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Optimize Transform::ToMatrix

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tovjemam 2025-08-30 12:34:06 +02:00
parent a2bef73191
commit e9883b8fb5
1 changed files with 28 additions and 5 deletions
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33
src/utils/transform.hpp
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@ -11,11 +11,34 @@ struct Transform
glm::mat4 ToMatrix() const glm::mat4 ToMatrix() const
{ {
// TODO: Optimize matrix construction float x = rotation.x;
glm::mat4 translation_mat = glm::translate(glm::mat4(1.0f), position); float y = rotation.y;
glm::mat4 rotation_mat = glm::mat4_cast(rotation); float z = rotation.z;
glm::mat4 scaling_mat = glm::scale(glm::mat4(1.0f), glm::vec3(scale)); float w = rotation.w;
return translation_mat * rotation_mat * scaling_mat;
float x2 = x + x;
float y2 = y + y;
float z2 = z + z;
float xx = x * x2;
float xy = x * y2;
float xz = x * z2;
float yy = y * y2;
float yz = y * z2;
float zz = z * z2;
float wx = w * x2;
float wy = w * y2;
float wz = w * z2;
float sx = scale;
float sy = scale;
float sz = scale;
return glm::mat4(
(1.0f - (yy + zz)) * sx, (xy + wz) * sx, (xz - wy) * sx, 0.0f,
(xy - wz) * sy, (1.0f - (xx + zz)) * sy, (yz + wx) * sy, 0.0f,
(xz + wy) * sz, (yz - wx) * sz, (1.0f - (xx + yy)) * sz, 0.0f,
position.x, position.y, position.z, 1.0f
);
} }
void SetAngles(const glm::vec3& angles_deg) void SetAngles(const glm::vec3& angles_deg)