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add ortho matrix

v1
Brett 2023-02-15 00:41:06 -05:00
parent 2b203b086d
commit 596c75dc6f
1 changed files with 14 additions and 0 deletions
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14
include/blt/std/math.h
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@ -539,6 +539,20 @@ namespace blt {
return perspectiveMat4x4;
}
static inline mat4x4 ortho(float left, float right, float top, float bottom, float near, float far){
mat4x4 perspectiveMat4x4 {emptyMatrix};
perspectiveMat4x4.m00(2/(right - left));
perspectiveMat4x4.m11(2/(top-bottom));
perspectiveMat4x4.m22(2/(far-near));
perspectiveMat4x4.m33(1);
perspectiveMat4x4.m03(-(right + left) / (right - left));
perspectiveMat4x4.m13(-(top + bottom) / (top - bottom));
perspectiveMat4x4.m23(-(far + near) / (far - near));
return perspectiveMat4x4;
}
// inline std::ostream& operator<<(std::ostream& out, const mat4x4& v) {
// return out << "\rMatrix4x4{" << v.m00() << ", " << v.m01() << ", " << v.m02() << ", " << v.m03() << "} \n"\
// << " {" << v.m10() << ", " << v.m11() << ", " << v.m12() << ", " << v.m13() << "} \n"\