private void glControl1_Paint(object sender, PaintEventArgs e)
{
VisualisationParameters param = new VisualisationParameters();
param.angle = angle.Value;
param.length = length.Value * 0.1;
param.shortage = shortage.Value * 0.01;
param.shrinkage = shrinkage.Value * 0.01;
int index = resultList.SelectedIndex;
param.radius = System.Math.Max(0.03, index * generationStep.Value * 0.01);
string toInterpret = (iterations != null && index >= 0 && index < iterations.Count) ? iterations[index] : "";
mLSystemRenderer.Render(toInterpret, index, param);
glCanvas.SwapBuffers();
}
public void Render(string aLSInstance, int aGeneration, VisualisationParameters aParameters)
{
#region View setup ...
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
mCamera.SetupGLView();
GL.Light(LightName.Light0, LightParameter.Position, new Vector4(-50.0f, -50.0f, 150.0f, 1.0f));
GL.Light(LightName.Light1, LightParameter.Diffuse, new Color4(1.0f, 1.0f, 1.0f, 1.0f));
#endregion
GL.MatrixMode(MatrixMode.Modelview);
#region Render ground ...
GL.Color3(Color.Green);
GL.Begin(PrimitiveType.Quads);
GL.Normal3(0.0f, 0.0f, 1.0f);
GL.Vertex3(-10.0f, -10.0f, 0.0f);
GL.Vertex3(10.0f, -10.0f, 0.0f);
GL.Vertex3(10.0f, 10.0f, 0.0f);
GL.Vertex3(-10.0f, 10.0f, 0.0f);
GL.End();
#endregion
if (aLSInstance == null || aParameters == null) // exit if nothing to Render
{
return;
}
// Initialize parameter stack
Stack <VisualisationParameters> parameterStack = new Stack <VisualisationParameters>();
VisualisationParameters currentParameters = aParameters.Clone();
GL.Color3(Color.Khaki);
foreach (char v in aLSInstance)
{
switch (v)
{
case 'F':
ForwardStep(currentParameters.length, currentParameters.radius, currentParameters.radius * currentParameters.shrinkage);
currentParameters.length *= currentParameters.shortage;
currentParameters.radius *= currentParameters.shrinkage;
break;
case '+':
GL.Rotate(currentParameters.angle, 0.0f, 1.0f, 0.0f);
break;
case '-':
GL.Rotate(-currentParameters.angle, 0.0f, 1.0f, 0.0f);
break;
case '/':
GL.Rotate(90.0f, 0.0f, 0.0f, 1.0f);
break;
case '\\':
GL.Rotate(-90.0f, 0.0f, 0.0f, 1.0f);
break;
case '[': // Save current state to stack
GL.PushMatrix();
parameterStack.Push(currentParameters.Clone());
break;
case ']': // Restore state from stack
GL.PopMatrix();
currentParameters = parameterStack.Pop();
break;
}
}
}