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_GraphicsContextCreated(object sender, GraphicsControlEventArgs e)
{
GraphicsContext ctx = e.Context;
GraphicsSurface framebuffer = e.Framebuffer;
#if DEBUG
_GeometryClipmapObject = new GeometryClipmapObject(6, 7, _BlockUnit);
#else
_GeometryClipmapObject = new GeometryClipmapObject(9, 11, _BlockUnit);
#endif
string workingDir = Directory.GetCurrentDirectory();
_GeometryClipmapObject.SetTerrainElevationFactory(Path.Combine(workingDir, @"..\..\..\Data\Terrain.vrt"), 45.5, 10.5);
_GeometryClipmapScene = new SceneGraph();
_GeometryClipmapScene.AddChild(new SceneGraphCameraObject());
_GeometryClipmapScene.AddChild(_GeometryClipmapObject);
_GeometryClipmapScene.Create(ctx);
// Set projection
_GeometryClipmapScene.CurrentView.ProjectionMatrix = new PerspectiveProjectionMatrix(
_ViewFov / 16.0f * 9.0f,
(float)ClientSize.Width / (float)ClientSize.Height,
1.0f, _ViewDepth
);;
// Clear color
framebuffer.SetClearColor(new ColorRGBAF(0.0f, 0.0f, 0.0f));
}
private void GraphicsControl_GraphicsContextDestroying(object sender, GraphicsControlEventArgs e)
{
if (_Program != null)
{
_Program.Dispose();
}
if (_VertexArray != null)
{
_VertexArray.Dispose();
}
}
private void GraphicsControl_Draw(object sender, GraphicsControlEventArgs e)
{
GraphicsContext ctx = e.Context;
IGraphicsSurface fb = e.Framebuffer;
Gl.Viewport(0, 0, (int)fb.Width, (int)fb.Height);
Gl.Clear(ClearBufferMask.ColorBufferBit);
ctx.Bind(_Program);
_Program.SetUniform(ctx, "hal_ModelViewProjection", new OrthoProjectionMatrix(0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f));
_VertexArray.Draw(ctx, _Program);
}
private void SampleGraphicsControl_GraphicsContextCreated(object sender, GraphicsControlEventArgs e)
{
GraphicsContext ctx = e.Context;
GraphicsSurface framebuffer = e.Framebuffer;
// Create Newton program
_NewtonProgram = ShadersLibrary.Instance.CreateProgram("Newton");
_NewtonProgram.AddFeedbackVarying("hal_VertexPosition");
_NewtonProgram.AddFeedbackVarying("hal_VertexSpeed");
_NewtonProgram.AddFeedbackVarying("hal_VertexAcceleration");
_NewtonProgram.AddFeedbackVarying("hal_VertexMass");
_NewtonProgram.Create(ctx);
// Initialize first vertex array
NewtonVertex[] newtonArray = new NewtonVertex[VertexCount];
Random random = new Random();
for (int i = 0; i < newtonArray.Length; i++)
{
NewtonVertex newtonVertex = new NewtonVertex();
newtonVertex.Position = new Vertex3f(RandomNormalized(), RandomNormalized(), RandomNormalized());
newtonVertex.Speed = new Vertex3f(RandomNormalized(), RandomNormalized(), RandomNormalized());
newtonVertex.Acceleration = new Vertex3f();
newtonVertex.Mass = RandomNormalized();
newtonArray[i] = newtonVertex;
}
// Create vertex arrays
ArrayBufferObjectBase newtonVertexArrayBuffer1, newtonVertexArrayBuffer2;
_NewtonVertexArray1 = CreateVertexArray(newtonArray, out newtonVertexArrayBuffer1);
_NewtonVertexArray2 = CreateVertexArray(null, out newtonVertexArrayBuffer2);
_NewtonVertexArray1.SetTransformFeedback(CreateFeedbackBuffer(newtonVertexArrayBuffer2));
_NewtonVertexArray2.SetTransformFeedback(CreateFeedbackBuffer(newtonVertexArrayBuffer1));
_NewtonVertexArray1.Create(ctx);
_NewtonVertexArray2.Create(ctx);
// Starts from initialized buffer
_NewtonVertexArray = _NewtonVertexArray1;
// Clear color
framebuffer.SetClearColor(new ColorRGBAF(0.0f, 0.0f, 0.0f));
}
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();
}
