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);
}
/// <summary>
/// 根据<see cref="IndexBuffer"/>的具体类型获取一个<see cref="PickableRenderer"/>
/// </summary>
/// <param name="model"></param>
/// <param name="attributeMap"></param>
/// <param name="positionNameInIBufferable"></param>
/// <param name="switches"></param>
/// <returns></returns>
public static InnerPickableRenderer GetRenderer(
this IBufferable model,
AttributeMap attributeMap,
string positionNameInIBufferable,
params GLState[] switches)
{
if (model == null || attributeMap == null || string.IsNullOrEmpty(positionNameInIBufferable))
{
throw new ArgumentNullException();
}
AttributeMap map = null;
foreach (AttributeMap.NamePair item in attributeMap)
{
if (item.NameInIBufferable == positionNameInIBufferable)
{
map = new AttributeMap();
map.Add(item.VarNameInShader, item.NameInIBufferable);
break;
}
}
if (map == null)
{
throw new Exception(string.Format("No matching variable name in shader for [{0}]", positionNameInIBufferable));
}
if (model.UsesZeroIndexBuffer())
{
return(new ZeroIndexRenderer(model, PickingShaderHelper.GetShaderCodes(), map, positionNameInIBufferable, switches));
}
else
{
return(new OneIndexRenderer(model, PickingShaderHelper.GetShaderCodes(), map, positionNameInIBufferable, switches));
}
}
/// <summary>
/// Rendering something using GLSL shader and VBO(VAO).
/// </summary>
/// <param name="model">model data that can be transfermed into OpenGL Buffer's pointer.</param>
/// <param name="shaderCodes">All shader codes needed for this renderer.</param>
/// <param name="attributeMap">Mapping relations between 'in' variables in vertex shader in <paramref name="shaderCodes"/> and buffers in <paramref name="model"/>.</param>
///<param name="switches">OpenGL switches.</param>
private BoundingBoxRenderer(IBufferable model, ShaderCode[] shaderCodes,
AttributeMap attributeMap, params GLState[] switches)
: base(model, shaderCodes, attributeMap, switches)
{
this.BoundingBoxColor = Color.White;
}
/// <summary>
/// 支持"拾取"的渲染器
/// </summary>
/// <param name="model">一种渲染方式</param>
/// <param name="renderProgramProvider">各种类型的shader代码</param>
/// <param name="attributeMap">关联<paramref name="model"/>和<paramref name="shaderProgramProvider"/>中的属性</param>
/// <param name="positionNameInVertexShader">vertex shader种描述顶点位置信息的in变量的名字</param>
///<param name="switches"></param>
private TranslateRenderer(IBufferable model, IShaderProgramProvider renderProgramProvider,
AttributeMap attributeMap, string positionNameInVertexShader,
params GLState[] switches)
: base(model, renderProgramProvider, attributeMap, positionNameInVertexShader, switches)
{
}
private TextureRenderer(IBufferable model, ShaderCode[] shaderCodes,
AttributeMap attributeMap, string positionNameInIBufferable, params GLSwitch[] switches)
: base(model, shaderCodes, attributeMap, positionNameInIBufferable, switches)
{
}
private FlabellumRenderer(Flabellum model, IShaderProgramProvider shaderProgramProvider,
AttributeMap attributeMap, params GLState[] switches)
: base(model, shaderProgramProvider, attributeMap, switches)
{
this.ModelSize = model.GetModelSize();
}
/// <summary>
/// A smallest unit that can render somthing.
/// </summary>
/// <param name="programProvider"></param>
/// <param name="map"></param>
/// <param name="states"></param>
public RenderMethodBuilder(IShaderProgramProvider programProvider, AttributeMap map, params GLState[] states)
{
this.programProvider = programProvider;
this.map = map;
this.states = states;
}
/// <summary>
/// Rendering something using GLSL shader and VBO(VAO).
/// </summary>
/// <param name="model">model data that can be transfermed into OpenGL Buffer's pointer.</param>
/// <param name="shaderProgramProvider">All shader codes needed for this renderer.</param>
/// <param name="attributeMap">Mapping relations between 'in' variables in vertex shader in <paramref name="shaderProgramProvider"/> and buffers in <paramref name="model"/>.</param>
///<param name="switches">OpenGL switches.</param>
private BoundingBoxRenderer(IBufferable model, IShaderProgramProvider shaderProgramProvider,
AttributeMap attributeMap, params GLState[] switches)
: base(model, shaderProgramProvider, attributeMap, switches)
{
this.BoundingBoxColor = Color.White;
}
private TextureRenderer(IBufferable model, IShaderProgramProvider shaderProgramProvider,
AttributeMap attributeMap, string positionNameInIBufferable, params GLState[] switches)
: base(model, shaderProgramProvider, attributeMap, positionNameInIBufferable, switches)
{
}
