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Triangles
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WIP Replace SFML with Raylib 

Need to fix Raygui usage in helpers.hpp.
Need to fix triangles being drawn flipped over the x-axis.
This commit is contained in:
Stephen Seo 2021-03-29 17:03:39 +09:00
parent ef19ff326a
commit 2919be2aff
26 changed files with 834 additions and 470 deletions
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12
.gitmodules vendored
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@ -1,6 +1,6 @@
[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
[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

62
CMakeLists.txt
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@ -1,14 +1,14 @@
cmake_minimum_required(VERSION 3.0)
cmake_minimum_required(VERSION 3.8.2)
project(Triangles LANGUAGES CXX VERSION 1.0)
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 \
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 \
'git submodule update'!")
endif()
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 \
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 \
'git submodule update'!")
endif()
@ -16,22 +16,16 @@ 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
third_party/imgui/imgui.cpp
third_party/imgui/imgui_draw.cpp
third_party/imgui/imgui_widgets.cpp
third_party/imgui-sfml/imgui-SFML.cpp
src/shape.cpp
src/triangle.cpp
src/circle.cpp
src/raygui.cpp
)
if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
@ -57,44 +51,28 @@ 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(SFML 2 REQUIRED
COMPONENTS audio network graphics window system)
find_package(raylib REQUIRED)
else()
find_package(SFML 2 REQUIRED
COMPONENTS audio-s network-s graphics-s window-s system-s)
add_definitions(-DSFML_STATIC)
find_package(raylib REQUIRED)
endif()
if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
target_link_libraries(TrianglesLib PUBLIC
sfml-graphics sfml-window sfml-system
raylib
opengl32
)
else()
target_link_libraries(TrianglesLib PUBLIC
sfml-graphics sfml-window sfml-system
raylib
GL
)
endif()
if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
target_include_directories(TrianglesLib PUBLIC
${CMAKE_CURRENT_SOURCE_DIR}/src
${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\"")
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
)
if(CMAKE_BUILD_TYPE MATCHES "Debug")
set(Triangles_UNIT_TEST_SOURCES

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

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

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

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

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

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

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

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

60
src/circle.cpp Normal file
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@ -0,0 +1,60 @@
#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;
}

29
src/circle.hpp Normal file
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@ -0,0 +1,29 @@
#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

