/// <summary>
/// Help function to draw a single, texture quad on the screen
/// </summary>
/// <param name="left"></param>
/// <param name="right"></param>
/// <param name="top"></param>
/// <param name="bottom"></param>
/// <param name="shader"></param>
void DrawTexturedQuad(float left, float right, float top, float bottom, TexturedShader shader)
{
Vector2[] texCoords = new Vector2[]
{
new Vector2(0, 0),
new Vector2(1, 0),
new Vector2(1, 1),
new Vector2(0, 1)
};
Vector3[] positions = new Vector3[]
{
new Vector3(left, bottom, 0),
new Vector3(right, bottom, 0),
new Vector3(right, top, 0),
new Vector3(left, top, 0),
};
uint[] indices = new uint[]
{
0, 1, 2, 0, 2, 3
};
shader.SetIndices(indices);
shader.SetVertexPositions(positions);
shader.SetTextureCoordinates(texCoords);
shader.DrawElements(BeginMode.Triangles);
}
/// <summary>
/// Constructs the DiffusionRenderer to draw the editor's current frame. DiffusionRenderer
/// can only start drawing when OpenGL has finished loading.
/// </summary>
/// <param name="editorState">Used as a reference to draw the currently selected point</param>
/// <param name="pathsContainer">Used as a reference to draw all the paths in the current frame</param>
public DiffusionRenderer(RenderState renderState,
EditorState currentState, DiffusionBuffers buffers,
DefaultShader pointShader, TexturedShader imageShader, TexturedShader diffuseShader,
NormalShader lineShader, NormalShader endPointShader)
{
this.renderState = renderState;
this.currentState = currentState;
this.buffers = buffers;
this.pointShader = pointShader;
this.imageShader = imageShader;
this.diffuseShader = diffuseShader;
this.lineShader = lineShader;
this.endPointShader = endPointShader;
this.renderState.PropertyChanged += renderState_PropertyChanged;
}