private SceneObjectGeometry CreateSphere(string material)
{
SceneObjectGeometry sphereGeometry = new SceneObjectGeometry("Sphere");
sphereGeometry.ObjectState.DefineState(new CullFaceState(FrontFaceDirection.Ccw, CullFaceMode.Back));
sphereGeometry.ObjectState.DefineState(new TransformState());
sphereGeometry.LocalModelView = Matrix4x4f.Translated(0.0f, 4.0f, 0.0f);
sphereGeometry.VertexArray = VertexArrays.CreateSphere(4.0f, 32, 32);
ArrayBuffer <Vertex2f> texCoordBuffer = new ArrayBuffer <Vertex2f>();
texCoordBuffer.Create(sphereGeometry.VertexArray.ArrayLength);
sphereGeometry.VertexArray.SetArray(texCoordBuffer, VertexArraySemantic.TexCoord);
ArrayBuffer <Vertex3f> tanCoordBuffer = new ArrayBuffer <Vertex3f>();
tanCoordBuffer.Create(sphereGeometry.VertexArray.ArrayLength);
sphereGeometry.VertexArray.SetArray(tanCoordBuffer, VertexArraySemantic.Tangent);
ArrayBuffer <Vertex3f> bitanCoordBuffer = new ArrayBuffer <Vertex3f>();
bitanCoordBuffer.Create(sphereGeometry.VertexArray.ArrayLength);
sphereGeometry.VertexArray.SetArray(bitanCoordBuffer, VertexArraySemantic.Bitangent);
sphereGeometry.VertexArray.GenerateTexCoords(new VertexArrayTexGen.Sphere());
sphereGeometry.VertexArray.GenerateTangents();
sphereGeometry.ProgramTag = ShadersLibrary.Instance.CreateProgramTag("OpenGL.Standard+PhongFragment");
SetSphereMaterial(sphereGeometry, material);
return(sphereGeometry);
}
private void GlSurface_ContextCreated(object sender, GLSurfaceViewEventArgs e)
{
// Wrap GL context with GraphicsContext
_Context = new GraphicsContext(e.DeviceContext, e.RenderContext);
_CubeScene = new SceneGraph(SceneGraphFlags.None);
_CubeScene.SceneRoot = new SceneObjectGeometry();
_CubeScene.SceneRoot.ObjectState.DefineState(new DepthTestState(DepthFunction.Less));
_CubeScene.CurrentView = new SceneObjectCamera();
_CubeScene.SceneRoot.Link(_CubeScene.CurrentView);
SceneObjectGeometry geometry = new SceneObjectGeometry();
geometry.ProgramTag = ShadersLibrary.Instance.CreateProgramTag("OpenGL.Standard");
geometry.AddGeometry(VertexArrays.CreateSphere(3.0f, 8, 8));
_CubeScene.SceneRoot.Link(geometry);
_CubeScene.Create(_Context);
Gl.ClearColor(1.0f, 0.1f, 0.1f, 1.0f);
}