PerspectiveMatrixInverseZ()

glm::mat4 Spices::PerspectiveMatrixInverseZ	(	float	fov,
		float	nearPlane,
		float	aspectRatio )

Calculate Perspective Matrix(reverse z version).

Parameters

[in]	fov	.
[in]	nearPlane	.
[in]	aspectRatio	.

Returns

Returns Perspective Matrix(reverse z version).

Definition at line 127 of file Math.cpp.

    {
        const float tanHalfFovy = tan(glm::radians(fov) / 2.0f);
 
        glm::mat4 mat = glm::mat4{ 0.0f };
        mat[0][0] = 1.0f / (aspectRatio * tanHalfFovy);
        mat[1][1] = 1.0f / tanHalfFovy;
        mat[2][2] = 0.0f;
        mat[2][3] = 1.0f;
        mat[3][2] = nearPlane;
        
        return mat;
    }