305
src/helpers.hpp
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@ -3,9 +3,12 @@
#include <cmath>
#include <optional>
#include <cassert>
#include <imgui.h>
#include <raylib.h>
#include <raygui.h>
#include "shape.hpp"
#include "state.hpp"
#define SHOW_HELP_WIDTH (state->get_width() / 2.0f)
@ -20,163 +23,265 @@ 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)) {
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")) {
GuiFade(1.0f);
if(!GuiWindowBox({10.0f,
10.0f,
800.0f - 20.0f,
600.0f - 20.0f},
"Help")) {
GuiLabel(
{4.0f, 4.0f, 800.0f - 28.0f, 16.0f},
"This is the help window - Press \"H\" to toggle this window");
GuiLabel(
{4.0f, 22.0f, 800.0f - 28.0f, 16.0f},
"Click anywhere to create triangles, one point at a time");
GuiLabel(
{4.0f, 40.0f, 800.0f - 28.0f, 16.0f},
"You cannot draw when a window is open");
GuiLabel(
{4.0f, 58.0f, 800.0f - 28.0f, 16.0f},
"Press \"U\" to undo. Clicking will remove all future undo history");
GuiLabel(
{4.0f, 76.0f, 800.0f - 28.0f, 16.0f},
"Press \"R\" to redo.");
GuiLabel(
{4.0f, 94.0f, 800.0f - 28.0f, 16.0f},
"Press \"C\" to change colors");
GuiLabel(
{4.0f, 112.0f, 800.0f - 28.0f, 16.0f},
"Press \"B\" to change background color");
GuiLabel(
{4.0f, 130.0f, 800.0f - 28.0f, 16.0f},
"Press \"P\" to set current color to a color on screen");
GuiLabel(
{4.0f, 148.0f, 800.0f - 28.0f, 16.0f},
"Press \"S\" to save what was drawn as a png image");
if(GuiButton({4.0f, 168.0f, 100.0f, 16.0f}, "Close")) {
state->close_help();
}
} else {
state->close_help();
}
ImGui::End();
}
}
inline void draw_notification(Tri::State *state) {
float alpha = state->get_notification_alpha();
if(alpha > 0.0f) {
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));
ImGui::Begin(
"Notification Window",
nullptr,
ImGuiWindowFlags_NoDecoration | ImGuiWindowFlags_NoSavedSettings);
ImGui::SetWindowFontScale(3.0f);
ImGui::Text("%s", state->get_notification_text());
ImGui::End();
ImGui::PopStyleVar();
GuiFade(alpha);
GuiPanel({(800 - SHOW_HELP_WIDTH) / 2.0f,
(600 - SHOW_HELP_HEIGHT) / 2.0f,
SHOW_HELP_WIDTH,
SHOW_HELP_HEIGHT});
GuiLabel({4.0f, 4.0f, SHOW_HELP_WIDTH - 8.0f, SHOW_HELP_HEIGHT - 8.0f},
state->get_notification_text());
}
}
inline void draw_color_picker(Tri::State *state) {
if(state->get_flags().test(Tri::State::F_DISPLAY_COLOR_P)) {
ImGui::Begin("Tri Color Picker");
ImGui::ColorPicker4("Tri Color", state->get_color());
if(ImGui::Button("Close")) {
GuiFade(1.0f);
if(!GuiWindowBox({4.0f, 4.0f, 242.0f, 292.0f}, "Tri Color Picker")) {
auto &colorArray = state->get_color();
Color color = GuiColorPicker(
{4.0f, 4.0f, 234.0f, 264.0f},
{(unsigned char)(colorArray[0] * 255.0f),
(unsigned char)(colorArray[1] * 255.0f),
(unsigned char)(colorArray[2] * 255.0f),
(unsigned char)(colorArray[3] * 255.0f)});
colorArray = {
color.r / 255.0f,
color.g / 255.0f,
color.b / 255.0f,
color.a / 255.0f
};
if(GuiButton({4.0f, 268.0f, 234.0f, 16.0f}, "Close")) {
state->close_color_picker();
}
} else {
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)) {
ImGui::Begin("BG Color Picker");
ImGui::ColorPicker3("BG Color", state->get_bg_color());
if(ImGui::Button("Close")) {
GuiFade(1.0f);
if(!GuiWindowBox({250.0f, 4.0f, 242.0f, 292.0f}, "BG Color Picker")) {
auto &colorArray = state->get_bg_color();
Color color = GuiColorPicker(
{4.0f, 4.0f, 234.0f, 264.0f},
{(unsigned char)(colorArray[0] * 255.0f),
(unsigned char)(colorArray[1] * 255.0f),
(unsigned char)(colorArray[2] * 255.0f),
255});
colorArray = {
color.r / 255.0f,
color.g / 255.0f,
color.b / 255.0f
};
if(GuiButton({4.0f, 268.0f, 234.0f, 16.0f}, "Close")) {
state->close_bg_color_picker();
}
} else {
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();
ImGui::Begin("Save");
ImGui::InputText("Filename", filenameBuffer->data(), filenameBuffer->size() - 1);
