Impl "Action" object for undo/redo history

TODO: Store undo/redo history for color editing, allow deleting
individual triangles and undo/redo of them.

.forgejo/workflows/unittests.yml

@@ -1,15 +0,0 @@
-name: Run UnitTests
-on:
-  push:
-    branches:
-      - '*'
-
-jobs:
-  build-and-run-tests:
-    runs-on: any_archLinux
-    steps:
-      - run: git clone --depth=1 --no-single-branch https://git.seodisparate.com/stephenseo/Triangles.git Tri
-      - run: cd Tri && git checkout $GITHUB_REF_NAME
-      - run: cd Tri && git submodule update --init --recursive
-      - run: cd Tri && cmake -S . -B buildDebug -DCMAKE_BUILD_TYPE=Debug
-      - run: make -C Tri/buildDebug UnitTest_Triangles && ./Tri/buildDebug/UnitTest_Triangles

.github/workflows/unittests.yml

@@ -1,24 +0,0 @@
-name: Run UnitTests
-on:
-  push:
-    branches:
-      - '*'
-
-jobs:
-  build-and-run-tests:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Install dependencies
-        run: sudo /usr/bin/env DEBIAN_FRONTEND=noninteractive apt-get install cmake git patch libasound2-dev libx11-dev libxrandr-dev libxi-dev libgl1-mesa-dev libglu1-mesa-dev libxcursor-dev libxinerama-dev
-      - name: Fetch Raylib sources
-        run: git clone https://github.com/raysan5/raylib raylib && cd raylib && git checkout 5.0
-      - name: Patch Raylib version (version 5.0 in cmake)
-        run: cd raylib && git show 032cc497ca5aaca862dc926a93c2a45ed8017737 | patch -p1
-      - name: Build Raylib
-        run: cd raylib && cmake -B buildRelease -S . -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=On -DCMAKE_INSTALL_PREFIX=/usr/local && make -C buildRelease
-      - name: Install Raylib
-        run: cd raylib/buildRelease && sudo make install
-      - name: Fetch Triangles
-        run: git clone --depth=1 --no-single-branch https://github.com/Stephen-Seo/Triangles Tri && cd Tri && git checkout $GITHUB_REF_NAME && git submodule update --init --recursive
-      - name: Build and Run UnitTests
-        run: cd Tri && cmake -B buildDebug -S . -DCMAKE_BUILD_TYPE=Debug && make -C buildDebug UnitTest_Triangles && ./buildDebug/UnitTest_Triangles

.gitignore

@@ -1,4 +1,3 @@
 build*/
 compile_commands.json
 .clangd/
-.cache/

.gitmodules

@@ -1,6 +1,6 @@
-[submodule "third_party/raygui"]
-	path = third_party/raygui
-	url = https://github.com/raysan5/raygui.git
-[submodule "third_party/glm"]
-	path = third_party/glm
-	url = https://github.com/g-truc/glm.git
+[submodule "third_party/imgui"]
+	path = third_party/imgui
+	url = https://github.com/ocornut/imgui.git
+[submodule "third_party/imgui-sfml"]
+	path = third_party/imgui-sfml
+	url = https://github.com/eliasdaler/imgui-sfml.git

CMakeLists.txt

@@ -1,14 +1,14 @@
-cmake_minimum_required(VERSION 3.8.2)
+cmake_minimum_required(VERSION 3.0)
 project(Triangles LANGUAGES CXX VERSION 1.0)
 
-if(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/third_party/glm/glm/glm.hpp)
-    message(FATAL_ERROR "third_party/glm/glm/glm.hpp is missing!\n \
-Please update the glm submodule by running 'git submodule init' and \
+if(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/third_party/imgui/imgui.h)
+    message(FATAL_ERROR "third_party/imgui/imgui.h is missing!\n \
+Please update the GameDevTools submodule by running 'git submodule init' and \
 'git submodule update'!")
 endif()
-if(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/third_party/raygui/src/raygui.h)
-    message(FATAL_ERROR "third_party/raygui/src/raygui.h is missing!\n \
-Please update the raygui submodule by running 'git submodule init' and \
+if(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/third_party/imgui-sfml/imgui-SFML.h)
+    message(FATAL_ERROR "third_party/imgui-sfml/imgui-SFML.h is missing!\n \
+Please update the GameDevTools submodule by running 'git submodule init' and \
 'git submodule update'!")
 endif()
 
@@ -16,18 +16,34 @@ if(NOT DEFINED CMAKE_BUILD_TYPE)
     set(CMAKE_BUILD_TYPE "Debug")
 endif()
 
+if(CMAKE_BUILD_TYPE MATCHES "Debug")
+    set(ImGuiDemo "third_party/imgui/imgui_demo.cpp")
+else()
+    set(ImGuiDemo "")
+endif()
+
 set(Triangles_MAIN_SOURCES
     src/main.cpp
 )
 
 set(Triangles_LIB_SOURCES
     src/state.cpp
-    src/shape.cpp
-    src/triangle.cpp
-    src/circle.cpp
-    src/raygui.cpp
+    third_party/imgui/imgui.cpp
+    third_party/imgui/imgui_draw.cpp
+    third_party/imgui/imgui_widgets.cpp
+    third_party/imgui-sfml/imgui-SFML.cpp
 )
 
+if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
+	set(CMAKE_CXX_FLAGS_DEBUG "/Od /Zi")
+	set(CMAKE_CXX_FLAGS_RELEASE "/O2 /DNDEBUG")
+else()
+    set(CMAKE_CXX_FLAGS "-Wall -Wextra -Wpedantic -Wsuggest-override")
+    set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g")
+    set(CMAKE_CXX_FLAGS_RELEASE "-O3 -D NDEBUG")
+endif()
+
 add_library(TrianglesLib STATIC ${Triangles_LIB_SOURCES})
 
 if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
@@ -36,51 +52,54 @@ else()
     add_executable(Triangles ${Triangles_MAIN_SOURCES})
 endif()
 
-target_compile_options(TrianglesLib PRIVATE
-    -Wall -Wextra -Wpedantic
-    -Wsuggest-override
-    $<$<COMPILE_LANGUAGE:CXX>:-Weffc++>
-    $<$<CONFIG:DEBUG>:-Og>
-)
-target_compile_options(Triangles PRIVATE
-    -Wall -Wextra -Wpedantic
-    -Wsuggest-override
-    $<$<COMPILE_LANGUAGE:CXX>:-Weffc++>
-    $<$<CONFIG:DEBUG>:-Og>
-)
-
 target_link_libraries(Triangles PUBLIC TrianglesLib)
 
 target_compile_features(TrianglesLib PUBLIC cxx_std_17)
 
 if(BUILD_SHARED_LIBS OR (UNIX AND NOT CYGWIN) OR (CMAKE_CXX_COMPILER_ID MATCHES "MSVC"))
-    find_package(raylib 5.0 REQUIRED)
+    find_package(SFML 2 REQUIRED
+        COMPONENTS audio network graphics window system)
 else()
-    find_package(raylib 5.0 REQUIRED)
+    find_package(SFML 2 REQUIRED
+        COMPONENTS audio-s network-s graphics-s window-s system-s)
+    add_definitions(-DSFML_STATIC)
 endif()
 
 if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
 target_link_libraries(TrianglesLib PUBLIC
-    raylib
+    sfml-graphics sfml-window sfml-system
     opengl32
 )
 else()
 target_link_libraries(TrianglesLib PUBLIC
-    raylib
+    sfml-graphics sfml-window sfml-system
     GL
 )
 endif()
 
-target_include_directories(TrianglesLib PUBLIC
+if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
+    target_include_directories(TrianglesLib PUBLIC
         ${CMAKE_CURRENT_SOURCE_DIR}/src
-    ${CMAKE_CURRENT_SOURCE_DIR}/third_party/raygui/src
-    ${CMAKE_CURRENT_SOURCE_DIR}/third_party/glm
-)
+        ${SFML_INCLUDE_DIR}
+        ${CMAKE_CURRENT_SOURCE_DIR}/third_party/imgui # imgui related headers
+        ${CMAKE_CURRENT_SOURCE_DIR}/third_party/imgui-sfml # imgui-sfml related headers
+    )
+else()
+    target_include_directories(TrianglesLib PUBLIC
+        ${CMAKE_CURRENT_SOURCE_DIR}/src
+        ${SFML_INCLUDE_DIR}
+        ${CMAKE_CURRENT_SOURCE_DIR}/build_include # imgui related headers
+    )
+endif()
+
+# Use macro to override imgui config header
+target_compile_definitions(TrianglesLib PUBLIC
+    "IMGUI_USER_CONFIG=\"${CMAKE_CURRENT_SOURCE_DIR}/third_party/imgui-sfml/imconfig-SFML.h\"")
 
 if(CMAKE_BUILD_TYPE MATCHES "Debug")
     set(Triangles_UNIT_TEST_SOURCES
+        src/unittest/test_main.cpp
         src/unittest/test_helpers.cpp
-        third_party/catch/catch_amalgamated.cpp
     )
 
     add_executable(UnitTest_Triangles ${Triangles_UNIT_TEST_SOURCES})

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2020-2021,2023-2024 Stephen Seo
+Copyright (c) 2020 Stephen Seo
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -5,7 +5,7 @@ THIS PROJECT IS STILL A WORK IN PROGRESS!
 A gui application that lets you draw triangles of different colors on a colored
 background.
 
-Uses [raygui](https://github.com/raysan5/raygui) for UI.
+Uses [imgui](https://github.com/ocornut/imgui) for UI.
 
