public void Draw()
{
if (VertexArray.Dimension == 2)
{
// cannot see the opposite side
GL.Enable(EnableCap.CullFace);
GL.CullFace(CullFaceMode.Back);
}
else
{
GL.Disable(EnableCap.CullFace);
}
int minLayer;
int maxLayer;
{
if (DrawParts.Count > 0)
{
minLayer = DrawParts[0].Layer;
maxLayer = minLayer;
}
else
{
minLayer = 0; maxLayer = 0;
}
for (int idp = 1; idp < DrawParts.Count; idp++)
{
int layer = DrawParts[idp].Layer;
minLayer = (layer < minLayer) ? layer : minLayer;
maxLayer = (layer > maxLayer) ? layer : maxLayer;
}
}
double layerHeight = 1.0 / (maxLayer - minLayer + 1);
if (ColorArray == null)
{
// color is assigned to face
GL.LineWidth(3);
GL.EnableClientState(ArrayCap.VertexArray);
GL.VertexPointer((int)VertexArray.Dimension, VertexPointerType.Double,
0, VertexArray.VertexCoordArray);
if (NormalArray != null && GL.IsEnabled(EnableCap.Lighting))
{
GL.EnableClientState(ArrayCap.NormalArray);
GL.NormalPointer(NormalPointerType.Double, 0, NormalArray);
float[] shine = { 0, 0, 0, 0 };
GL.Material(MaterialFace.FrontAndBack, MaterialParameter.Specular, shine);
GL.Material(MaterialFace.FrontAndBack, MaterialParameter.Shininess, 20.0f);
}
if (UVArray != null && GL.IsEnabled(EnableCap.Texture2D))
{
GL.EnableClientState(ArrayCap.TextureCoordArray);
GL.TexCoordPointer(2, TexCoordPointerType.Double, 0, UVArray);
GL.MatrixMode(MatrixMode.Texture);
GL.LoadIdentity();
GL.Translate(-TexCentX, -TexCentY, 0.0);
GL.MatrixMode(MatrixMode.Modelview);
}
for (int idp = 0; idp < DrawParts.Count; idp++)
{
FaceFieldDrawPart dp = DrawParts[idp];
if (dp.Dimension == 1)
{
// draw line
GL.Color3(0.0, 0.0, 0.0);
GL.LineWidth(3);
}
if (dp.Dimension == 2 || dp.Dimension == 3)
{
// draw face
GL.Color3(dp.Color);
}
float[] color1 = { (float)dp.Color[0], (float)dp.Color[1], (float)dp.Color[2] };
GL.Material(MaterialFace.FrontAndBack, MaterialParameter.Diffuse, color1);
//GL.Color3(0.8, 0.8, 0.8);
dp.DrawElements();
}
GL.DisableClientState(ArrayCap.VertexArray);
GL.DisableClientState(ArrayCap.NormalArray);
GL.DisableClientState(ArrayCap.TextureCoordArray);
}
else
{
// color is assigned to vertex
GL.ShadeModel(ShadingModel.Smooth);
GL.EnableClientState(ArrayCap.VertexArray);
GL.VertexPointer((int)VertexArray.Dimension, VertexPointerType.Double,
0, VertexArray.VertexCoordArray);
if (NormalArray != null && GL.IsEnabled(EnableCap.Lighting))
{
GL.EnableClientState(ArrayCap.NormalArray);
GL.NormalPointer(NormalPointerType.Double, 0, NormalArray);
GL.Enable(EnableCap.ColorMaterial);
GL.ColorMaterial(MaterialFace.FrontAndBack, ColorMaterialParameter.AmbientAndDiffuse);
float[] shine = { 1, 1, 1, 1 };
GL.Material(MaterialFace.FrontAndBack, MaterialParameter.Specular, shine);
GL.Material(MaterialFace.FrontAndBack, MaterialParameter.Shininess, 100.0f);
}
if (UVArray != null && GL.IsEnabled(EnableCap.Texture2D))
{
GL.EnableClientState(ArrayCap.TextureCoordArray);
GL.TexCoordPointer(2, TexCoordPointerType.Double, 0, UVArray);
}
GL.EnableClientState(ArrayCap.ColorArray);
GL.ColorPointer(4, ColorPointerType.Float, 0, ColorArray);
for (int idp = 0; idp < DrawParts.Count; idp++)
{
FaceFieldDrawPart dp = DrawParts[idp];
int layer = dp.Layer;
double height = (layer - minLayer) * layerHeight;
GL.Translate(0, 0, +height);
dp.DrawElements();
GL.Translate(0, 0, -height);
}
GL.DisableClientState(ArrayCap.ColorArray);
GL.DisableClientState(ArrayCap.VertexArray);
GL.DisableClientState(ArrayCap.NormalArray);
GL.DisableClientState(ArrayCap.TextureCoordArray);
}
if (IsColorLegendDraw)
{
// draw legend
var legend = new ColorLegend(ColorMap);
legend.Draw();
}
}