if(ImGui::Button("Save")) {
if(state->do_save()) {
state->close_save();
GuiFade(1.0f);
if(!GuiWindowBox({4.0f, 300.0f, 292.0f, 292.0f}, "Save")) {
GuiTextBox(
{4.0f, 4.0f, 284.0f, 150.0f},
filenameBuffer->data(),
filenameBuffer->size() - 1,
true);
if(GuiButton({4.0f, 158.0f, 50.0f, 16.0f}, "Save")) {
if(state->do_save()) {
state->close_save();
}
}
} else if(ImGui::Button("Cancel")) {
const std::string &string = state->failed_message();
if(!string.empty()) {
GuiLabel({4.0f, 178.0f, 284.0f, 16.0f}, string.c_str());
}
} else {
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)) {
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(ImGui::Button("Cancel")) {
state->close_input_width_height_window();
}
if(ImGui::Button("Set")) {
if(state->change_width_height()) {
GuiFade(1.0f);
if(!GuiWindowBox({300.0f, 300.0f, 292.0f, 292.0f}, "Change Size")) {
GuiValueBox(
{4.0f, 4.0f, 80.0f, 16.0f},
"Width",
state->get_input_width(),
800,
1920,
true);
GuiValueBox(
{4.0f, 24.0f, 80.0f, 16.0f},
"Height",
state->get_input_height(),
600,
1080,
true);
const std::string &failMessage = state->failed_message();
if(!failMessage.empty()) {
GuiLabel({4.0f, 44.0f, 284.0f, 16.0f}, failMessage.c_str());
}
if(GuiButton({4.0f, 70.0f, 70.0f, 16.0f}, "Cancel")) {
state->close_input_width_height_window();
}
if(GuiButton({58.0f, 70.0f, 50.0f, 16.0f}, "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 sf::ConvexShape &shape,
sf::Vector2f xy) {
std::optional<bool> is_right;
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()));
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);
t_b = t_b - t_a;
t_a = xy - t_a;
xy = xy - vertices[0];
return std::sqrt(xy.x * xy.x + xy.y * xy.y) <= radius;
} else {
assert(vertices.size() > 2);
// TODO
// cross product, where z coordinate is 0
// Use sign of z value to determine if line is to right or left
//
// a x b = c
// a_1 b_1 0
// a_2 b_2 0
// 0 0 a_1 * b_2 - a_2 * b_1
//
// in this case "a" is "t_b"
float z = t_b.x * t_a.y - t_b.y * t_a.x;
if(is_right.has_value()) {
if(is_right.value()) {
if(z >= 0.0f) {
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];
// cross product, where z coordinate is 0
// Use sign of z value to determine if line is to right or left
//
// a x b = c
// a_1 b_1 0
// a_2 b_2 0
// 0 0 a_1 * b_2 - a_2 * b_1
//
// in this case "a" is "t_b"
float z = t_b.x * t_a.y - t_b.y * t_a.x;
if(is_right.has_value()) {
if(is_right.value()) {
if(z >= 0.0f) {
return false;
}
} else if(z < 0.0f) {
return false;
}
} else if(z < 0.0f) {
return false;
} else {
is_right = z < 0.0f;
}
} else {
is_right = z < 0.0f;
}
return true;
}
return true;
}
inline sf::Color invert_color(const sf::Color &other) {
return sf::Color(255 - other.r, 255 - other.g, 255 - other.b);
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 void draw_edit_tri(Tri::State *state) {
if(state->get_flags().test(Tri::State::F_TRI_EDIT_MODE)) {
ImGui::Begin("Edit Tri Color Picker");
ImGui::ColorPicker4("Tri Color", state->get_selected_tri_color());
if(ImGui::Button("Close")) {
GuiFade(1.0f);
if(!GuiWindowBox({500.0f, 4.0f, 242.0f, 292.0f}, "Edit Tri Color Picker")) {
auto &colorArray = state->get_selected_tri_color();
Color color = GuiColorPicker(
{4.0f, 4.0f, 234.0f, 264.0f},
{(unsigned char)(colorArray[0] * 255.0f),
(unsigned char)(colorArray[1] * 255.0f),
(unsigned char)(colorArray[2] * 255.0f),
(unsigned char)(colorArray[3] * 255.0f)});
colorArray = {
color.r / 255.0f,
color.g / 255.0f,
color.b / 255.0f,
color.a / 255.0f
};
if(GuiButton({4.0f, 268.0f, 234.0f, 16.0f}, "Close")) {
state->close_selected_tri_mode();
}
} else {
state->close_selected_tri_mode();
}
ImGui::End();
}
}
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;
}
}
}