 # Compiling
 
@@ -18,19 +18,19 @@ Create a build dir, run cmake, and then make to build.
 
 ## Dependencies
 
-Raylib should be installed on the system. Other third-party dependencies are git
-submodules and should be initialized with `git submodule update --init recursive`.
+SFML should be installed on the system. imgui, and imgui-sfml are git submodules
+and should be initialized with `git submodule update --init --recursive`.
 
 # Legal stuff
 
-Uses [raylib](https://github.com/raysan5/raylib), which is licensed under the
-[zlib license](https://choosealicense.com/licenses/zlib).
+Uses [SFML](https://github.com/SFML/SFML), which is licensed under the
+[SFML license](https://github.com/SFML/SFML/blob/master/license.md).
 
-Uses [raygui](https://github.com/raysan5/raylib), which is licensed under the
-[zlib license](https://choosealicense.com/licenses/zlib).
+Uses [imgui](https://github.com/ocornut/imgui), which is licensed under the
+[MIT](https://choosealicense.com/licenses/mit/) license.
 
-Uses [glm](https://github.com/g-truc/glm), which is licensed under the [Happy
-Bunny License or the MIT License](https://github.com/g-truc/glm/blob/master/copying.txt).
+Uses [imgui-sfml](https://github.com/eliasdaler/imgui-sfml), which is licensed
+under the [MIT](https://choosealicense.com/licenses/mit/) license.
 
 Uses [catch](https://github.com/catchorg/Catch2), which is licensed under the
 [Boost Software](https://choosealicense.com/licenses/bsl-1.0/) license.

build_include/imconfig.h

@@ -0,0 +1 @@
+../third_party/imgui-sfml/imconfig-SFML.h

build_include/imgui-SFML.h

@@ -0,0 +1 @@
+../third_party/imgui-sfml/imgui-SFML.h

build_include/imgui-SFML_export.h

@@ -0,0 +1 @@
+../third_party/imgui-sfml/imgui-SFML_export.h

build_include/imgui.h

@@ -0,0 +1 @@
+../third_party/imgui/imgui.h

build_include/imgui_internal.h

@@ -0,0 +1 @@
+../third_party/imgui/imgui_internal.h

build_include/imstb_rectpack.h

@@ -0,0 +1 @@
+../third_party/imgui/imstb_rectpack.h

build_include/imstb_textedit.h

@@ -0,0 +1 @@
+../third_party/imgui/imstb_textedit.h

build_include/imstb_truetype.h

@@ -0,0 +1 @@
+../third_party/imgui/imstb_truetype.h

src/circle.cpp

@@ -1,60 +0,0 @@
-#include "circle.hpp"
-
-#include <cmath>
-
-Tri::Circle::Circle() :
-Shape(),
-position{0.0f, 0.0f},
-radius(4.0f)
-{}
-
-Tri::Circle::Circle(glm::vec2 pos) :
-Shape(),
-position(pos),
-radius(4.0f)
-{}
-
-Tri::Circle::Circle(glm::vec2 pos, float radius) :
-Shape(),
-position(pos),
-radius(radius)
-{}
-
-Tri::Circle::Circle(glm::vec2 pos, float radius, Color fillColor) :
-Shape(fillColor),
-position(pos),
-radius(radius)
-{}
-
-Tri::Circle::Circle(glm::vec2 pos, float radius, Color fillColor, Color outlineColor) :
-Shape(fillColor, outlineColor),
-position(pos),
-radius(radius)
-{}
-
-Tri::Shape& Tri::Circle::draw() {
-    glm::vec2 transformed = transform * glm::vec3(position.x, position.y, 1.0f);
-    transformed.x = std::roundf(transformed.x);
-    transformed.y = std::roundf(transformed.y);
-    DrawCircle(transformed.x, transformed.y, radius, fillColor);
-    DrawCircleLines(transformed.x, transformed.y, radius, outlineColor);
-    return *this;
-}
-
-void Tri::Circle::getVertices(std::vector<glm::vec2> &verticesOut) const {
-    verticesOut.clear();
-    verticesOut.push_back(position);
-}
-
-void Tri::Circle::getTransformedVertices(std::vector<glm::vec2> &verticesOut) const {
-    verticesOut.clear();
-    verticesOut.push_back(transform * glm::vec3{position.x, position.y, 1.0f});
-}
-
-float Tri::Circle::getRadius() const {
-    return radius;
-}
-
-void Tri::Circle::setRadius(float radius) {
-    this->radius = radius;
-}

src/circle.hpp

@@ -1,29 +0,0 @@
-#ifndef TRIANGLES_CIRCLE_HPP
-#define TRIANGLES_CIRCLE_HPP
-
-#include "shape.hpp"
-
-namespace Tri {
-
-struct Circle : public Shape {
-    Circle();
-    Circle(glm::vec2 pos);
-    Circle(glm::vec2 pos, float radius);
-    Circle(glm::vec2 pos, float radius, Color fillColor);
-    Circle(glm::vec2 pos, float radius, Color fillColor, Color outlineColor);
-
-    glm::vec2 position;
-    float radius;
-
-    virtual Shape& draw() override;
-
-    virtual void getVertices(std::vector<glm::vec2> &verticesOut) const override;
-    virtual void getTransformedVertices(std::vector<glm::vec2> &verticesOut) const override;
-
-    virtual float getRadius() const override;
-    virtual void setRadius(float radius) override;
-}; // struct Circle
-
-} // namespace Tri
-
-#endif

src/helpers.hpp

@@ -3,24 +3,14 @@
 
 #include <cmath>
 #include <optional>
-#include <cassert>
 
-#include <raylib.h>
-#include <raygui.h>
+#include <imgui.h>
 
-#include "shape.hpp"
 #include "state.hpp"
 
 #define SHOW_HELP_WIDTH (state->get_width() / 2.0f)
 #define SHOW_HELP_HEIGHT (state->get_height() / 2.0f)
 
-#define DEFAULT_WIDTH 800
-#define DEFAULT_HEIGHT 600
-#define CHANGE_SIZE_MIN_X 800
-#define CHANGE_SIZE_MAX_X 1920
-#define CHANGE_SIZE_MIN_Y 600
-#define CHANGE_SIZE_MAX_Y 1080
-
 #ifndef NDEBUG
 # include <cstdio>
 #endif
@@ -30,194 +20,126 @@ namespace Tri {
     // so this should be called during update, not draw
     inline void draw_help(Tri::State *state) {
         if(state->get_flags().test(Tri::State::F_DISPLAY_HELP)) {
-            GuiSetAlpha(1.0f);
-            if(!GuiWindowBox({10.0f,
-                             10.0f,
-                             800.0f - 20.0f,
-                             600.0f - 20.0f},
-                             "Help")) {
-                GuiLabel(
-                    {14.0f, 38.0f, 800.0f - 28.0f, 16.0f},
-                    "This is the help window - Press \"H\" to toggle this window");
-                GuiLabel(
-                    {14.0f, 56.0f, 800.0f - 28.0f, 16.0f},
-                    "Click anywhere to create triangles, one point at a time");
-                GuiLabel(
-                    {14.0f, 74.0f, 800.0f - 28.0f, 16.0f},
-                    "You cannot draw when a window is open");
-                GuiLabel(
-                    {14.0f, 92.0f, 800.0f - 28.0f, 16.0f},
-                    "Press \"U\" to undo. Clicking will remove all future undo history");
-                GuiLabel(
-                    {14.0f, 110.0f, 800.0f - 28.0f, 16.0f},
-                    "Press \"R\" to redo.");
-                GuiLabel(
-                    {14.0f, 128.0f, 800.0f - 28.0f, 16.0f},
-                    "Press \"C\" to change colors");
-                GuiLabel(
-                    {14.0f, 146.0f, 800.0f - 28.0f, 16.0f},
-                    "Press \"B\" to change background color");
-                GuiLabel(
-                    {14.0f, 164.0f, 800.0f - 28.0f, 16.0f},
-                    "Press \"P\" to set current color to a color on screen");
-                GuiLabel(
-                    {14.0f, 182.0f, 800.0f - 28.0f, 16.0f},
-                    "Press \"S\" to save what was drawn as a png image");
-                GuiLabel(
-                    {14.0f, 200.0f, 800.0f - 28.0f, 16.0f},
-                    "Press \"I\" to resize the canvas");
-                GuiLabel(
-                    {14.0f, 218.0f, 800.0f - 28.0f, 16.0f},
-                    "Press \"E\" to edit the selected tri");
-                if(GuiButton({14.0f, 238.0f, 100.0f, 16.0f}, "Close")) {
-                    state->close_help();
-                }
-            } else {
+            ImGui::SetNextWindowPos(sf::Vector2f(10.0f, 10.0f));
+            ImGui::SetNextWindowSize(sf::Vector2f(
+                state->get_width() - 20.0f,
+                state->get_height() - 20.0f));
+            ImGui::SetNextWindowBgAlpha(0.7f);
+            ImGui::Begin("Help Window", nullptr, ImGuiWindowFlags_NoDecoration | ImGuiWindowFlags_NoSavedSettings);
+            ImGui::Text("This is the help window - Press \"H\" to toggle this window");
+            ImGui::Text("Click anywhere to create triangles, one point at a time");
+            ImGui::Text("You cannot draw when a window is open");
+            ImGui::Text("Press \"U\" to undo. Clicking will remove all future undo history");
+            ImGui::Text("Press \"R\" to redo.");
+            ImGui::Text("Press \"C\" to change colors");
+            ImGui::Text("Press \"B\" to change background color");
+            ImGui::Text("Press \"P\" to set current color to a color on screen");
+            ImGui::Text("Press \"S\" to save what was drawn as a png image");
+            if(ImGui::Button("Close")) {
                 state->close_help();
             }
+            ImGui::End();
         }
     }
 
