/// <summary>
/// This function draws all of the objects in the scene (i.e. every quadric
/// in the quadrics arraylist etc).
/// </summary>
public virtual void Draw()
{
// Create a performance monitor.
PerformanceMonitor performance = new PerformanceMonitor();
performance.Monitor("Clearing buffers");
// Set the clear color.
float[] clear = clearColour;
gl.ClearColor(clear[0], clear[1], clear[2], clear[3]);
// TODO: this is big overhead- one should only reproject when the camera moves.
if (currentCamera != null)
{
currentCamera.Project(gl);
}
// Clear.
gl.Clear(OpenGL.COLOR_BUFFER_BIT | OpenGL.DEPTH_BUFFER_BIT |
OpenGL.STENCIL_BUFFER_BIT);
gl.BindTexture(OpenGL.TEXTURE_2D, 0);
gl.Enable(OpenGL.TEXTURE_2D);
gl.Enable(OpenGL.LIGHTING);
if (designMode)
{
performance.Monitor("Drawing Stock Scene");
gl.StockDrawing.DrawGrid(gl);
}
performance.Monitor("Setting and drawing Lights");
foreach (Light light in lights)
{
// Set the lights properties into our OpenGL.
light.Set(gl);
// Draw the light into OpenGL.
if (designMode)
{
light.Draw(gl);
}
}
performance.Monitor("Drawing Custom Objects");
// TODO: Adding this code here re-enables textures- it should work without it but it
// doesn't, look into this.
foreach (SceneObject ob in sceneObjects)
{
ob.Draw(gl);
}
performance.Monitor("Drawing Quadrics");
// TODO: Adding this code here re-enables textures- it should work without it but it
// doesn't, look into this.
foreach (Quadric quad in quadrics)
{
quad.Draw(gl);
}
performance.Monitor("Drawing Evaluators");
// TODO: Adding this code here re-enables textures- it should work without it but it
// doesn't, look into this.
foreach (Evaluator evaluator in evaluators)
{
evaluator.Draw(gl);
}
performance.Monitor("Drawing Cameras");
foreach (Camera cam in cameras)
{
if (designMode)
{
cam.Draw(gl);
}
}
performance.Monitor("Drawing Polygons");
// TODO: Adding this code here re-enables textures- it should work without it but it
// doesn't, look into this.
gl.BindTexture(OpenGL.TEXTURE_2D, 0);
gl.Enable(OpenGL.TEXTURE_2D);
foreach (Polygon poly in polygons)
{
// Draw the polygon into OpenGL.
poly.Draw(gl);
if (poly.CastsShadow)
{
poly.CastShadow(gl, lights);
}
}
gl.Flush();
performance.EndMonitor();
if (drawPerformance)
{
performance.Draw(gl.GDIGraphics);
}
}
