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feat: add rotation function and add functions to cam.h

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This commit is contained in:
Loïc GUEZO
2025-08-29 21:52:25 +02:00
parent e056058ba3
commit 42b0d16593
2 changed files with 49 additions and 1 deletions
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42
src/cam.c
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@@ -60,3 +60,45 @@ Mat4f_t lookAt(Vec4f_t* eye, Vec4f_t* center, Vec4f_t* up)
return mat4f_from_array(m); return mat4f_from_array(m);
} }
Mat4f_t rotateX(float angle)
{
Mat4f_t r = mat4f_identity();
float c = cosf(angle);
float s = sinf(angle);
r.m[5] = c;
r.m[6] = -s;
r.m[9] = s;
r.m[10] = c;
return r;
}
Mat4f_t rotateY(float angle)
{
Mat4f_t r = mat4f_identity();
float c = cosf(angle);
float s = sinf(angle);
r.m[0] = c;
r.m[2] = s;
r.m[8] = -s;
r.m[10] = c;
return r;
}
Mat4f_t rotateZ(float angle)
{
Mat4f_t r = mat4f_identity();
float c = cosf(angle);
float s = sinf(angle);
r.m[0] = c;
r.m[1] = -s;
r.m[4] = s;
r.m[5] = c;
return r;
}

6
src/cam.h
View File

@@ -4,3 +4,9 @@
Mat4f_t perspCam(float fov, float asp, float near, float far); Mat4f_t perspCam(float fov, float asp, float near, float far);
Vec4f_t* normCoord_r(Vec4f_t* vec); Vec4f_t* normCoord_r(Vec4f_t* vec);
Vec4f_t* viewport_r(Vec4f_t* vec, float width, float height); Vec4f_t* viewport_r(Vec4f_t* vec, float width, float height);
Mat4f_t lookAt(Vec4f_t* eye, Vec4f_t* center, Vec4f_t* up);
Mat4f_t rotateX(float angle);
Mat4f_t rotateY(float angle);
Mat4f_t rotateZ(float angle);