     inline void draw_notification(Tri::State *state) {
         float alpha = state->get_notification_alpha();
         if(alpha > 0.0f) {
-            GuiSetAlpha(alpha);
-            GuiPanel({(800 - SHOW_HELP_WIDTH) / 2.0f,
-                      (600 - SHOW_HELP_HEIGHT) / 2.0f,
+            ImGui::PushStyleVar(ImGuiStyleVar_Alpha, alpha);
+
+            ImGui::SetNextWindowPos(sf::Vector2f(
+                (state->get_width() - SHOW_HELP_WIDTH) / 2.0f,
+                (state->get_height() - SHOW_HELP_HEIGHT) / 2.0f));
+            ImGui::SetNextWindowSize(sf::Vector2f(
                 SHOW_HELP_WIDTH,
-                      SHOW_HELP_HEIGHT}, nullptr);
-            GuiLabel({4.0f + (800 - SHOW_HELP_WIDTH) / 2.0f,
-                      4.0f + (600 - SHOW_HELP_HEIGHT) / 2.0f,
-                      SHOW_HELP_WIDTH - 8.0f,
-                      SHOW_HELP_HEIGHT - 8.0f},
-                     state->get_notification_text());
+                SHOW_HELP_HEIGHT));
+            ImGui::Begin(
+                "Notification Window",
+                nullptr,
+                ImGuiWindowFlags_NoDecoration | ImGuiWindowFlags_NoSavedSettings);
+            ImGui::SetWindowFontScale(3.0f);
+            ImGui::Text("%s", state->get_notification_text());
+            ImGui::End();
+
+            ImGui::PopStyleVar();
         }
     }
 
     inline void draw_color_picker(Tri::State *state) {
         if(state->get_flags().test(Tri::State::F_DISPLAY_COLOR_P)) {
-            GuiSetAlpha(1.0f);
-            if(!GuiWindowBox({4.0f, 4.0f, 242.0f, 328.0f}, "Tri Color Picker")) {
-                auto &color = state->get_color();
-                GuiColorPicker(
-                    {8.0f, 32.0f, 206.0f, 240.0f},
-                    nullptr,
-                    &color);
-                float alpha = ((float)color.a) / 255.0F;
-                GuiColorBarAlpha(
-                    {8.0F, 280.0F, 206.0F, 20.0F},
-                    nullptr,
-                    &alpha
-                );
-                color.a = alpha * 255.0F;
-                if(GuiButton({8.0f, 308.0f, 234.0f, 16.0f}, "Close")) {
-                    state->close_color_picker();
-                }
-            } else {
+            ImGui::Begin("Tri Color Picker");
+            ImGui::ColorPicker4("Tri Color", state->get_color());
+            if(ImGui::Button("Close")) {
                 state->close_color_picker();
             }
+            ImGui::End();
         }
     }
 
     inline void draw_bg_color_picker(Tri::State *state) {
         if(state->get_flags().test(Tri::State::F_DISPLAY_BG_COLOR_P)) {
-            GuiSetAlpha(1.0f);
-            if(!GuiWindowBox({250.0f, 4.0f, 242.0f, 292.0f}, "BG Color Picker")) {
-                auto &colorArray = state->get_bg_color();
-                GuiColorPicker(
-                    {254.0f, 32.0f, 206.0f, 240.0f},
-                    nullptr,
-                    &colorArray);
-                if(GuiButton({254.0f, 274.0f, 234.0f, 16.0f}, "Close")) {
-                    state->close_bg_color_picker();
-                }
-            } else {
+            ImGui::Begin("BG Color Picker");
+            ImGui::ColorPicker3("BG Color", state->get_bg_color());
+            if(ImGui::Button("Close")) {
                 state->close_bg_color_picker();
             }
+            ImGui::End();
         }
     }
 
     inline void draw_save(Tri::State *state) {
         if(state->get_flags().test(Tri::State::F_DISPLAY_SAVE)) {
             auto *filenameBuffer = state->get_save_filename_buffer();
-            GuiSetAlpha(1.0f);
-            if(!GuiWindowBox({4.0f, 300.0f, 292.0f, 292.0f}, "Save")) {
-                GuiTextBox(
-                    {8.0f, 328.0f, 284.0f, 20.0f},
-                    filenameBuffer->data(),
-                    filenameBuffer->size() - 1,
-                    true);
-                if(GuiButton({8.0f, 352.0f, 50.0f, 16.0f}, "Save")) {
+            ImGui::Begin("Save");
+            ImGui::InputText("Filename", filenameBuffer->data(), filenameBuffer->size() - 1);
+            if(ImGui::Button("Save")) {
                 if(state->do_save()) {
                     state->close_save();
                 }
-                }
-                const std::string &string = state->failed_message();
-                if(!string.empty()) {
-                    GuiLabel({8.0f, 372.0f, 284.0f, 16.0f}, string.c_str());
-                }
-            } else {
+            } else if(ImGui::Button("Cancel")) {
                 state->close_save();
             }
+            auto string_view = state->failed_message();
+            if(!string_view.empty()) {
+                ImGui::TextUnformatted(string_view.data(), string_view.data() + string_view.size());
+            }
+            ImGui::End();
         }
     }
 
     inline void draw_change_size(Tri::State *state) {
         if(state->get_flags().test(Tri::State::F_DISPLAY_CHANGE_SIZE)) {
-            GuiSetAlpha(1.0f);
-            if(!GuiWindowBox({300.0f, 300.0f, 292.0f, 292.0f}, "Change Size")) {
-                GuiValueBox(
-                        {384.0f, 328.0f, 80.0f, 16.0f},
-                        "Width",
-                        state->get_input_width(),
-                        CHANGE_SIZE_MIN_X,
-                        CHANGE_SIZE_MAX_X,
-                        !state->get_flags().test(State::F_TAB_TOGGLE));
-                GuiValueBox(
-                        {384.0f, 348.0f, 80.0f, 16.0f},
-                        "Height",
-                        state->get_input_height(),
-                        CHANGE_SIZE_MIN_Y,
-                        CHANGE_SIZE_MAX_Y,
-                        state->get_flags().test(State::F_TAB_TOGGLE));
-                const std::string &failMessage = state->failed_message();
-                if(!failMessage.empty()) {
-                    GuiLabel({304.0f, 368.0f, 284.0f, 16.0f}, failMessage.c_str());
+            ImGui::Begin("ChangeSize");
+            ImGui::InputInt2("Width and Height", state->get_input_width_height());
+            auto string_view = state->failed_message();
+            if(!string_view.empty()) {
+                ImGui::TextUnformatted(string_view.data(), string_view.data() + string_view.size());
             }
-                if(GuiButton({304.0f, 394.0f, 70.0f, 16.0f}, "Cancel")) {
+            if(ImGui::Button("Cancel")) {
                 state->close_input_width_height_window();
             }
-                if(GuiButton({378.0f, 394.0f, 50.0f, 16.0f}, "Set")) {
+            if(ImGui::Button("Set")) {
                 if(state->change_width_height()) {
                     state->close_input_width_height_window();
                 }
             }
-            } else {
-                state->close_input_width_height_window();
-            }
+            ImGui::End();
         }
     }
 
     inline bool is_within_shape(
-            const Tri::Shape &shape,
-            glm::vec2 xy) {
-        float radius = shape.getRadius();
-        std::vector<glm::vec2> vertices;
-        shape.getTransformedVertices(vertices);
-        if(radius > 0.0f) {
-            assert(vertices.size() == 1);
-
-            xy = xy - vertices[0];
-            return std::sqrt(xy.x * xy.x + xy.y * xy.y) <= radius;
-        } else {
-            assert(vertices.size() > 2);
-
+            const sf::ConvexShape &shape,
+            sf::Vector2f xy) {
         std::optional<bool> is_right;
-            for(unsigned int i = 0; i < vertices.size(); ++i) {
-                glm::vec2 t_a, t_b;
-                t_b = vertices[(i + 1) % vertices.size()] - vertices[i];
-                t_a = xy - vertices[i];
+        sf::Transform t = shape.getTransform();
+        for(unsigned int i = 0; i < shape.getPointCount(); ++i) {
+            sf::Vector2f t_a = t.transformPoint(shape.getPoint(i));
+            sf::Vector2f t_b = t.transformPoint(shape.getPoint((i + 1) % shape.getPointCount()));
 
+            t_b = t_b - t_a;
+            t_a = xy - t_a;
+
+            // TODO
             // cross product, where z coordinate is 0
             // Use sign of z value to determine if line is to right or left
             //
@@ -242,53 +164,19 @@ namespace Tri {
         }
         return true;
     }
-    }
 
