private void SampleGraphicsControl_Render(object sender, GraphicsControlEventArgs e)
{
GraphicsContext ctx = e.Context;
GraphicsSurface framebuffer = e.Framebuffer;
if (_AnimationBegin == DateTime.MinValue)
{
_AnimationBegin = DateTime.UtcNow;
}
PerspectiveProjectionMatrix matrixProjection = new PerspectiveProjectionMatrix();
Matrix4x4 matrixView;
// Set projection
matrixProjection.SetPerspective(60.0f, (float)ClientSize.Width / (float)ClientSize.Height, 1.0f, 1000.0f);
// Set view
ModelMatrix matrixViewModel = new ModelMatrix();
matrixViewModel.RotateX(_ViewElevation);
matrixViewModel.RotateY(_ViewAzimuth);
matrixViewModel.Translate(0.0f, 0.0f, _ViewDistance);
matrixView = matrixViewModel.GetInverseMatrix();
_NewtonProgram.Bind(ctx);
_NewtonProgram.SetUniform(ctx, "hal_ModelViewProjection", matrixProjection * matrixView);
_NewtonProgram.SetUniform(ctx, "hal_FrameTimeInterval", (float)(DateTime.UtcNow - _AnimationBegin).TotalSeconds);
_NewtonVertexArray.Draw(ctx, _NewtonProgram);
SwapNewtonVertexArrays();
// Issue another rendering
SampleGraphicsControl.Invalidate();
}
private void SampleGraphicsControl_MouseMove(object sender, MouseEventArgs e)
{
if ((e.Button & MouseButtons.Left) != 0)
{
Point delta = e.Location - new Size(_MouseCursor);
float xDelta = (float)delta.X / (float)ClientSize.Width;
float yDelta = (float)delta.Y / (float)ClientSize.Height;
_ViewAzimuth -= xDelta * 180.0f;
_ViewElevation -= yDelta * 90.0f;
_MouseCursor = e.Location;
SampleGraphicsControl.Invalidate();
}
}
private void SampleGraphicsControl_Render(object sender, GraphicsControlEventArgs e)
{
GraphicsContext ctx = e.Context;
GraphicsSurface framebuffer = e.Framebuffer;
// Update position
KeyTimer_Tick();
// Define view
_GeometryClipmapScene.CurrentView.LocalModel.SetIdentity();
_GeometryClipmapScene.CurrentView.LocalModel.Translate(_ViewPosition);
_GeometryClipmapScene.CurrentView.LocalModel.RotateY(_ViewAzimuth);
_GeometryClipmapScene.CurrentView.LocalModel.RotateX(_ViewElevation);
// Draw geometry clipmap
_GeometryClipmapScene.Draw(ctx);
SampleGraphicsControl.Invalidate();
}
