// here we update translations, scaling and rotations
protected virtual void ApplyMatrix()
{
if (this.noMatrix)
{
return;
}
#if __SHARPDX__
Matrix4 m = Matrix4.Translation(-this.pivot.X, -this.pivot.Y, 0) *
Matrix4.Scaling(this.scale.X, this.scale.Y, 1) *
Matrix4.RotationZ(this.rotation) *
Matrix4.Translation(this.position.X, this.position.Y, 0);
#else
// WARNING !!! OpenTK uses row-major while OpenGL uses column-major
Matrix4 m =
Matrix4.CreateTranslation(-this.pivot.X, -this.pivot.Y, 0) *
#if !__MOBILE__
Matrix4.CreateScale(this.scale.X, this.scale.Y, 1) *
#else
Matrix4.Scale(this.scale.X, this.scale.Y, 1) *
#endif
Matrix4.CreateRotationZ(this.rotation) *
// here we do not re-add the pivot, so translation is pivot based too
Matrix4.CreateTranslation(this.position.X, this.position.Y, 0);
#endif
Matrix4 projectionMatrix = Window.Current.ProjectionMatrix;
if (this.Camera != null)
{
m *= this.Camera.Matrix();
if (this.Camera.HasProjection)
{
projectionMatrix = this.Camera.ProjectionMatrix();
}
}
else if (Window.Current.CurrentCamera != null)
{
m *= Window.Current.CurrentCamera.Matrix();
if (Window.Current.CurrentCamera.HasProjection)
{
projectionMatrix = Window.Current.CurrentCamera.ProjectionMatrix();
}
}
Matrix4 mvp = m * projectionMatrix;
#if __SHARPDX__
// transpose the matrix for DirectX
mvp.Transpose();
#endif
// pass the matrix to the shader
this.shader.SetUniform("mvp", mvp);
}