/// <summary>
/// Render to the provided instance of OpenGL.
/// </summary>
/// <param name="gl">The OpenGL instance.</param>
/// <param name="renderMode">The render mode.</param>
public override void Render(OpenGL gl, Core.RenderMode renderMode)
{
base.Render(gl, renderMode);
// Begin drawing a NURBS surface.
gl.BeginSurface(nurbsRenderer);
// Draw the surface.
gl.NurbsSurface(nurbsRenderer, // The internal nurbs object.
sKnots.Length, // Number of s-knots.
sKnots, // The s-knots themselves.
tKnots.Length, // The number of t-knots.
tKnots, // The t-knots themselves.
ControlPoints.Width * 3, // The size of a row of control points.
3, // The size of a control points.
ControlPoints.ToFloatArray(), // The control points.
ControlPoints.Width, // The order, i.e degree + 1.
ControlPoints.Height, // The order, i.e degree + 1.
OpenGL.GL_MAP2_VERTEX_3); // Type of data to generate.
// End the surface.
gl.EndSurface(nurbsRenderer);
// Draw the control points.
ControlPoints.Draw(gl, DrawControlPoints, DrawControlGrid);
}
/// <summary>
/// Render to the provided instance of OpenGL.
/// </summary>
/// <param name="gl">The OpenGL instance.</param>
/// <param name="renderMode">The render mode.</param>
public override void Render(OpenGL gl, RenderMode renderMode)
{
// Create the evaluator.
gl.Map1(OpenGL.GL_MAP1_VERTEX_3, // Use and produce 3D points.
0, // Low order value of 'u'.
1, // High order value of 'u'.
3, // Size (bytes) of a control point.
ControlPoints.Width, // Order (i.e degree plus one).
ControlPoints.ToFloatArray()); // The control points.
// Enable the type of evaluator we wish to use.
gl.Enable(OpenGL.GL_MAP1_VERTEX_3);
// Beging drawing a line strip.
gl.Begin(OpenGL.GL_LINE_STRIP);
// Now draw it.
for (int i = 0; i <= segments; i++)
{
gl.EvalCoord1((float)i / segments);
}
gl.End();
// Draw the control points.
ControlPoints.Draw(gl, DrawControlPoints, DrawControlGrid);
}
/// <summary>
/// Render to the provided instance of OpenGL.
/// </summary>
/// <param name="gl">The OpenGL instance.</param>
/// <param name="renderMode">The render mode.</param>
public override void Render(OpenGL gl, Core.RenderMode renderMode)
{
// Call the base.
base.Render(gl, renderMode);
// Begin drawing a NURBS curve.
gl.BeginCurve(nurbsRenderer);
// Draw the curve.
gl.NurbsCurve(nurbsRenderer, // The internal nurbs object.
knots.Length, // Number of knots.
knots, // The knots themselves.
3, // The size of a vertex.
ControlPoints.ToFloatArray(), // The control points.
ControlPoints.Width, // The order, i.e degree + 1.
OpenGL.GL_MAP1_VERTEX_3); // Type of data to generate.
// End the curve.
gl.EndCurve(nurbsRenderer);
// Draw the control points.
ControlPoints.Draw(gl, DrawControlPoints, DrawControlGrid);
}
/// <summary>
/// Render to the provided instance of OpenGL.
/// </summary>
/// <param name="gl">The OpenGL instance.</param>
/// <param name="renderMode">The render mode.</param>
public override void Render(OpenGL gl, RenderMode renderMode)
{
// Create the evaluator.
gl.Map2(OpenGL.GL_MAP2_VERTEX_3, // Use and produce 3D points.
0, // Low order value of 'u'.
1, // High order value of 'u'.
3, // Size (bytes) of a control point.
ControlPoints.Width, // Order (i.e degree plus one).
0, // Low order value of 'v'.
1, // High order value of 'v'
ControlPoints.Width * 3, // Size in bytes of a 'row' of points.
ControlPoints.Height, // Order (i.e degree plus one).
ControlPoints.ToFloatArray()); // The control points.
gl.Enable(OpenGL.GL_MAP2_VERTEX_3);
gl.Enable(OpenGL.GL_AUTO_NORMAL);
gl.MapGrid2(20, 0, 1, 20, 0, 1);
// Now draw it.
gl.EvalMesh2(OpenGL.GL_FILL, 0, 20, 0, 20);
// Draw the control points.
ControlPoints.Draw(gl, DrawControlPoints, DrawControlGrid);
}