/// <summary>
/// Method for raising <see cref="GraphicsContextDestroyed"/>
/// </summary>
/// <param name="args">
/// The <see cref="GraphicsControlEventArgs"/> that specify the event arguments.
/// </param>
protected void RaiseGraphicsContextDestroyed(GraphicsControlEventArgs args)
{
if (GraphicsContextDestroyed != null)
{
GraphicsContextDestroyed(this, args);
}
}
private void GraphicsControl_GraphicsContextCreated(object sender, OpenGL.GraphicsControlEventArgs e)
{
// Program
_Program = ShadersLibrary.Instance.CreateProgram("OpenGL.Standard+Color");
_Program.Create(e.Context);
// Position array buffer
ArrayBufferObject <Vertex2f> _ArrayPosition = new ArrayBufferObject <Vertex2f>(BufferObjectHint.StaticCpuDraw);
_ArrayPosition.Create(e.Context, new Vertex2f[] {
new Vertex2f(0.0f, 0.0f),
new Vertex2f(0.5f, 1.0f),
new Vertex2f(1.0f, 0.0f)
});
// Color array buffer
ArrayBufferObject <ColorRGBF> _ArrayColor = new ArrayBufferObject <ColorRGBF>(BufferObjectHint.StaticCpuDraw);
_ArrayColor.Create(e.Context, new ColorRGBF[] {
new ColorRGBF(1.0f, 0.0f, 0.0f),
new ColorRGBF(0.0f, 1.0f, 0.0f),
new ColorRGBF(0.0f, 0.0f, 1.0f)
});
// Vertex array
_VertexArray = new VertexArrayObject();
_VertexArray.SetArray(_ArrayPosition, VertexArraySemantic.Position);
_VertexArray.SetArray(_ArrayColor, VertexArraySemantic.Color);
_VertexArray.SetElementArray(PrimitiveType.Triangles, 0, 3);
_VertexArray.Create(e.Context);
}
/// <summary>
/// Method for raising <see cref="Render"/>
/// </summary>
/// <param name="args">
/// The <see cref="GraphicsControlEventArgs"/> that specify the event arguments.
/// </param>
protected void RaiseRenderEvent(GraphicsControlEventArgs args)
{
if (Render != null)
{
try {
Render(this, args);
} catch (Exception exception) {
sLog.Error("RenderControl.Render exception caught", exception);
}
}
}
/// <summary>
/// Method for raising <see cref="GraphicsContextCreated"/>
/// </summary>
/// <param name="args">
/// The <see cref="GraphicsControlEventArgs"/> that specify the event arguments.
/// </param>
protected void RaiseGraphicsContextCreated(GraphicsControlEventArgs args)
{
if (GraphicsContextCreated != null)
{
try {
GraphicsContextCreated(this, args);
} catch (Exception exception) {
sLog.Error("Unable to create resources.", exception);
}
}
}
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;
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();
}
/// <summary>
/// Method for raising <see cref="Render"/>
/// </summary>
/// <param name="args">
/// The <see cref="GraphicsControlEventArgs"/> that specify the event arguments.
/// </param>
protected void RaiseRenderEvent(GraphicsControlEventArgs args)
{
if (Render != null) {
try {
Render(this, args);
} catch (Exception exception) {
sLog.Error("RenderControl.Render exception caught", exception);
}
}
}
/// <summary>
/// Method for raising <see cref="GraphicsContextDestroyed"/>
/// </summary>
/// <param name="args">
/// The <see cref="GraphicsControlEventArgs"/> that specify the event arguments.
/// </param>
protected void RaiseGraphicsContextDestroyed(GraphicsControlEventArgs args)
{
if (GraphicsContextDestroyed != null)
GraphicsContextDestroyed(this, args);
}
/// <summary>
/// Method for raising <see cref="GraphicsContextCreated"/>
/// </summary>
/// <param name="args">
/// The <see cref="GraphicsControlEventArgs"/> that specify the event arguments.
/// </param>
protected void RaiseGraphicsContextCreated(GraphicsControlEventArgs args)
{
if (GraphicsContextCreated != null) {
try {
GraphicsContextCreated(this, args);
} catch (Exception exception) {
sLog.Error("Unable to create resources.", exception);
}
}
}