7
src/main.cpp
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@ -1,10 +1,3 @@
#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

2
src/raygui.cpp Normal file
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@ -0,0 +1,2 @@
#define RAYGUI_IMPLEMENTATION
#include <raygui.h>

42
src/shape.cpp Normal file
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@ -0,0 +1,42 @@
#include "shape.hpp"
#include <glm/ext/matrix_transform.hpp>
#include <glm/gtx/matrix_transform_2d.hpp>
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;
}

37
src/shape.hpp Normal file
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@ -0,0 +1,37 @@
#ifndef TRIANGLES_SHAPE_HPP
#define TRIANGLES_SHAPE_HPP
#include <vector>
#include <raylib.h>
#include <glm/glm.hpp>
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

568
src/state.cpp
View File

@ -5,7 +5,7 @@
#include <string>
#include <cmath>
#include <imgui-SFML.h>
#include <raylib.h>
#include "helpers.hpp"
@ -18,226 +18,245 @@
Tri::State::State(int argc, char **argv) :
width(800),
height(600),
dt(sf::microseconds(16666)),
dt(1.0f/60.0f),
notification_alpha(1.0f),
window(sf::VideoMode(800, 600), "Triangles", sf::Style::Titlebar | sf::Style::Close),
trisIndex(0),
currentTri_state(CurrentState::NONE),
currentTri_maxState(CurrentState::NONE),
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))
bgColor(BLACK),
pi(std::acos(-1.0f)),
inputWidth(800),
inputHeight(600)
{
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);
pointCircle.translate({7.0f, 7.0f});
pointCircle.fillColor = WHITE;
pointCircle.outlineColor = BLACK;
saveFilenameBuffer.fill(0);
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);
drawCacheSprite.setTexture(drawCache.getTexture(), true);
}
drawCache = LoadRenderTexture(width, height);
flags.set(F_DRAW_CACHE_INITIALIZED);
flags.set(F_DRAW_CACHE_DIRTY);
GuiSetStyle(DEFAULT, BACKGROUND_COLOR, 0x303030);
}
Tri::State::~State() {
window.close();
ImGui::SFML::Shutdown();
UnloadRenderTexture(drawCache);
CloseWindow();
}
void Tri::State::handle_events() {
while(window.pollEvent(event)) {
ImGui::SFML::ProcessEvent(event);
if(event.type == sf::Event::Closed) {
window.close();
flags.reset(F_IS_RUNNING);
} else if(event.type == sf::Event::KeyPressed) {
if(!flags.test(F_DISPLAY_SAVE)) {
// TODO use a switch statement
if(event.key.code == sf::Keyboard::H) {
flags.flip(F_DISPLAY_HELP);
} else if(event.key.code == sf::Keyboard::U) {
flags.set(F_DRAW_CACHE_DIRTY);
if(currentTri_state > 0) {
switch(currentTri_state) {
case FIRST:
currentTri_state = CurrentState::NONE;
break;
case SECOND:
currentTri_state = CurrentState::FIRST;
break;
default:
assert(!"Unreachable code");
break;
}
} else if(trisIndex > 0) {
--trisIndex;
}
} else if(event.key.code == sf::Keyboard::R) {
flags.set(F_DRAW_CACHE_DIRTY);
if(currentTri_state != CurrentState::NONE
&& currentTri_state < currentTri_maxState) {
switch(currentTri_state) {
case NONE:
currentTri_state = CurrentState::FIRST;
break;
case FIRST:
currentTri_state = CurrentState::SECOND;
break;
default:
assert(!"Unreachable code");
break;
}
} else if(tris.size() > trisIndex) {
++trisIndex;
} else if(currentTri_state < currentTri_maxState) {
switch(currentTri_state) {
case NONE:
currentTri_state = CurrentState::FIRST;
break;
case FIRST:
currentTri_state = CurrentState::SECOND;
break;
default:
assert(!"Unreachable code");
break;
}
}
} 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);
}
} 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);
}
} else if(event.key.code == sf::Keyboard::S) {
flags.flip(F_DISPLAY_SAVE);
} else if(event.key.code == sf::Keyboard::P) {
flags.flip(F_COPY_COLOR_MODE);
if(flags.test(F_COPY_COLOR_MODE)) {
set_notification_text(
"Copy color mode\n"
"Click to change\n"
"current draw color\n"
"to what was\n"
"clicked on");
} else {
notification_alpha = 0.0f;
}
} else if(event.key.code == sf::Keyboard::I) {
