// guess ;)
void RotateVertexX(TVector3D *pInput, TVector3D *pOutput, int Angle)
{
float tempy;
TVector3D Out;
tempy = pInput->y * FCOS (Angle) - pInput->z * FSIN (Angle);
Out.z = pInput->y * FSIN (Angle) + pInput->z * FCOS (Angle);
Out.x = pInput->x;
Out.y = tempy;
*pOutput = Out;
}
void RotateVertexZ(TVector3D *pInput, TVector3D *pOutput, int Angle)
{
float tempx;
TVector3D Out;
tempx = (pInput->x * FCOS (Angle) - pInput->y * FSIN (Angle));
Out.y = (pInput->x * FSIN (Angle) + pInput->y * FCOS (Angle));
Out.x = tempx;
Out.z = pInput->z;
*pOutput = Out;
}
void MIsss_Proj(float *p, int deg, float aspect, float znear, float zfar) {
float tanparam = FSIN(deg) / FCOS(deg);
float t = (float)(1.0 / tanparam);
p[0] = t / aspect;
p[1] = 0;
p[2] = 0;
p[3] = 0;
p[4] = 0;
p[5] = t;
p[6] = 0;
p[7] = 0;
p[8] = 0;
p[9] = 0;
p[10] = (zfar + znear) / (znear - zfar);
p[11] = -1;
p[12] = 0;
p[13] = 0;
p[14] = (2 * zfar * znear) / (znear - zfar);
p[15] = 0;
}