PolygonMesh3DPainter.cs

using System;
using System.Numerics;
using Waher.Script.Graphs.Functions.Plots;
 
namespace Waher.Script.Graphs3D.Functions.Plots
{
    public class PolygonMesh3DPainter : SingleColorGraphPainter, IPainter3D
    {
        public void DrawGraph(Graphs3D.Canvas3D Canvas, Vector4[,] Points, Vector4[,] Normals,
            object[] Parameters, Vector4[,] PrevPoints, Vector4[,] PrevNormals,
            object[] PrevParameters, DrawingVolume DrawingVolume)
        {
            int i, c = Points.GetLength(0);
            int j, d = Points.GetLength(1);
            I3DShader Shader = Graph3D.ToShader(Parameters[0]);
            bool TwoSided = Expression.ToDouble(Parameters[1]) != 0;
            Vector4[] Nodes = new Vector4[4];
 
            c--;
            d--;
 
            for (i = 0; i < c; i++)
            {
                for (j = 0; j < d; j++)
                {
                    Nodes[0] = Points[i, j];
                    Nodes[1] = Points[i + 1, j];
                    Nodes[2] = Points[i + 1, j + 1];
                    Nodes[3] = Points[i, j + 1];
 
                    Canvas.Polygon(Nodes, Shader, TwoSided);
                }
            }
        }
    }
}