flags.flip(F_DISPLAY_CHANGE_SIZE);
if(!flags.test(F_DISPLAY_CHANGE_SIZE)) {
inputWidthHeight[0] = width;
inputWidthHeight[1] = height;
}
} else if(event.key.code == sf::Keyboard::E) {
if(flags.test(F_TRI_EDIT_MODE)) {
close_selected_tri_mode();
} else {
flags.flip(F_SELECT_TRI_MODE);
if(flags.test(F_SELECT_TRI_MODE)) {
set_notification_text("Click on a tri\nto edit it");
}
if(WindowShouldClose()) {
flags.reset(F_IS_RUNNING);
}
int keyPressed = GetKeyPressed();
while(keyPressed > 0) {
if(!flags.test(F_DISPLAY_SAVE)) {
switch(keyPressed) {
case KEY_H:
flags.flip(F_DISPLAY_HELP);
break;
case KEY_U:
flags.set(F_DRAW_CACHE_DIRTY);
if(currentTri_state > 0) {
switch(currentTri_state) {
case FIRST:
currentTri_state = CurrentState::NONE;
break;
case SECOND:
currentTri_state = CurrentState::FIRST;
break;
default:
assert(!"Unreachable code");
break;
}
} else if(trisIndex > 0) {
--trisIndex;
}
}
} else if(event.type == sf::Event::MouseButtonPressed) {
if(can_draw()) {
switch(currentTri_state) {
case CurrentState::NONE:
currentTri[0] = sf::Vector2f(event.mouseButton.x, event.mouseButton.y);
if(trisIndex < tris.size()) {
tris.resize(trisIndex);
}
currentTri_state = CurrentState::FIRST;
currentTri_maxState = CurrentState::FIRST;
break;
case CurrentState::FIRST:
currentTri[1] = sf::Vector2f(event.mouseButton.x, event.mouseButton.y);
if(trisIndex < tris.size()) {
tris.resize(trisIndex);
}
currentTri_state = CurrentState::SECOND;
currentTri_maxState = CurrentState::SECOND;
break;
case CurrentState::SECOND:
currentTri[2] = sf::Vector2f(event.mouseButton.x, event.mouseButton.y);
if(trisIndex < tris.size()) {
tris.resize(trisIndex);
break;
case KEY_R:
flags.set(F_DRAW_CACHE_DIRTY);
if(currentTri_state != CurrentState::NONE
&& currentTri_state < currentTri_maxState) {
switch(currentTri_state) {
case NONE:
currentTri_state = CurrentState::FIRST;
break;
case FIRST:
currentTri_state = CurrentState::SECOND;
break;
default:
assert(!"Unreachable code");
break;
}
} else if(tris.size() > trisIndex) {
++trisIndex;
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;
currentTri_maxState = CurrentState::NONE;
flags.set(F_DRAW_CACHE_DIRTY);
break;
}
} else if(flags.test(F_COPY_COLOR_MODE)) {
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");
} else if(flags.test(F_SELECT_TRI_MODE)) {
sf::Vector2f mouseXY = window.mapPixelToCoords(
{event.mouseButton.x, event.mouseButton.y});
for(unsigned int i = trisIndex; 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[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;
} else if(currentTri_state < currentTri_maxState) {
switch(currentTri_state) {
case NONE:
currentTri_state = CurrentState::FIRST;
break;
case FIRST:
currentTri_state = CurrentState::SECOND;
break;
default:
assert(!"Unreachable code");
break;
}
}
if(!flags.test(F_TRI_EDIT_MODE)) {
set_notification_text("Did not select\nanything");
break;
case KEY_C:
if(flags.test(F_DISPLAY_COLOR_P)) {
close_color_picker();
} else {
flags.set(F_DISPLAY_COLOR_P);
}
break;
case KEY_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:
flags.flip(F_DISPLAY_SAVE);
break;
case KEY_P:
flags.flip(F_COPY_COLOR_MODE);
if(flags.test(F_COPY_COLOR_MODE)) {
set_notification_text(
"Copy color mode\n"
"Click to change\n"
"current draw color\n"
"to what was\n"
"clicked on");
} else {
notification_alpha = 0.0f;
}
break;
case KEY_I:
flags.flip(F_DISPLAY_CHANGE_SIZE);
if(!flags.test(F_DISPLAY_CHANGE_SIZE)) {
inputWidth = width;
inputHeight = height;
}
break;
case KEY_E:
if(flags.test(F_TRI_EDIT_MODE)) {
close_selected_tri_mode();
} else {
flags.flip(F_SELECT_TRI_MODE);
if(flags.test(F_SELECT_TRI_MODE)) {
set_notification_text("Click on a tri\nto edit it");
}
}
break;
}
}
keyPressed = GetKeyPressed();
}
if(IsMouseButtonPressed(MOUSE_LEFT_BUTTON)) {
if(can_draw()) {
switch(currentTri_state) {
case CurrentState::NONE:
currentTri[0] = {GetMouseX(), GetMouseY()};
if(trisIndex < tris.size()) {