-    inline Color invert_color(const Color &other) {
-        return Color{
-            (unsigned char)(255 - (int)other.r),
-            (unsigned char)(255 - (int)other.g),
-            (unsigned char)(255 - (int)other.b),
-            other.a};
+    inline sf::Color invert_color(const sf::Color &other) {
+        return sf::Color(255 - other.r, 255 - other.g, 255 - other.b);
     }
 
     inline void draw_edit_tri(Tri::State *state) {
         if(state->get_flags().test(Tri::State::F_TRI_EDIT_MODE)) {
-            GuiSetAlpha(1.0f);
-            if(!GuiWindowBox({500.0f, 4.0f, 242.0f, 328.0f}, "Edit Tri Color Picker")) {
-                auto &color = state->get_selected_tri_color();
-                GuiColorPicker(
-                    {504.0f, 32.0f, 206.0f, 240.0f},
-                    nullptr,
-                    &color);
-                float alpha = ((float)color.a) / 255.0F;
-                GuiColorBarAlpha(
-                    {504.0F, 280.0F, 206.0F, 20.0F},
-                    nullptr,
-                    &alpha
-                );
-                color.a = alpha * 255.0F;
-                if(GuiButton({504.0f, 308.0f, 234.0f, 16.0f}, "Close")) {
+            ImGui::Begin("Edit Tri Color Picker");
+            ImGui::ColorPicker4("Tri Color", state->get_selected_tri_color());
+            if(ImGui::Button("Close")) {
                 state->close_selected_tri_mode();
             }
-            } else {
-                state->close_selected_tri_mode();
-            }
-        }
-    }
-
-    inline void make_counter_clockwise(std::array<glm::vec2, 3> &tri) {
-        // 2D cross product to get the sign to determine if clockwise
-        glm::vec2 t_a, t_b;
-        t_b = tri[1] - tri[0];
-        t_a = tri[2] - tri[0];
-
-        float z = t_b.x * t_a.y - t_b.y * t_a.x;
-        if(z >= 0.0f) {
-            // is clockwise, swap first with last
-            t_a = tri[0];
-            tri[0] = tri[2];
-            tri[2] = t_a;
+            ImGui::End();
         }
     }
 }

src/main.cpp

@@ -1,3 +1,10 @@
+#include <SFML/System.hpp>
+#include <SFML/Window.hpp>
+#include <SFML/Graphics.hpp>
+
+#include <imgui.h>
+#include <imgui-SFML.h>
+
 #include "state.hpp"
 
 #ifdef _MSC_VER

src/raygui.cpp

@@ -1,14 +0,0 @@
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wall"
-#pragma GCC diagnostic ignored "-Wextra"
-#pragma GCC diagnostic ignored "-Wpedantic"
-#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
-#pragma GCC diagnostic ignored "-Wenum-compare"
-#pragma GCC diagnostic ignored "-Wunused-parameter"
-#pragma GCC diagnostic ignored "-Wunused-variable"
-#pragma GCC diagnostic ignored "-Weffc++"
-
-#define RAYGUI_IMPLEMENTATION
-#include <raygui.h>
-
-#pragma GCC diagnostic pop

src/shape.cpp

@@ -1,46 +0,0 @@
-#include "shape.hpp"
-
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Weffc++"
-#include <glm/ext/matrix_transform.hpp>
-#define GLM_ENABLE_EXPERIMENTAL
-#include <glm/gtx/matrix_transform_2d.hpp>
-#pragma GCC diagnostic pop
-
-Tri::Shape::Shape() :
-transform(glm::identity<glm::mat3>()),
-fillColor(RAYWHITE),
-outlineColor(BLACK)
-{}
-
-Tri::Shape::Shape(Color fillColor) :
-transform(glm::identity<glm::mat3>()),
-fillColor(fillColor),
-outlineColor(BLACK)
-{}
-
-Tri::Shape::Shape(Color fillColor, Color outlineColor) :
-transform(glm::identity<glm::mat3>()),
-fillColor(fillColor),
-outlineColor(outlineColor)
-{}
-
-Tri::Shape& Tri::Shape::resetTransform() {
-    transform = glm::identity<glm::mat3>();
-    return *this;
-}
-
-Tri::Shape& Tri::Shape::translate(const glm::vec2 move) {
-    transform = glm::translate(transform, move);
-    return *this;
-}
-
-Tri::Shape& Tri::Shape::rotate(const float angle) {
-    transform = glm::rotate(transform, angle);
-    return *this;
-}
-
-Tri::Shape& Tri::Shape::scale(const glm::vec2 scale) {
-    transform = glm::scale(transform, scale);
-    return *this;
-}

src/shape.hpp

@@ -1,40 +0,0 @@
-#ifndef TRIANGLES_SHAPE_HPP
-#define TRIANGLES_SHAPE_HPP
-
-#include <vector>
-
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Weffc++"
-#include <raylib.h>
-#include <glm/glm.hpp>
-#pragma GCC diagnostic pop
-
-namespace Tri {
-
-struct Shape {
-    Shape();
-    Shape(Color fillColor);
-    Shape(Color fillColor, Color outlineColor);
-    virtual ~Shape() {}
-
-    glm::mat3 transform;
-    Color fillColor;
-    Color outlineColor;
-
-    Shape& resetTransform();
-    Shape& translate(const glm::vec2 move);
-    Shape& rotate(const float angle);
-    Shape& scale(const glm::vec2 scale);
-
-    virtual Shape& draw() = 0;
-
-    virtual void getVertices(std::vector<glm::vec2> &verticesOut) const = 0;
-    virtual void getTransformedVertices(std::vector<glm::vec2> &verticesOut) const = 0;
-
-    virtual float getRadius() const = 0;
-    virtual void setRadius(float radius) = 0;
-}; // struct Shape
-
-} // namespace Tri
-
-#endif

src/state.cpp

@@ -4,80 +4,76 @@
 #include <cassert>
 #include <string>
 #include <cmath>
-#include <cstdio>
 
-#include <raylib.h>
+#include <imgui-SFML.h>
 
 #include "helpers.hpp"
 
 #define STARTING_HELP_FADE_RATE 0.2f
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-parameter"
-Tri::State::State(int argc, char **argv) :
-flags(),
-width(DEFAULT_WIDTH),
-height(DEFAULT_HEIGHT),
-dt(1.0f/60.0f),
-notificationAlpha(1.0f),
-notificationText(),
-tris(),
-currentTri(),
+#ifndef NDEBUG
+# include <cstdio>
+#endif
+
+Tri::State::State(int /*argc*/, char ** /*argv*/) :
+width(800),
+height(600),
+dt(sf::microseconds(16666)),
+notification_alpha(1.0f),
+window(sf::VideoMode(800, 600), "Triangles", sf::Style::Titlebar | sf::Style::Close),
 currentTri_state(CurrentState::NONE),
-pointCircle({7.0F, 7.0F}, 7.0F, WHITE),
-colorPickerColor{255, 255, 255, 255},
-bgColorPickerColor{0, 0, 0, 255},
-bgColor(BLACK),
-saveFilenameBuffer(),
-failedMessage(),
-drawCache(),
+colorPickerColor{1.0f, 1.0f, 1.0f, 1.0f},
+bgColorPickerColor{0.0f, 0.0f, 0.0f},
+bgColor(sf::Color::Black),
+inputWidthHeight{800, 600},
 pi(std::acos(-1.0f)),
-selectedTri(),
-selectedTriColor{255, 255, 255, 255},
-selectedTriBlinkTimer(),
-inputWidth(800),
-inputHeight(600),
-history(),
 history_idx(0)
 {
-    InitWindow(width, height, "Triangles");
-    SetTargetFPS(60);
-
     flags.set(F_IS_RUNNING); // is running
+    ImGui::SFML::Init(window);
+    window.setFramerateLimit(60);
 
     set_notification_text("Press \"H\" for help");
 
+    pointCircle.setRadius(7.0f);
+    pointCircle.setOrigin(7.0f, 7.0f);
+    pointCircle.setFillColor(sf::Color::White);
+    pointCircle.setOutlineColor(sf::Color::Black);
+    pointCircle.setOutlineThickness(1.0f);
+
     saveFilenameBuffer.fill(0);
 
-    drawCache = LoadRenderTexture(width, height);
+    if(!drawCache.create(800, 600)) {
+#ifndef NDEBUG
+        puts("ERROR: Failed to initialize RenderTexture (draw cache)");
+#endif
+        flags.reset(F_DRAW_CACHE_INITIALIZED);
+    } else {
         flags.set(F_DRAW_CACHE_INITIALIZED);
         flags.set(F_DRAW_CACHE_DIRTY);
-
-    GuiSetStyle(DEFAULT, BACKGROUND_COLOR, 0x303030);
+        drawCacheSprite.setTexture(drawCache.getTexture(), true);
+    }
 }
-#pragma GCC diagnostic pop
 
 Tri::State::Action::Action() :
 type(Tri::State::Action::AT_NONE),
 idx(0),
-color(BLACK),
+color(sf::Color::Black),
 data{{0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f}}
 {}
 
-Tri::State::Action::Action(const Type& type, IndexT idx, const Color& color, float *data) :
+Tri::State::Action::Action(const Type& type, IndexT idx, const sf::Color& color, float *data) :
 type(type),
 idx(idx),
-color(color),
-data()
+color(color)
 {
     init(data);
 }
 
-Tri::State::Action::Action(Type&& type, IndexT idx, Color&& color, float *data) :
+Tri::State::Action::Action(Type&& type, IndexT idx, sf::Color&& color, float *data) :
 type(type),
 idx(idx),
-color(color),
-data()
+color(color)
 {
     init(data);
 }
@@ -97,32 +93,31 @@ void Tri::State::Action::init(float *data) {
     default:
         type = AT_NONE;
         idx = 0;
-        color = BLACK;
+        color = sf::Color::Black;
         this->data = {{0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f}};
         break;
     }
 }
 
