コード例 #1
0
ファイル: RenderCsgToGl.cs プロジェクト: jeske/agg-sharp
        public static Mesh CreateCylinder(Cylinder.CylinderPrimitive cylinderToMeasure)
        {
            Mesh cylinder = new Mesh();
            List<Vertex> bottomVerts = new List<Vertex>();
            List<Vertex> topVerts = new List<Vertex>();

            int count = 20;
            for (int i = 0; i < count; i++)
            {
                Vector2 bottomRadialPos = Vector2.Rotate(new Vector2(cylinderToMeasure.Radius1, 0), MathHelper.Tau*i/20);
                Vertex bottomVertex = cylinder.CreateVertex(new Vector3(bottomRadialPos.x, bottomRadialPos.y, - cylinderToMeasure.Height / 2));
                bottomVerts.Add(bottomVertex);
                Vector2 topRadialPos = Vector2.Rotate(new Vector2(cylinderToMeasure.Radius1, 0), MathHelper.Tau * i / 20);
                Vertex topVertex = cylinder.CreateVertex(new Vector3(topRadialPos.x, topRadialPos.y, cylinderToMeasure.Height / 2));
                topVerts.Add(topVertex);
            }

            cylinder.ReverseFaceEdges(cylinder.CreateFace(bottomVerts.ToArray()));
            cylinder.CreateFace(topVerts.ToArray());

            for (int i = 0; i < count - 1; i++)
            {
                cylinder.CreateFace(new Vertex[] { topVerts[i], bottomVerts[i], bottomVerts[i + 1], topVerts[i + 1] });
            }
            cylinder.CreateFace(new Vertex[] { topVerts[count - 1], bottomVerts[count - 1], bottomVerts[0], topVerts[0] });

            return cylinder;
        }