tris.resize(trisIndex);
}
currentTri_state = CurrentState::FIRST;
currentTri_maxState = CurrentState::FIRST;
break;
case CurrentState::FIRST:
currentTri[1] = {GetMouseX(), GetMouseY()};
if(trisIndex < tris.size()) {
tris.resize(trisIndex);
}
currentTri_state = CurrentState::SECOND;
currentTri_maxState = CurrentState::SECOND;
break;
case CurrentState::SECOND:
currentTri[2] = {GetMouseX(), GetMouseY()};
if(trisIndex < tris.size()) {
tris.resize(trisIndex);
}
++trisIndex;
make_counter_clockwise(currentTri);
tris.emplace_back(currentTri, pointCircle.fillColor);
currentTri_state = CurrentState::NONE;
currentTri_maxState = CurrentState::NONE;
flags.set(F_DRAW_CACHE_DIRTY);
break;
}
} else if(flags.test(F_COPY_COLOR_MODE)) {
check_draw_cache();
Image drawImage = GetTextureData(drawCache.texture);
Color *colors = LoadImageColors(drawImage);
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; }
colorPickerColor[0] = colors[mx + my * width].r;
colorPickerColor[1] = colors[mx + my * width].g;
colorPickerColor[2] = colors[mx + my * width].b;
colorPickerColor[3] = 1.0f;
pointCircle.fillColor = colors[mx + my * width];
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(unsigned int i = trisIndex; i-- > 0; ) {
if(is_within_shape(tris.at(i), {mx, my})) {
selectedTri = i;
tris[i].outlineColor = invert_color(tris[i].fillColor);
flags.reset(F_SELECT_TRI_MODE);
flags.set(F_TRI_EDIT_MODE);
flags.set(F_TRI_EDIT_DRAW_TRI);
selectedTriBlinkTimer = 1.0f;
selectedTriColor[0] = tris[i].fillColor.r / 255.0f;
selectedTriColor[1] = tris[i].fillColor.g / 255.0f;
selectedTriColor[2] = tris[i].fillColor.b / 255.0f;
selectedTriColor[3] = tris[i].fillColor.a / 255.0f;
break;
}
}
if(!flags.test(F_TRI_EDIT_MODE)) {
set_notification_text("Did not select\nanything");
}
}
}
}
void Tri::State::update() {
ImGui::SFML::Update(window, dt);
dt = GetFrameTime();
if(notification_alpha > 0.0f) {
notification_alpha -= dt.asSeconds() * STARTING_HELP_FADE_RATE;
notification_alpha -= dt * STARTING_HELP_FADE_RATE;
if(notification_alpha < 0.0f) {
notification_alpha = 0.0f;
}
@ -245,11 +264,11 @@ void Tri::State::update() {
if(flags.test(F_COLOR_P_COLOR_DIRTY)) {
flags.reset(F_COLOR_P_COLOR_DIRTY);
pointCircle.setFillColor(sf::Color(
pointCircle.fillColor = Color{
(unsigned char)(255 * colorPickerColor[0]),
(unsigned char)(255 * colorPickerColor[1]),
(unsigned char)(255 * colorPickerColor[2]),
(unsigned char)(255 * colorPickerColor[3])));
(unsigned char)(255 * colorPickerColor[3])};
}
if(flags.test(F_BG_COLOR_P_COLOR_DIRTY)) {
@ -260,14 +279,40 @@ void Tri::State::update() {
}
if(flags.test(F_TRI_EDIT_MODE)) {
selectedTriBlinkTimer -= dt.asSeconds() * TRIANGLES_EDIT_TRI_BLINK_RATE;
selectedTriBlinkTimer -= dt * 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();
DrawTexture(drawCache.texture, 0, 0, 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) {
pointCircle.resetTransform();
pointCircle.translate(currentTri[i]);
pointCircle.draw();
}
}
// 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);
@ -276,49 +321,28 @@ void Tri::State::update() {
Tri::draw_save(this);
Tri::draw_help(this);
ImGui::EndFrame();
EndDrawing();
}
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();
void Tri::State::draw_to_target(RenderTexture2D *target) {
if(target) {
BeginTextureMode(*target);
ClearBackground(bgColor);
// draw tris
for(unsigned int i = 0; i < trisIndex; ++i) {
tris[i].draw();
}
window.draw(drawCacheSprite);
EndTextureMode();
} else {
draw_to_target(&window);
}
// Expects BeginDrawing() already having been called prior to this fn
ClearBackground(bgColor);
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 tris
for(unsigned int i = 0; i < trisIndex; ++i) {
tris[i].draw();
}
}
// 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 < trisIndex; ++i) {
target->draw(tris[i]);
}
}
unsigned int Tri::State::get_width() const {
@ -349,12 +373,12 @@ void Tri::State::set_notification_text(const char *text) {