 Tri::State::~State() {
-    UnloadRenderTexture(drawCache);
-    CloseWindow();
+    window.close();
+    ImGui::SFML::Shutdown();
 }
 
 void Tri::State::handle_events() {
-    if(WindowShouldClose()) {
+    while(window.pollEvent(event)) {
+        ImGui::SFML::ProcessEvent(event);
+        if(event.type == sf::Event::Closed) {
+            window.close();
             flags.reset(F_IS_RUNNING);
-    }
-
-    int keyPressed = GetKeyPressed();
-    while(keyPressed > 0) {
+        } else if(event.type == sf::Event::KeyPressed) {
             if(!flags.test(F_DISPLAY_SAVE)) {
-            switch(keyPressed) {
-            case KEY_H:
+                // TODO use a switch statement
+                if(event.key.code == sf::Keyboard::H) {
                     flags.flip(F_DISPLAY_HELP);
-                break;
-            case KEY_U:
+                } else if(event.key.code == sf::Keyboard::U) {
                     flags.set(F_DRAW_CACHE_DIRTY);
-                if (history_idx > 0) {
+                    if(history_idx > 0) {
                         switch(history[history_idx-1].type) {
                         case Action::AT_TRI:
                             tris.erase(
@@ -132,19 +127,18 @@ void Tri::State::handle_events() {
                         case Action::AT_TRI_DEL:
                         {
                             tris.emplace(
-                            tris.cbegin() + history[history_idx].idx,
-                            Triangle(
-                                {{
-                                    {history[history_idx-1].data.tri[0],
-                                     history[history_idx-1].data.tri[1]},
-                                    {history[history_idx-1].data.tri[2],
-                                     history[history_idx-1].data.tri[3]},
-                                    {history[history_idx-1].data.tri[4],
-                                     history[history_idx-1].data.tri[5]},
-                                }},
-                                history[history_idx-1].color
-                            )
-                        );
+                                tris.cbegin() + history[history_idx-1].idx,
+                                sf::ConvexShape(3));
+                            tris[history[history_idx-1].idx].setPoint(0, sf::Vector2f(
+                                history[history_idx-1].data.tri[0],
+                                history[history_idx-1].data.tri[1]));
+                            tris[history[history_idx-1].idx].setPoint(1, sf::Vector2f(
+                                history[history_idx-1].data.tri[2],
+                                history[history_idx-1].data.tri[3]));
+                            tris[history[history_idx-1].idx].setPoint(2, sf::Vector2f(
+                                history[history_idx-1].data.tri[4],
+                                history[history_idx-1].data.tri[5]));
+                            tris[history[history_idx-1].idx].setFillColor(history[history_idx-1].color);
                             currentTri_state = CurrentState::NONE;
                             break;
                         }
@@ -161,8 +155,7 @@ void Tri::State::handle_events() {
                         }
                         --history_idx;
                     }
-                break;
-            case KEY_R:
+                } else if(event.key.code == sf::Keyboard::R) {
                     flags.set(F_DRAW_CACHE_DIRTY);
                     if(history_idx < history.size()) {
                         switch(history[history_idx].type) {
@@ -170,18 +163,17 @@ void Tri::State::handle_events() {
                         {
                             tris.emplace(
                                 tris.cbegin() + history[history_idx].idx,
-                            Triangle(
-                                {{
-                                    {history[history_idx].data.tri[0],
-                                     history[history_idx].data.tri[1]},
-                                    {history[history_idx].data.tri[2],
-                                     history[history_idx].data.tri[3]},
-                                    {history[history_idx].data.tri[4],
-                                     history[history_idx].data.tri[5]},
-                                }},
-                                history[history_idx].color
-                            )
-                        );
+                                sf::ConvexShape(3));
+                            tris[history[history_idx].idx].setPoint(0, sf::Vector2f(
+                                history[history_idx].data.tri[0],
+                                history[history_idx].data.tri[1]));
+                            tris[history[history_idx].idx].setPoint(1, sf::Vector2f(
+                                history[history_idx].data.tri[2],
+                                history[history_idx].data.tri[3]));
+                            tris[history[history_idx].idx].setPoint(2, sf::Vector2f(
+                                history[history_idx].data.tri[4],
+                                history[history_idx].data.tri[5]));
+                            tris[history[history_idx].idx].setFillColor(history[history_idx].color);
                             currentTri_state = CurrentState::NONE;
                             break;
                         }
@@ -200,7 +192,7 @@ void Tri::State::handle_events() {
                             currentTri[currentTri_state].y = history[history_idx].data.point[1];
                             currentTri_state = static_cast<CurrentState>(
                                 currentTri_state + 1);
-                        pointCircle.fillColor = history[history_idx].color;
+                            pointCircle.setFillColor(history[history_idx].color);
                             break;
                         default:
                             assert(!"Unreachable code");
@@ -208,25 +200,21 @@ void Tri::State::handle_events() {
                         }
                         ++history_idx;
                     }
-                break;
-            case KEY_C:
+                } else if(event.key.code == sf::Keyboard::C) {
                     if(flags.test(F_DISPLAY_COLOR_P)) {
                         close_color_picker();
                     } else {
                         flags.set(F_DISPLAY_COLOR_P);
                     }
-                break;
-            case KEY_B:
+                } else if(event.key.code == sf::Keyboard::B) {
                     if(flags.test(F_DISPLAY_BG_COLOR_P)) {
                         close_bg_color_picker();
                     } else {
                         flags.set(F_DISPLAY_BG_COLOR_P);
                     }
-                break;
-            case KEY_S:
+                } else if(event.key.code == sf::Keyboard::S) {
                     flags.flip(F_DISPLAY_SAVE);
-                break;
-            case KEY_P:
+                } else if(event.key.code == sf::Keyboard::P) {
                     flags.flip(F_COPY_COLOR_MODE);
                     if(flags.test(F_COPY_COLOR_MODE)) {
                         set_notification_text(
@@ -236,18 +224,15 @@ void Tri::State::handle_events() {
                             "to what was\n"
                             "clicked on");
                     } else {
-                    notificationAlpha = 0.0f;
+                        notification_alpha = 0.0f;
                     }
-                break;
-            case KEY_I:
+                } else if(event.key.code == sf::Keyboard::I) {
                     flags.flip(F_DISPLAY_CHANGE_SIZE);
                     if(!flags.test(F_DISPLAY_CHANGE_SIZE)) {
-                    close_input_width_height_window();
-                } else {
-                    failedMessage = "Press TAB to switch between width/height";
+                        inputWidthHeight[0] = width;
+                        inputWidthHeight[1] = height;
                     }
-                break;
-            case KEY_E:
+                } else if(event.key.code == sf::Keyboard::E) {
                     if(flags.test(F_TRI_EDIT_MODE)) {
                         close_selected_tri_mode();
                     } else {
@@ -256,48 +241,51 @@ void Tri::State::handle_events() {
                             set_notification_text("Click on a tri\nto edit it");
                         }
                     }
-                break;
-            case KEY_TAB:
-                flags.flip(F_TAB_TOGGLE);
-                break;
                 }
             }
-        keyPressed = GetKeyPressed();
-    }
-
-    if(IsMouseButtonPressed(MOUSE_LEFT_BUTTON)) {
+        } else if(event.type == sf::Event::MouseButtonPressed) {
             if(can_draw()) {
                 switch(currentTri_state) {
-            case CurrentState::NONE: {
-                currentTri[0] = {GetMouseX(), GetMouseY()};
+                case CurrentState::NONE:
+                {
+                    currentTri[0] = sf::Vector2f(event.mouseButton.x, event.mouseButton.y);
                     currentTri_state = CurrentState::FIRST;
+
                     if(history_idx < history.size()) {
                         history.resize(history_idx);
                     }
                     float points[2] = {currentTri[0].x, currentTri[0].y};
                     history.push_back(Action(Action::AT_POINT,
                                              0,
-                                         pointCircle.fillColor,
+                                             pointCircle.getFillColor(),
                                              points));
                     ++history_idx;
-                break; }
-            case CurrentState::FIRST: {
-                currentTri[1] = {GetMouseX(), GetMouseY()};
+                    break;
+                }
+                case CurrentState::FIRST:
+                {
+                    currentTri[1] = sf::Vector2f(event.mouseButton.x, event.mouseButton.y);
                     currentTri_state = CurrentState::SECOND;
+
                     if(history_idx < history.size()) {
                         history.resize(history_idx);
                     }
                     float points[2] = {currentTri[1].x, currentTri[1].y};
                     history.push_back(Action(Action::AT_POINT,
                                              1,
-                                         pointCircle.fillColor,
+                                             pointCircle.getFillColor(),
                                              points));
                     ++history_idx;
-                break; }
-            case CurrentState::SECOND: {
-                currentTri[2] = {GetMouseX(), GetMouseY()};
-                make_counter_clockwise(currentTri);
-                tris.emplace_back(currentTri, pointCircle.fillColor);
+                    break;
+                }
+                case CurrentState::SECOND:
+                {
+                    currentTri[2] = sf::Vector2f(event.mouseButton.x, event.mouseButton.y);
+                    tris.emplace_back(sf::ConvexShape(3));
+                    tris.back().setPoint(0, currentTri[0]);
+                    tris.back().setPoint(1, currentTri[1]);
+                    tris.back().setPoint(2, currentTri[2]);
+                    tris.back().setFillColor(pointCircle.getFillColor());
                     currentTri_state = CurrentState::NONE;
                     flags.set(F_DRAW_CACHE_DIRTY);
 
