/// <summary>
/// Render propeller in modern opengl.
/// </summary>
/// <returns></returns>
public static OutlineCubeNode Create(Texture texture)
{
var vs = new VertexShader(vertexCode);
var fs = new FragmentShader(fragmentCode);
var provider = new ShaderArray(vs, fs);
var map = new AttributeMap();
map.Add(inPosition, TexturedCubeModel.strPosition);
map.Add(inUV, TexturedCubeModel.strUV);
var builder = new RenderMethodBuilder(provider, map);
var node = new OutlineCubeNode(new TexturedCubeModel(), TexturedCubeModel.strPosition, builder);
node.texture = texture;
node.Initialize();
return(node);
}
private SceneNodeBase GetRootElement()
{
// demo 1:
//return StencilTestNode.Create();
// demo 2:
//var quaterNode = QuaterNode.Create();
//var bottleNode = KleinBottleNode.Create(new KleinBottleModel());
//bottleNode.Scale = new vec3(1, 1, 1) * 0.1f;
//var group = new HowStencilTestWorkNode();
//group.Children.Add(quaterNode);
//group.Children.Add(bottleNode);
//return group;
// demo 3:
var clearStencilNode = ClearStencilNode.Create(); // this helps clear stencil buffer because glClear(GL_STENCIL_BUFFER_BIT); doesn't work.
string folder = System.Windows.Forms.Application.StartupPath;
var bitmap = new Bitmap(System.IO.Path.Combine(folder, @"Lenna.png"));
bitmap.RotateFlip(RotateFlipType.Rotate180FlipX);
var texture = new Texture(new TexImageBitmap(bitmap));
texture.BuiltInSampler.Add(new TexParameteri(TexParameter.PropertyName.TextureWrapS, (int)GL.GL_REPEAT));
texture.BuiltInSampler.Add(new TexParameteri(TexParameter.PropertyName.TextureWrapT, (int)GL.GL_REPEAT));
texture.BuiltInSampler.Add(new TexParameteri(TexParameter.PropertyName.TextureWrapR, (int)GL.GL_REPEAT));
texture.BuiltInSampler.Add(new TexParameteri(TexParameter.PropertyName.TextureMinFilter, (int)GL.GL_LINEAR));
texture.BuiltInSampler.Add(new TexParameteri(TexParameter.PropertyName.TextureMagFilter, (int)GL.GL_LINEAR));
texture.Initialize();
bitmap.Dispose();
var group = new GroupNode(clearStencilNode);
for (int x = 0; x < 3; x++)
{
for (int z = 0; z < 3; z++)
{
var outlineCubeNode = OutlineCubeNode.Create(texture);
outlineCubeNode.Scale = new vec3(1, 1, 1) * 0.6f;
outlineCubeNode.WorldPosition = new vec3(x - 1, 0, z - 1);
group.Children.Add(outlineCubeNode);
}
}
return(group);
}
void winGLCanvas1_MouseMove(object sender, MouseEventArgs e)
{
int x = e.X;
int y = this.winGLCanvas1.Height - e.Y - 1;
if (x < 0 || this.winGLCanvas1.Width <= x)
{
return;
}
if (y < 0 || this.winGLCanvas1.Height <= y)
{
return;
}
var pickedGeometry = this.pickingAction.Pick(x, y, true, true, false);
var lastNode = this.lastPickedNode as OutlineCubeNode;
this.lastPickedNode = null;// we will pick again.
OutlineCubeNode currentNode = null;
if (pickedGeometry != null)
{
currentNode = pickedGeometry.FromRenderer as OutlineCubeNode;
}
if (lastNode != currentNode)
{
if (lastNode != null)
{
lastNode.DisplayOutline = false;
}
if (currentNode != null)
{
currentNode.DisplayOutline = true;
}
}
this.lastPickedNode = currentNode;
this.lblState.Text = string.Format("picked: {0}", this.lastPickedNode);
}