notification_alpha = 1.0f;
}
float* Tri::State::get_color() {
std::array<float, 4>& Tri::State::get_color() {
flags.set(F_COLOR_P_COLOR_DIRTY);
return colorPickerColor;
}
float* Tri::State::get_bg_color() {
std::array<float, 3>& Tri::State::get_bg_color() {
flags.set(F_BG_COLOR_P_COLOR_DIRTY);
return bgColorPickerColor;
}
@ -364,36 +388,30 @@ Tri::State::FilenameBufferType* Tri::State::get_save_filename_buffer() {
}
bool Tri::State::do_save() {
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;
}
RenderTexture2D saveTexture = LoadRenderTexture(width, height);
draw_to_target(&saveTexture);
saveTexture.display();
sf::Image saveImage = saveTexture.getTexture().copyToImage();
std::string filename = std::string(saveFilenameBuffer.data());
if(saveImage.saveToFile(filename)) {
Image saveImage = GetTextureData(saveTexture.texture);
UnloadRenderTexture(saveTexture);
if(ExportImage(saveImage, saveFilenameBuffer.data())) {
#ifndef NDEBUG
printf("Saved to \"%s\"\n", filename.c_str());
printf("Saved to \"%s\"\n", saveFilenameBuffer.data());
#endif
failedMessage.clear();
UnloadImage(saveImage);
return true;
} else {
#ifndef NDEBUG
printf("ERROR: Failed to save \"%s\"\n", filename.c_str());
printf("ERROR: Failed to save \"%s\"\n", saveFilenameBuffer.data());
#endif
failedMessage = std::string("Failed to save (does the name end in \".png\"?)");
UnloadImage(saveImage);
return false;
}
}
std::string_view Tri::State::failed_message() const {
const std::string& Tri::State::failed_message() const {
return failedMessage;
}
@ -439,38 +457,35 @@ void Tri::State::close_bg_color_picker() {
bool Tri::State::change_width_height() {
std::bitset<2> warnings;
if(inputWidthHeight[0] < 0 || inputWidthHeight[1] < 0) {
if(inputWidth < 0 || inputHeight < 0) {
failedMessage = "Width or Height cannot be less than 0";
return false;
}
if(inputWidthHeight[0] < 200) {
inputWidthHeight[0] = 200;
warnings.set(F_DISPLAY_HELP);
if(inputWidth < 800) {
inputWidth = 800;
warnings.set(0);
}
if(inputWidthHeight[1] < 150) {
inputWidthHeight[1] = 150;
warnings.set(F_IS_RUNNING);
if(inputHeight < 600) {
inputHeight = 600;
warnings.set(1);
}
if(warnings.test(0) && warnings.test(1)) {
set_notification_text("Width set to 200\nHeight set to 150");
set_notification_text("Width set to 800\nHeight set to 600");
} else if(warnings.test(0)) {
set_notification_text("Width set to 200");
set_notification_text("Width set to 800");
} else if(warnings.test(1)) {
set_notification_text("Height set to 150");
set_notification_text("Height set to 600");
}
this->width = inputWidthHeight[0];
this->height = inputWidthHeight[1];
this->width = inputWidth;
this->height = inputHeight;
window.setSize({this->width, this->height});
sf::View newView(
sf::Vector2f(width / 2.0f, height / 2.0f),
sf::Vector2f(width, height));
window.setView(newView);
SetWindowSize(this->width, this->height);
UnloadRenderTexture(drawCache);
drawCache = LoadRenderTexture(this->width, this->height);
drawCache.create(width, height);
drawCacheSprite.setTexture(drawCache.getTexture(), true);
flags.set(F_DRAW_CACHE_DIRTY);
currentTri_state = CurrentState::NONE;
@ -478,10 +493,6 @@ 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() {
flags.reset(F_DISPLAY_CHANGE_SIZE);
}
@ -490,21 +501,40 @@ float Tri::State::get_pi() const {
return pi;
}
float* Tri::State::get_selected_tri_color() {
tris.at(selectedTri).setFillColor(sf::Color(
std::array<float, 4>& Tri::State::get_selected_tri_color() {
tris.at(selectedTri).fillColor = 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])));
(unsigned char)(255.0f * selectedTriColor[3])};
return selectedTriColor;
}
void Tri::State::close_selected_tri_mode() {
tris.at(selectedTri).setFillColor(sf::Color(
tris.at(selectedTri).fillColor = 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])));
(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;
}

