private SceneNodeBase GetRootNode()
{
var group = new GroupNode();
{
const int length = 10;
var model = new PointsModel(length, length, length);
var node = PointsNode.Create(model, PointsModel.strPosition, PointsModel.strColor, model.GetSize());
group.Children.Add(node);
}
{
var axisNode = AxisNode.Create();
axisNode.Scale = new vec3(1, 1, 1) * 10;
group.Children.Add(axisNode);
}
return(group);
}
public static AxisNode Create()
{
// vertex buffer and index buffer.
var model = new AxisModel();
// vertex shader and fragment shader.
var vs = new VertexShader(vertexCode);
var fs = new FragmentShader(fragmentCode);
var array = new ShaderArray(vs, fs);
// which vertex buffer maps to which attribute in shader.
var map = new AttributeMap();
map.Add("inPosition", AxisModel.strPosition);
map.Add("inColor", AxisModel.strColor);
// build a render method.
var builder = new RenderMethodBuilder(array, map, new LineWidthSwitch(3));
// create node.
var node = new AxisNode(model, builder);
// initialize node.
node.Initialize();
return(node);
}
