/// <summary>
/// Render teapot to framebuffer in modern opengl.
/// </summary>
/// <param name="model"></param>
/// <param name="position"></param>
/// <param name="normal"></param>
/// <param name="size"></param>
/// <returns></returns>
public static ShadowMappingNode Create(IBufferSource model, string position, string normal, vec3 size)
{
RenderMethodBuilder shadowBuilder, lightBuilder;
{
var vs = new VertexShader(shadowVertexCode);
var provider = new ShaderArray(vs);
var map = new AttributeMap();
map.Add(inPosition, position);
shadowBuilder = new RenderMethodBuilder(provider, map);
}
{
var vs = new VertexShader(lightVertexCode);
var fs = new FragmentShader(lightFragmentCode);
var provider = new ShaderArray(vs, fs);
var map = new AttributeMap();
map.Add(inPosition, position);
map.Add(inNormal, normal);
lightBuilder = new RenderMethodBuilder(provider, map);
}
var node = new ShadowMappingNode(model, position, shadowBuilder, lightBuilder);
node.ModelSize = size;
node.Initialize();
return(node);
}
private SceneNodeBase GetRootElement()
{
var group = new GroupNode();
var lightPosition = new vec3(0, 3, 5) * 2;
var localLight = new SpotLight(lightPosition, new vec3(0, 0, 0), 60, 1, 500)
{
Color = new vec3(1, 1, 1),
};
{
var lightContainer = new LightContainerNode(localLight);
{
var model = new Teapot();
var node = ShadowMappingNode.Create(model, Teapot.strPosition, Teapot.strNormal, model.GetModelSize());
node.Diffuse = Color.Gold.ToVec3();
node.RotateSpeed = 1;
lightContainer.Children.Add(node);
}
{
var model = new GroundModel();
var node = ShadowMappingNode.Create(model, GroundModel.strPosition, GroundModel.strNormal, model.ModelSize);
node.Diffuse = Color.AliceBlue.ToVec3();
node.Scale *= 30;
node.WorldPosition = new vec3(0, -3, 0);
lightContainer.Children.Add(node);
}
group.Children.Add(lightContainer);
}
{
var rectangle = RectangleNode.Create();
rectangle.TextureSource = localLight;
rectangle.RotationAngle = 45;
rectangle.WorldPosition = new vec3(5, 1, 5) * 3;
rectangle.Scale *= 4;
group.Children.Add(rectangle);
}
{
var cube = LightPostionNode.Create();
cube.WorldPosition = lightPosition;
cube.SetLight(localLight);
group.Children.Add(cube);
}
return(group);
}
private SceneNodeBase GetRootElement()
{
var group = new GroupNode();
{
var model = new Teapot();
var node = ShadowMappingNode.Create(model, Teapot.strPosition, Teapot.strNormal, model.GetModelSize());
node.Color = Color.Gold.ToVec3();
node.RotateSpeed = 1;
group.Children.Add(node);
}
{
var model = new GroundModel();
var node = ShadowMappingNode.Create(model, GroundModel.strPosition, GroundModel.strNormal, model.ModelSize);
node.Color = Color.White.ToVec3();
node.Scale *= 100;
node.WorldPosition = new vec3(0, -3, 0);
group.Children.Add(node);
}
return(group);
}