55
src/state.hpp
View File

@ -7,8 +7,10 @@
#include <vector>
#include <array>
#include <SFML/System.hpp>
#include <SFML/Graphics.hpp>
#include "glm/glm.hpp"
#include "triangle.hpp"
#include "circle.hpp"
namespace Tri {
class State {
@ -40,47 +42,44 @@ namespace Tri {
BitsetType flags;
unsigned int width;
unsigned int height;
const sf::Time dt;
float dt;
float notification_alpha;
typedef std::array<char, 256> NotificationBufferType;
NotificationBufferType notification_text;
typedef std::array<char, 256> NBufferType;
NBufferType notification_text;
sf::RenderWindow window;
std::vector<sf::ConvexShape> tris;
std::vector<Triangle> tris;
unsigned int trisIndex;
sf::Vector2f currentTri[3];
std::array<glm::vec2, 3> currentTri;
CurrentState currentTri_state;
CurrentState currentTri_maxState;
sf::CircleShape pointCircle;
Circle pointCircle;
sf::Event event;
float colorPickerColor[4];
float bgColorPickerColor[3];
sf::Color bgColor;
std::array<float, 4> colorPickerColor;
std::array<float, 3> bgColorPickerColor;
Color bgColor;
typedef std::array<char, 256> FilenameBufferType;
FilenameBufferType saveFilenameBuffer;
std::string failedMessage;
sf::RenderTexture drawCache;
sf::Sprite drawCacheSprite;
int inputWidthHeight[2];
RenderTexture2D drawCache;
const float pi;
unsigned int selectedTri;
float selectedTriColor[4];
std::array<float, 4> selectedTriColor;
float selectedTriBlinkTimer;
int inputWidth;
int inputHeight;
public:
void handle_events();
void update();
void draw();
private:
void draw_to_target(sf::RenderTarget *target);
void draw_to_target(RenderTexture2D *target);
public:
unsigned int get_width() const;
@ -95,12 +94,12 @@ namespace Tri {
void set_notification_text(const char *text);
public:
float* get_color();
float* get_bg_color();
std::array<float, 4>& get_color();
std::array<float, 3>& get_bg_color();
FilenameBufferType* get_save_filename_buffer();
bool do_save();
std::string_view failed_message() const;
const std::string& failed_message() const;
void close_save();
private:
@ -113,14 +112,20 @@ 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;
float* get_selected_tri_color();
std::array<float, 4>& get_selected_tri_color();
void close_selected_tri_mode();
private:
bool check_draw_cache();
public:
int* get_input_width();
int* get_input_height();
};
}

63
src/triangle.cpp Normal file
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@ -0,0 +1,63 @@
#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;
}

29
src/triangle.hpp Normal file
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@ -0,0 +1,29 @@
#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

21
src/unittest/test_helpers.cpp
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@ -1,18 +1,17 @@
#include "catch.hpp"
#include <SFML/Graphics.hpp>
#include "helpers.hpp"
#include "triangle.hpp"
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});
Tri::Triangle triangle({{
{0.0f, 10.0f},
{10.0f, 10.0f},
{10.0f, 0.0f}
}});
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);
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);
}

1
third_party/glm vendored Submodule

@ -0,0 +1 @@
Subproject commit ace16e47780dcef815294715237f51e9129b6eb3

1
third_party/imgui vendored

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

1
third_party/imgui-sfml vendored

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

1
third_party/raygui vendored Submodule

@ -0,0 +1 @@
Subproject commit 6b216626ec8486b98ec38ae307bfb2cf32f9efcc