@@ -311,48 +299,37 @@ void Tri::State::handle_events() {
                     };
                     history.push_back(Action(Action::AT_TRI,
                                              tris.size()-1,
-                                         pointCircle.fillColor,
+                                             pointCircle.getFillColor(),
                                              points));
                     ++history_idx;
-                break; }
+                    break;
+                }
                 }
             } else if(flags.test(F_COPY_COLOR_MODE)) {
-            check_draw_cache();
-            Image drawImage = LoadImageFromTexture(drawCache.texture);
-            Color *colors = LoadImageColors(drawImage);
-            int mx = GetMouseX();
-            int my = GetMouseY();
-            if(mx < 0) { mx = 0; }
-            else if(mx >= drawImage.width) { mx = drawImage.width - 1; }
-            if(my < 0) { my = 0; }
-            else if(my >= drawImage.height) { my = drawImage.height - 1; }
-
-            my = drawImage.height - my;
-
-            colorPickerColor = colors[mx + my * drawImage.width];
-
-            pointCircle.fillColor = colors[mx + my * drawImage.width];
+                auto color = drawCache.getTexture().copyToImage()
+                    .getPixel(event.mouseButton.x, event.mouseButton.y);
+                colorPickerColor[0] = color.r / 255.0f;
+                colorPickerColor[1] = color.g / 255.0f;
+                colorPickerColor[2] = color.b / 255.0f;
+                colorPickerColor[3] = 1.0f;
+                pointCircle.setFillColor(color);
                 flags.reset(F_COPY_COLOR_MODE);
                 set_notification_text("Color set");
-
-            UnloadImageColors(colors);
-            UnloadImage(drawImage);
             } else if(flags.test(F_SELECT_TRI_MODE)) {
-            int mx = GetMouseX();
-            int my = GetMouseY();
-            if(mx < 0) { mx = 0; }
-            else if(mx >= (int)width) { mx = width - 1; }
-            if(my < 0) { my = 0; }
-            else if(my >= (int)height) { my = height - 1; }
-
-            for (auto &tri : tris) {
-                if(is_within_shape(tri, {mx, my})) {
-                    tri.outlineColor = invert_color(tri.fillColor);
+                sf::Vector2f mouseXY = window.mapPixelToCoords(
+                    {event.mouseButton.x, event.mouseButton.y});
+                for(unsigned int i = tris.size(); i-- > 0; ) {
+                    if(is_within_shape(tris.at(i), mouseXY)) {
+                        selectedTri = i;
+                        tris[i].setOutlineColor(invert_color(tris[i].getFillColor()));
                         flags.reset(F_SELECT_TRI_MODE);
                         flags.set(F_TRI_EDIT_MODE);
                         flags.set(F_TRI_EDIT_DRAW_TRI);
                         selectedTriBlinkTimer = 1.0f;
-                    selectedTriColor = tri.fillColor;
+                        selectedTriColor[0] = tris[i].getFillColor().r / 255.0f;
+                        selectedTriColor[1] = tris[i].getFillColor().g / 255.0f;
+                        selectedTriColor[2] = tris[i].getFillColor().b / 255.0f;
+                        selectedTriColor[3] = tris[i].getFillColor().a / 255.0f;
                         break;
                     }
                 }
@@ -361,73 +338,44 @@ void Tri::State::handle_events() {
                 }
             }
         }
+    }
 }
 
 void Tri::State::update() {
-    dt = GetFrameTime();
+    ImGui::SFML::Update(window, dt);
 
-    if(notificationAlpha > 0.0f) {
-        notificationAlpha -= dt * STARTING_HELP_FADE_RATE;
-        if(notificationAlpha < 0.0f) {
-            notificationAlpha = 0.0f;
+    if(notification_alpha > 0.0f) {
+        notification_alpha -= dt.asSeconds() * STARTING_HELP_FADE_RATE;
+        if(notification_alpha < 0.0f) {
+            notification_alpha = 0.0f;
         }
     }
 
     if(flags.test(F_COLOR_P_COLOR_DIRTY)) {
         flags.reset(F_COLOR_P_COLOR_DIRTY);
-        pointCircle.fillColor = colorPickerColor;
+        pointCircle.setFillColor(sf::Color(
+            (unsigned char)(255 * colorPickerColor[0]),
+            (unsigned char)(255 * colorPickerColor[1]),
+            (unsigned char)(255 * colorPickerColor[2]),
+            (unsigned char)(255 * colorPickerColor[3])));
     }
 
     if(flags.test(F_BG_COLOR_P_COLOR_DIRTY)) {
         flags.reset(F_BG_COLOR_P_COLOR_DIRTY);
-        bgColor = bgColorPickerColor;
-        bgColor.a = 255;
+        bgColor.r = (unsigned char)(255 * bgColorPickerColor[0]);
+        bgColor.g = (unsigned char)(255 * bgColorPickerColor[1]);
+        bgColor.b = (unsigned char)(255 * bgColorPickerColor[2]);
     }
 
     if(flags.test(F_TRI_EDIT_MODE)) {
-        selectedTriBlinkTimer -= dt * TRIANGLES_EDIT_TRI_BLINK_RATE;
+        selectedTriBlinkTimer -= dt.asSeconds() * TRIANGLES_EDIT_TRI_BLINK_RATE;
         if(selectedTriBlinkTimer <= 0.0f) {
             selectedTriBlinkTimer = 1.0f;
             flags.flip(F_TRI_EDIT_DRAW_TRI);
         }
     }
-}
-
-void Tri::State::draw() {
-    // Should be able to directly draw a texture held by the RenderTexture2D
-    if(flags.test(F_DRAW_CACHE_INITIALIZED)) {
-        // draw cache initialized
-        check_draw_cache();
-        BeginDrawing();
-        // hack to flip in the y direction, since RenderTexture2D's texture
-        // is flipped
-        DrawTextureRec(
-            drawCache.texture,
-            {
-                0.0f,
-                0.0f,
-                (float)drawCache.texture.width,
-                (float)-drawCache.texture.height
-            },
-            {0.0f, 0.0f},
-            WHITE);
-    } else {
-        BeginDrawing();
-        draw_to_target(nullptr);
-    }
-
-    if(flags.test(F_TRI_EDIT_MODE) && flags.test(F_TRI_EDIT_DRAW_TRI)) {
-//        tris.at(selectedTri).setOutlineThickness(4.0f);
-        tris[selectedTri].draw();
-//        tris.at(selectedTri).setOutlineThickness(0.0f);
-    }
-
-    if(can_draw()) {
-        for(unsigned int i = 0; i < currentTri_state; ++i) {
-            DrawCircle(currentTri[i].x, currentTri[i].y, pointCircle.getRadius(), pointCircle.fillColor);
-        }
-    }
 
+    // Seems misleading, but imgui handles setting up the window during update
     Tri::draw_notification(this);
     Tri::draw_color_picker(this);
     Tri::draw_bg_color_picker(this);
@@ -436,27 +384,48 @@ void Tri::State::draw() {
     Tri::draw_save(this);
     Tri::draw_help(this);
 
-    EndDrawing();
+    ImGui::EndFrame();
 }
 
-void Tri::State::draw_to_target(RenderTexture2D *target) {
-    if(target) {
-        BeginTextureMode(*target);
-        ClearBackground(bgColor);
-
-        // draw tris
-        for(unsigned int i = 0; i < tris.size(); ++i) {
-            tris[i].draw();
+void Tri::State::draw() {
+    if(flags.test(F_DRAW_CACHE_INITIALIZED)) {
+        // draw cache initialized
+        if(flags.test(F_DRAW_CACHE_DIRTY)) {
+            // draw cache dirty
+            flags.reset(F_DRAW_CACHE_DIRTY);
+            draw_to_target(&drawCache);
+            drawCache.display();
         }
-        EndTextureMode();
+        window.draw(drawCacheSprite);
     } else {
-        // Expects BeginDrawing() already having been called prior to this fn
-        ClearBackground(bgColor);
+        draw_to_target(&window);
+    }
+
+    if(flags.test(F_TRI_EDIT_MODE) && flags.test(F_TRI_EDIT_DRAW_TRI)) {
+        tris.at(selectedTri).setOutlineThickness(4.0f);
+        window.draw(tris[selectedTri]);
+        tris.at(selectedTri).setOutlineThickness(0.0f);
+    }
+
+    if(can_draw()) {
+        for(unsigned int i = 0; i < currentTri_state; ++i) {
+            pointCircle.setPosition(currentTri[i]);
+            window.draw(pointCircle);
+        }
+    }
+
+    // draw gui stuff
+    ImGui::SFML::Render(window);
+
+    window.display();
+}
+
+void Tri::State::draw_to_target(sf::RenderTarget *target) {
+    target->clear(bgColor);
 
     // draw tris
     for(unsigned int i = 0; i < tris.size(); ++i) {
-            tris[i].draw();
-        }
+        target->draw(tris[i]);
     }
 }
 
@@ -473,73 +442,66 @@ const Tri::State::BitsetType Tri::State::get_flags() const {
 }
 
 float Tri::State::get_notification_alpha() const {
-    return notificationAlpha;
+    return notification_alpha;
 }
 
 const char* Tri::State::get_notification_text() const {
-    return notificationText.data();
+    return notification_text.data();
 }
 
 void Tri::State::set_notification_text(const char *text) {
-    notificationText.fill(0);
-    std::strncpy(notificationText.data(),
+    notification_text.fill(0);
+    std::strncpy(notification_text.data(),
         text,
-        notificationText.max_size() - 1);
-    notificationAlpha = 1.0f;
+        notification_text.max_size() - 1);
+    notification_alpha = 1.0f;
 }
 
