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Add Scale Mat4 creation function

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Also added some relevant UnitTests.
This commit is contained in:
Stephen Seo 2024-05-06 11:30:33 +09:00
parent a0b41ba274
commit e0bd54742d
3 changed files with 49 additions and 0 deletions
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5
src/sc_sacd.cpp
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@ -546,6 +546,11 @@ SC_SACD_Mat4 SC_SACD_Translate_Mat4(float x, float y, float z) {
0.0F, 0.0F, 1.0F, z, 0.0F, 0.0F, 0.0F, 1.0F};
}
SC_SACD_Mat4 SC_SACD_Scale_Mat4(float x, float y, float z) {
return SC_SACD_Mat4{x, 0.0F, 0.0F, 0.0F, 0.0F, y, 0.0F, 0.0F,
0.0F, 0.0F, z, 0.0F, 0.0F, 0.0F, 0.0F, 1.0F};
}
SC_SACD_Vec3 SC_SACD_Closest_Point_Dir_Normalized(const SC_SACD_Vec3 *pos,
const SC_SACD_Vec3 *dir,
const SC_SACD_Vec3 *point) {

2
src/sc_sacd.h
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@ -119,6 +119,8 @@ SC_SACD_EXPORT SC_SACD_Mat4 SC_SACD_Rotation_Mat4_ZAxis(float z_radians);
SC_SACD_EXPORT SC_SACD_Mat4 SC_SACD_Translate_Mat4(float x, float y, float z);
SC_SACD_EXPORT SC_SACD_Mat4 SC_SACD_Scale_Mat4(float x, float y, float z);
/// This variant of Closest_Point expects "dir" to be a unit vector.
SC_SACD_EXPORT SC_SACD_Vec3 SC_SACD_Closest_Point_Dir_Normalized(
const SC_SACD_Vec3 *pos, const SC_SACD_Vec3 *dir,

42
src/test.cpp
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@ -591,6 +591,48 @@ int main() {
CHECK_FALSE(SC_SACD_Generic_Box_Collision(&a, &b));
}
// Box with Scale Mat4.
{
SC_SACD_Generic_Box a = SC_SACD_Generic_Box_Default();
SC_SACD_Generic_Box b = SC_SACD_Generic_Box_Default();
a.x = 1.1F;
b.x = -1.1F;
CHECK_FALSE(SC_SACD_Generic_Box_Collision(&a, &b));
a.transform = SC_SACD_Scale_Mat4(2.0F, 1.0F, 1.0F);
CHECK_TRUE(SC_SACD_Generic_Box_Collision(&a, &b));
a.transform = SC_SACD_Scale_Mat4(-2.0F, 1.0F, 1.0F);
CHECK_TRUE(SC_SACD_Generic_Box_Collision(&a, &b));
a.x = 0.0F;
b.x = 0.0F;
a.y = 1.1F;
b.y = -1.1F;
a.transform = SC_SACD_Mat4_Identity();
CHECK_FALSE(SC_SACD_Generic_Box_Collision(&a, &b));
a.transform = SC_SACD_Scale_Mat4(1.0F, 2.0F, 1.0F);
CHECK_TRUE(SC_SACD_Generic_Box_Collision(&a, &b));
a.transform = SC_SACD_Scale_Mat4(1.0F, -2.0F, 1.0F);
CHECK_TRUE(SC_SACD_Generic_Box_Collision(&a, &b));
a.y = 0.0F;
b.y = 0.0F;
a.z = 1.1F;
b.z = -1.1F;
a.transform = SC_SACD_Mat4_Identity();
CHECK_FALSE(SC_SACD_Generic_Box_Collision(&a, &b));
a.transform = SC_SACD_Scale_Mat4(1.0F, 1.0F, 2.0F);
CHECK_TRUE(SC_SACD_Generic_Box_Collision(&a, &b));
a.transform = SC_SACD_Scale_Mat4(1.0F, 1.0F, -2.0F);
CHECK_TRUE(SC_SACD_Generic_Box_Collision(&a, &b));
}
std::cout << "Checks checked: " << checks_checked << '\n'
<< "Checks passed: " << checks_passed << '\n';