public override void Draw(SceneGraph.Cameras.Camera camera = null)
{
var gl = OpenGL;
if (gl == null)
{
return;
}
// TODO: we must decide what to do about drawing - are
// cameras completely outside of the responsibility of the scene?
// If no camera has been provided, use the current one.
ScientificCamera currentCamera = this.CurrentCamera;
currentCamera.Project(gl, ECameraType.Ortho);
//gl.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
// Render the root element, this will then render the whole
// of the scene tree.
MyRenderElement(SceneContainer, gl, RenderMode.Design);
// TODO: Adding this code here re-enables textures- it should work without it but it
// doesn't, look into this.
//gl.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
//gl.Enable(OpenGL.GL_TEXTURE_2D);
gl.Flush();
}
/// <summary>
/// Draw the scene.
/// </summary>
/// <param name="renderMode">Use Render for normal rendering and HitTest for picking.</param>
/// <param name="camera">Keep this to null if <see cref="CurrentCamera"/> is already set up.</param>
public void Draw(RenderMode renderMode = RenderMode.Render, SceneGraph.Cameras.Camera camera = null)
{
var gl = OpenGL;
if (gl == null)
{
return;
}
// TODO: we must decide what to do about drawing - are
// cameras completely outside of the responsibility of the scene?
// If no camera has been provided, use the current one.
if (camera == null)
{
camera = CurrentCamera;
}
if (IsClear)
{
if (renderMode == RenderMode.HitTest)
{
// When picking on a position that no model exists,
// the picked color would be
// = 255
// + 255 << 8
// + 255 << 16
// + 255 << 24
// = 255
// + 65280
// + 16711680
// + 4278190080
// = 4294967295
// This makes it easier to determin whether we picked something or not.
gl.ClearColor(1, 1, 1, 1);
}
else
{
// Set the clear color.
float[] clear = (SharpGL.SceneGraph.GLColor)ClearColor;
gl.ClearColor(clear[0], clear[1], clear[2], clear[3]);
}
}
// Reproject.
if (camera != null)
{
camera.Project(gl);
}
if (IsClear)
{
// Clear.
gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT |
OpenGL.GL_STENCIL_BUFFER_BIT);
}
//gl.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
SharedStageInfo info = this.StageInfo;
info.Reset();
// Render the root element, this will then render the whole
// of the scene tree.
MyRenderElement(SceneContainer, gl, renderMode, info);
// TODO: Adding this code here re-enables textures- it should work without it but it
// doesn't, look into this.
//gl.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
//gl.Enable(OpenGL.GL_TEXTURE_2D);
gl.Flush();
}