-void Tri::State::append_notification_text(const char *text) {
-    auto length = std::strlen(notificationText.data());
-    if(length + 1 >= notificationText.max_size()) {
-        return;
-    }
-    std::strncpy(
-        notificationText.data() + length,
-        text,
-        notificationText.max_size() - length - 1);
-    notificationAlpha = 1.0f;
-}
-
-Color& Tri::State::get_color() {
+float* Tri::State::get_color() {
     flags.set(F_COLOR_P_COLOR_DIRTY);
     return colorPickerColor;
 }
 
-Color& Tri::State::get_bg_color() {
+float* Tri::State::get_bg_color() {
     flags.set(F_BG_COLOR_P_COLOR_DIRTY);
     return bgColorPickerColor;
 }
 
-std::array<char, 256>* Tri::State::get_save_filename_buffer() {
+Tri::State::FilenameBufferType* Tri::State::get_save_filename_buffer() {
     return &saveFilenameBuffer;
 }
 
 bool Tri::State::do_save() {
-    RenderTexture2D saveTexture = LoadRenderTexture(width, height);
+    sf::RenderTexture saveTexture;
+    if(!saveTexture.create(width, height)) {
+#ifndef NDEBUG
+        puts("ERROR: Failed to create texture for saving");
+#endif
+        failedMessage = std::string("Failed to create texture for saving");
+        return false;
+    }
 
     draw_to_target(&saveTexture);
+    saveTexture.display();
 
-    Image saveImage = LoadImageFromTexture(saveTexture.texture);
-    ImageFlipVertical(&saveImage);
-    UnloadRenderTexture(saveTexture);
-    if(ExportImage(saveImage, saveFilenameBuffer.data())) {
+    sf::Image saveImage = saveTexture.getTexture().copyToImage();
+    std::string filename = std::string(saveFilenameBuffer.data());
+    if(saveImage.saveToFile(filename)) {
 #ifndef NDEBUG
-        printf("Saved to \"%s\"\n", saveFilenameBuffer.data());
+        printf("Saved to \"%s\"\n", filename.c_str());
 #endif
         failedMessage.clear();
-        UnloadImage(saveImage);
         return true;
     } else {
 #ifndef NDEBUG
-        printf("ERROR: Failed to save \"%s\"\n", saveFilenameBuffer.data());
+        printf("ERROR: Failed to save \"%s\"\n", filename.c_str());
 #endif
         failedMessage = std::string("Failed to save (does the name end in \".png\"?)");
-        UnloadImage(saveImage);
         return false;
     }
 }
 
-const std::string& Tri::State::failed_message() const {
+std::string_view Tri::State::failed_message() const {
     return failedMessage;
 }
 
@@ -584,35 +546,39 @@ void Tri::State::close_bg_color_picker() {
 }
 
 bool Tri::State::change_width_height() {
-    if(inputWidth < 0 || inputHeight < 0) {
+    std::bitset<2> warnings;
+    if(inputWidthHeight[0] < 0 || inputWidthHeight[1] < 0) {
         failedMessage = "Width or Height cannot be less than 0";
         return false;
     }
-    if(inputWidth < 800) {
-        inputWidth = 800;
+    if(inputWidthHeight[0] < 200) {
+        inputWidthHeight[0] = 200;
+        warnings.set(F_DISPLAY_HELP);
     }
-    if(inputHeight < 600) {
-        inputHeight = 600;
+    if(inputWidthHeight[1] < 150) {
+        inputWidthHeight[1] = 150;
+        warnings.set(F_IS_RUNNING);
     }
 
-    notificationText.fill(0);
-    std::array<char, 5> tempBuf = {0, 0, 0, 0, 0};
+    if(warnings.test(0) && warnings.test(1)) {
+        set_notification_text("Width set to 200\nHeight set to 150");
+    } else if(warnings.test(0)) {
+        set_notification_text("Width set to 200");
+    } else if(warnings.test(1)) {
+        set_notification_text("Height set to 150");
+    }
 
-    append_notification_text("Width set to ");
-    snprintf(tempBuf.data(), 5, "%u", inputWidth);
-    append_notification_text(tempBuf.data());
+    this->width = inputWidthHeight[0];
+    this->height = inputWidthHeight[1];
 
-    append_notification_text(", Height set to ");
-    snprintf(tempBuf.data(), 5, "%u", inputHeight);
-    append_notification_text(tempBuf.data());
-
-    this->width = inputWidth;
-    this->height = inputHeight;
-
-    UnloadRenderTexture(drawCache);
-    SetWindowSize(this->width, this->height);
-    drawCache = LoadRenderTexture(this->width, this->height);
+    window.setSize({this->width, this->height});
+    sf::View newView(
+        sf::Vector2f(width / 2.0f, height / 2.0f),
+        sf::Vector2f(width, height));
+    window.setView(newView);
 
+    drawCache.create(width, height);
+    drawCacheSprite.setTexture(drawCache.getTexture(), true);
     flags.set(F_DRAW_CACHE_DIRTY);
 
     currentTri_state = CurrentState::NONE;
@@ -620,10 +586,11 @@ bool Tri::State::change_width_height() {
     return true;
 }
 
+int* Tri::State::get_input_width_height() {
+    return inputWidthHeight;
+}
+
 void Tri::State::close_input_width_height_window() {
-    failedMessage.clear();
-    inputWidth = width;
-    inputHeight = height;
     flags.reset(F_DISPLAY_CHANGE_SIZE);
 }
 
@@ -631,42 +598,31 @@ float Tri::State::get_pi() const {
     return pi;
 }
 
-Color& Tri::State::get_selected_tri_color() {
-    tris.at(selectedTri).fillColor = selectedTriColor;
+float* Tri::State::get_selected_tri_color() {
+    tris.at(selectedTri).setFillColor(sf::Color(
+        (unsigned char)(255.0f * selectedTriColor[0]),
+        (unsigned char)(255.0f * selectedTriColor[1]),
+        (unsigned char)(255.0f * selectedTriColor[2]),
+        (unsigned char)(255.0f * selectedTriColor[3])));
     return selectedTriColor;
 }
 
 void Tri::State::close_selected_tri_mode() {
-    tris.at(selectedTri).fillColor = selectedTriColor;
+    tris.at(selectedTri).setFillColor(sf::Color(
+        (unsigned char)(255.0f * selectedTriColor[0]),
+        (unsigned char)(255.0f * selectedTriColor[1]),
+        (unsigned char)(255.0f * selectedTriColor[2]),
+        (unsigned char)(255.0f * selectedTriColor[3])));
     flags.set(F_DRAW_CACHE_DIRTY);
     reset_modes();
 }
 
-bool Tri::State::check_draw_cache() {
-    if(flags.test(F_DRAW_CACHE_INITIALIZED) && flags.test(F_DRAW_CACHE_DIRTY)) {
-        // draw cache initialized and dirty
-        flags.reset(F_DRAW_CACHE_DIRTY);
-        draw_to_target(&drawCache);
-        return true;
-    } else {
-        return false;
-    }
-}
-
-int* Tri::State::get_input_width() {
-    return &inputWidth;
-}
-
-int* Tri::State::get_input_height() {
-    return &inputHeight;
-}
-
 void Tri::State::restore_points_on_tri_del(Action::IndexT end) {
     assert(end < history.size()
         && "Index on history must be in range");
     currentTri[2].x = history[end].data.tri[4];
     currentTri[2].y = history[end].data.tri[5];
-    pointCircle.fillColor = history[end].color;
+    pointCircle.setFillColor(history[end].color);
     unsigned int currentTriIdx = 1;
     while(end-- > 0) {
         if(history[end].type == Action::AT_POINT) {

src/state.hpp

@@ -7,13 +7,8 @@
 #include <vector>
 #include <array>
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Weffc++"
-#include "glm/glm.hpp"
-#pragma GCC diagnostic pop
-
-#include "triangle.hpp"
-#include "circle.hpp"
+#include <SFML/System.hpp>
+#include <SFML/Graphics.hpp>
 
 namespace Tri {
     class State {
@@ -37,7 +32,6 @@ namespace Tri {
             F_SELECT_TRI_MODE           = 11,
             F_TRI_EDIT_MODE             = 12,
             F_TRI_EDIT_DRAW_TRI         = 13,
-            F_TAB_TOGGLE                = 14,
         };
 
     private:
@@ -55,16 +49,16 @@ namespace Tri {
             Action();
             Action(const Type& type,
                    IndexT idx,
-                   const Color& color,
+                   const sf::Color& color,
                    float *data);
             Action(Type&& type,
                    IndexT idx,
-                   Color&& color,
+                   sf::Color&& color,
                    float *data);
 
             Type type;
             IndexT idx;
-            Color color;
+            sf::Color color;
             union Data {
                 float tri[6];
                 float point[2];
@@ -79,33 +73,38 @@ namespace Tri {
         BitsetType flags;
         unsigned int width;
         unsigned int height;
-        float dt;
-        float notificationAlpha;
-        std::array<char, 256> notificationText;
+        const sf::Time dt;
+        float notification_alpha;
+        typedef std::array<char, 256> NotificationBufferType;
+        NotificationBufferType notification_text;
 
-        std::vector<Triangle> tris;
-        std::array<glm::vec2, 3> currentTri;
+        sf::RenderWindow window;
+        std::vector<sf::ConvexShape> tris;
+        sf::Vector2f currentTri[3];
         CurrentState currentTri_state;
-        Circle pointCircle;
+        sf::CircleShape pointCircle;
 
-        Color colorPickerColor;
-        Color bgColorPickerColor;
-        Color bgColor;
+        sf::Event event;
 
