/// <summary>
/// To construct a mesh, we need to know the size and resolution.
/// We also set the texture as a convenience.
/// </summary>
/// <param name="boundary">The size on the XY plane. The value is not used.</param>
/// <param name="res">The resolution determines how many rows and columns of quads will be generated.</param>
/// <param name="texture">An optional texture object to be bound to the mesh.
/// Normalized texture coordinates will be generated whether a texture object is assigned or not.</param>
public XYAxesPointMesh(Vector3D boundary, Resolution res)
: base(BeginMode.Points)
{
fSize = boundary;
fResolution = res;
CreateMesh();
}
/// <summary>
/// To construct a mesh, we need to know the size and resolution.
/// We also set the texture as a convenience.
/// </summary>
/// <param name="boundary">The size on the XY plane. The value is not used.</param>
/// <param name="res">The resolution determines how many rows and columns of quads will be generated.</param>
/// <param name="texture">An optional texture object to be bound to the mesh.
/// Normalized texture coordinates will be generated whether a texture object is assigned or not.</param>
public XYAxesPointMesh(GraphicsInterface gi, Vector3D boundary, Resolution res, GLTexture texture)
: base(gi, BeginMode.Points)
{
fSize = boundary;
fResolution = res;
Texture = texture;
CreateMesh();
}
protected override void DrawBegin()
{
// Start with viewport covering whole window
GI.Viewport(0, 0, fViewWidth, fViewHeight);
// Create an orthographic view so we can draw
// using 2D coordinates and not really worry about the
// camera position
GI.MatrixMode(MatrixMode.Projection);
GI.LoadIdentity();
GI.Ortho(0, fViewWidth, 0, fViewHeight, -1.0, 1.0);
// Clear the color buffer to an unlikely color so
// that we can see where the drawing is NOT occuring
GI.Buffers.ColorBuffer.Color = new ColorRGBA(1, 0, 0, 1); ;
GI.Buffers.ColorBuffer.Clear();
// If the resolution of the mesh changed since the last time we were
// drawing, recreate the mesh using the newest dimensions.
if (fResolutionChanged)
{
Console.WriteLine("Block Size: {0}", fBlockSize);
fResolutionChanged = false;
fResolution = new Resolution(fVideoTexture.Width / fBlockSize, fVideoTexture.Height / fBlockSize);
fFaceMesh = new XYAxesMesh(fFaceSize, fResolution, fYTexture);
}
}
