void rebuildMatrices()
{
if (!needsRebuild)
{
return;
}
needsRebuild = false;
warp_Vector forward, up, right;
forward = warp_Vector.sub(lookat, pos);
if (Math.Abs(forward.x) < 0.001f && Math.Abs(forward.z) < 0.001f)
{
right = new warp_Vector(1f, 0f, 0f);
if (forward.y < 0)
{
up = new warp_Vector(0f, 0f, 1f);
}
else
{
up = new warp_Vector(0f, 0f, -1f);
}
}
else
{
up = new warp_Vector(0f, 1f, 0f);
right = warp_Vector.getNormal(up, forward);
up = warp_Vector.getNormal(forward, right);
}
forward.normalize();
normalmatrix = new warp_Matrix(right, up, forward);
if (rollfactor != 0)
{
normalmatrix.rotate(0, 0, rollfactor);
}
matrix = normalmatrix.getClone();
matrix.shift(pos.x, pos.y, pos.z);
matrix = matrix.inverse();
normalmatrix = normalmatrix.inverse();
if (isOrthographic)
{
projmatrix.m00 = screenwidth / orthoViewWidth;
projmatrix.m03 = halfscreenwidth;
projmatrix.m11 = -screenheight / orthoViewHeight;
projmatrix.m13 = halfscreenheight;
projmatrix.m22 = 1.0f;
}
else
{
float screenscale = (screenwidth < screenheight) ? screenwidth : screenheight;
projmatrix.m00 = screenscale / fovfact;
projmatrix.m03 = 0;
projmatrix.m11 = -screenscale / fovfact;
projmatrix.m13 = 0;
projmatrix.m22 = 1.0f;
}
matrix = warp_Matrix.multiply(projmatrix, matrix);
}
public void rotate(float dx, float dy, float dz)
{
matrix.rotate(dx, dy, dz);
normalmatrix.rotate(dx, dy, dz);
}