-        std::array<char, 256> saveFilenameBuffer;
+        float colorPickerColor[4];
+        float bgColorPickerColor[3];
+        sf::Color bgColor;
+
+        typedef std::array<char, 256> FilenameBufferType;
+        FilenameBufferType saveFilenameBuffer;
         std::string failedMessage;
 
-        RenderTexture2D drawCache;
+        sf::RenderTexture drawCache;
+        sf::Sprite drawCacheSprite;
+
+        int inputWidthHeight[2];
 
         const float pi;
 
         unsigned int selectedTri;
-        Color selectedTriColor;
+        float selectedTriColor[4];
         float selectedTriBlinkTimer;
 
-        int inputWidth;
-        int inputHeight;
-
         std::vector<Action> history;
         Action::IndexT history_idx;
 
@@ -115,7 +114,7 @@ namespace Tri {
         void draw();
 
     private:
-        void draw_to_target(RenderTexture2D *target);
+        void draw_to_target(sf::RenderTarget *target);
 
     public:
         unsigned int get_width() const;
@@ -128,15 +127,14 @@ namespace Tri {
 
     private:
         void set_notification_text(const char *text);
-        void append_notification_text(const char *text);
 
     public:
-        Color& get_color();
-        Color& get_bg_color();
+        float* get_color();
+        float* get_bg_color();
 
-        std::array<char, 256>* get_save_filename_buffer();
+        FilenameBufferType* get_save_filename_buffer();
         bool do_save();
-        const std::string& failed_message() const;
+        std::string_view failed_message() const;
         void close_save();
 
     private:
@@ -149,22 +147,17 @@ namespace Tri {
         void close_bg_color_picker();
 
         bool change_width_height();
+        int* get_input_width_height();
         void close_input_width_height_window();
 
         float get_pi() const;
 
-        Color& get_selected_tri_color();
+        float* get_selected_tri_color();
         void close_selected_tri_mode();
 
-    private:
-        bool check_draw_cache();
-
-    public:
-        int* get_input_width();
-        int* get_input_height();
-
     private:
         void restore_points_on_tri_del(Action::IndexT end);
+
     };
 }
 

src/triangle.cpp

@@ -1,63 +0,0 @@
-#include "triangle.hpp"
-
-Tri::Triangle::Triangle() :
-Shape(),
-vertices{
-    glm::vec2{0.0f, 0.0f},
-    glm::vec2{1.0f, 0.0f},
-    glm::vec2{0.0f, 1.0f}
-}
-{}
-
-Tri::Triangle::Triangle(std::array<glm::vec2, 3> vertices) :
-Shape(),
-vertices(vertices)
-{}
-
-Tri::Triangle::Triangle(std::array<glm::vec2, 3> vertices, Color fillColor) :
-Shape(fillColor),
-vertices(vertices)
-{}
-
-Tri::Triangle::Triangle(std::array<glm::vec2, 3> vertices, Color fillColor, Color outlineColor) :
-Shape(fillColor, outlineColor),
-vertices(vertices)
-{}
-
-Tri::Shape& Tri::Triangle::draw() {
-    std::array<glm::vec2, 3> transformed = {
-        transform * glm::vec3(vertices[0].x, vertices[0].y, 1.0f),
-        transform * glm::vec3(vertices[1].x, vertices[1].y, 1.0f),
-        transform * glm::vec3(vertices[2].x, vertices[2].y, 1.0f)
-    };
-    DrawTriangle(
-        {transformed[0].x, transformed[0].y},
-        {transformed[1].x, transformed[1].y},
-        {transformed[2].x, transformed[2].y},
-        fillColor);
-//    DrawTriangleLines(
-//        {transformed[0].x, transformed[0].y},
-//        {transformed[1].x, transformed[1].y},
-//        {transformed[2].x, transformed[2].y},
-//        outlineColor);
-    return *this;
-}
-
-void Tri::Triangle::getVertices(std::vector<glm::vec2> &verticesOut) const {
-    verticesOut.clear();
-    for(const glm::vec2 &vertex : vertices) {
-        verticesOut.push_back(vertex);
-    }
-}
-
-void Tri::Triangle::getTransformedVertices(std::vector<glm::vec2> &verticesOut) const {
-    verticesOut.clear();
-    for(glm::vec2 vertex : vertices) {
-        vertex = transform * glm::vec3(vertex.x, vertex.y, 1.0f);
-        verticesOut.push_back(vertex);
-    }
-}
-
-float Tri::Triangle::getRadius() const {
-    return 0.0f;
-}

src/triangle.hpp

@@ -1,29 +0,0 @@
-#ifndef TRIANGLES_TRIANGLE_HPP
-#define TRIANGLES_TRIANGLE_HPP
-
-#include <array>
-
-#include "shape.hpp"
-
-namespace Tri {
-
-struct Triangle : public Shape {
-    Triangle();
-    Triangle(std::array<glm::vec2, 3> vertices);
-    Triangle(std::array<glm::vec2, 3> vertices, Color fillColor);
-    Triangle(std::array<glm::vec2, 3> vertices, Color fillColor, Color outlineColor);
-
-    std::array<glm::vec2, 3> vertices;
-
-    virtual Shape& draw() override;
-
-    virtual void getVertices(std::vector<glm::vec2> &verticesOut) const override;
-    virtual void getTransformedVertices(std::vector<glm::vec2> &verticesOut) const override;
-
-    virtual float getRadius() const override;
-    virtual void setRadius(float /* radius */) override {};
-}; // struct Triangle
-
-} // namespace Tri
-
-#endif

src/unittest/test_helpers.cpp

@@ -1,73 +1,18 @@
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Weffc++"
-#include "catch_amalgamated.hpp"
-#pragma GCC diagnostic pop
+#include "catch.hpp"
+
+#include <SFML/Graphics.hpp>
 
 #include "helpers.hpp"
-#include "triangle.hpp"
 
-TEST_CASE("Test is_within_shape", "Helpers") {
-    Tri::Triangle triangle({{
-        {0.0f, 10.0f},
-        {10.0f, 10.0f},
-        {10.0f, 0.0f}
-    }});
+TEST_CASE("Test is_within_shape", "[Triangles]") {
+    sf::ConvexShape shape;
+    shape.setPointCount(3);
+    shape.setPoint(0, {0.0f, 10.0f});
+    shape.setPoint(1, {10.0f, 10.0f});
+    shape.setPoint(2, {10.0f, 0.0f});
 
-    CHECK(Tri::is_within_shape(triangle, {2.0f, 2.0f}) == false);
-    CHECK(Tri::is_within_shape(triangle, {5.0f, 15.0f}) == false);
-    CHECK(Tri::is_within_shape(triangle, {15.0f, 5.0f}) == false);
-    CHECK(Tri::is_within_shape(triangle, {7.0f, 7.0f}) == true);
-}
-
-TEST_CASE("Test make_counter_clockwise", "Helpers") {
-    // Note that +x is right and +y is down.
-
-    {
-        // Clockwise triangle.
-        std::array<glm::vec2, 3> tri{{
-            {0.0F, 0.0F}, {1.0F, 0.0F}, {2.0F, 2.0F}
-        }};
-
-        Tri::make_counter_clockwise(tri);
-
-        CHECK(tri.at(0).x == 2.0F);
-        CHECK(tri.at(0).y == 2.0F);
-
-        CHECK(tri.at(1).x == 1.0F);
-        CHECK(tri.at(1).y == 0.0F);
-
-        CHECK(tri.at(2).x == 0.0F);
-        CHECK(tri.at(2).y == 0.0F);
-    }
-
-    {
-        // Counter-Clockwise triangle.
-        std::array<glm::vec2, 3> tri{{
-            {2.0F, 0.0F}, {3.0F, 3.0F}, {4.0F, 1.0F}
-        }};
-
-        Tri::make_counter_clockwise(tri);
-
-        CHECK(tri.at(0).x == 2.0F);
-        CHECK(tri.at(0).y == 0.0F);
-
-        CHECK(tri.at(1).x == 3.0F);
-        CHECK(tri.at(1).y == 3.0F);
-
-        CHECK(tri.at(2).x == 4.0F);
-        CHECK(tri.at(2).y == 1.0F);
-    }
-}
-
-TEST_CASE("Test invert_color", "Helpers") {
-    Color c{
-        255, 255, 255, 255
-    };
-
-    c = Tri::invert_color(c);
-
-    CHECK(c.r == 0);
-    CHECK(c.g == 0);
-    CHECK(c.b == 0);
-    CHECK(c.a == 255);
+    CHECK(Tri::is_within_shape(shape, {2.0f, 2.0f}) == false);
+    CHECK(Tri::is_within_shape(shape, {5.0f, 15.0f}) == false);
+    CHECK(Tri::is_within_shape(shape, {15.0f, 5.0f}) == false);
+    CHECK(Tri::is_within_shape(shape, {7.0f, 7.0f}) == true);
 }

src/unittest/test_main.cpp

@@ -0,0 +1,2 @@
+#define CATCH_CONFIG_MAIN
+#include "catch.hpp"

third_party/glm

@@ -1 +0,0 @@
-Subproject commit 673a963a0f1eb82f5fcef00b7b873371555e5814

third_party/imgui

@@ -0,0 +1 @@
+Subproject commit 9418dcb69355558f70de260483424412c5ca2fce

third_party/imgui-sfml

@@ -0,0 +1 @@
+Subproject commit 488c321155547cb499697dac155aa6269d53c21f

third_party/raygui

@@ -1 +0,0 @@
-Subproject commit 25c8c65a6e5f0f4d4b564a0343861898c6f2778b