AstralTech/Gryphn-Utils
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added some more utils stuff

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This commit is contained in:
Greg Wells
2025-06-10 15:50:17 -04:00
parent 04a2f55c4c
commit 1331f60fc7
4 changed files with 41 additions and 6 deletions
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34
utils/math/gryphn_mat4.h
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@@ -1,11 +1,12 @@
#pragma once
#include "math.h"
typedef struct gnMat4x4 {
float mat[4][4];
} gnMat4x4;
typedef gnMat4x4 gnMat4;
gnMat4x4 gnIdentity() {
static inline const gnMat4x4 gnIdentity() {
return (gnMat4x4){
.mat = {
{ 1.0f, 0.0f, 0.0f, 0.0f },
@@ -15,3 +16,34 @@ gnMat4x4 gnIdentity() {
}
};
}
static inline const gnMat4x4 gnOrthographic(
float left, float right, float top, float bottom, float near, float far
) {
return (gnMat4x4){
.mat = {
{ (2)/(right-left), 0.0f, 0.0f, -((right+left)/(right-left)) },
{ 0.0f, 2/(top-bottom), 0.0f, -((top+bottom)/(top-bottom)) },
{ 0.0f, 0.0f, -2/(far-near), -((far+near)/(far-near)) },
{ 0.0f, 0.0f, 0.0f, 1.0f }
}
};
}
static inline const gnMat4x4 gnProjection(
float fov, float aspect, float near, float far
) {
return (gnMat4x4){
.mat = {
{ 1/(aspect * tan(fov/2)), 0.0f, 0.0f, 0.0f },
{ 0.0f, 1/tan(fov/2), 0.0f, 0.0f },
{ 0.0f, 0.0f, -((far+near)/(far-near)), -((2*far*near)/(far-near)) },
{ 0.0f, 0.0f, -1.0f, 1.0f }
// { 1/(aspect * tan(fov/2)), 0.0f, 0.0f, 0.0f },
// { 0.0f, 1/tan(fov/2), 0.0f, 0.0f },
// { 0.0f, 0.0f, -((far+near)/(far-near)), -((2*far*near)/(far-near)) },
// { 0.0f, 0.0f, -1.0f, 0.0f }
}
};
}