public static Mesh CreateMesh(Vector2[] poly, float extrusion)
{
// convert polygon to triangles
Triangulator triangulator = new Triangulator(poly);
int[] tris = triangulator.Triangulate();
Mesh m = new Mesh();
Vector3[] vertices = new Vector3[poly.Length * 2];
for (int i = 0; i < poly.Length; i++)
{
vertices[i].x = poly[i].x;
vertices[i].y = 0.0f;
vertices[i].z = poly[i].y; // front vertex
vertices[i + poly.Length].x = poly[i].x;
vertices[i + poly.Length].y = extrusion;
vertices[i + poly.Length].z = poly[i].y; // back vertex
}
int[] triangles = new int[tris.Length * 2 + poly.Length * 6];
int count_tris = 0;
for (int i = 0; i < tris.Length; i += 3)
{
triangles[i] = tris[i];
triangles[i + 1] = tris[i + 2];
triangles[i + 2] = tris[i + 1];
} // front vertices
count_tris += tris.Length;
for (int i = 0; i < tris.Length; i += 3)
{
triangles[count_tris + i] = tris[i + 1] + poly.Length;
triangles[count_tris + i + 1] = tris[i + 2] + poly.Length;
triangles[count_tris + i + 2] = tris[i] + poly.Length;
}
//texture coordinate
Vector2[] uvs = new Vector2[vertices.Length];
for (int i = 0; i < uvs.Length; i++)
{
uvs[i] = new Vector2(vertices[i].x, vertices[i].z);
}
m.vertices = vertices;
m.triangles = triangles;
m.uv = uvs;
m = Triangulator.SideExtrusion(m);
m.RecalculateNormals();
m.RecalculateBounds();
return(m);
}
public static Mesh CreateMesh(Vector2[] poly, float extrusion)
{
Array.Resize <Vector2>(ref poly, poly.Length - 1);
// convert polygon to triangles
Triangulator triangulator = new Triangulator(poly, false);
//Triangulator triangulator = new Triangulator(poly);
int[] tris = triangulator.Triangulate();
Mesh m = new Mesh();
Vector3[] vertices = new Vector3[poly.Length * 2];
for (int i = 0; i < poly.Length; i++)
{
vertices[i].x = poly[i].x;
vertices[i].y = 0.0f;
vertices[i].z = poly[i].y; // front vertex
vertices[i + poly.Length].x = poly[i].x;
vertices[i + poly.Length].y = extrusion;
vertices[i + poly.Length].z = poly[i].y; // back vertex
}
int[] triangles = new int[tris.Length];
int count_tris = 0;
// If we want to render the underneath
//for (int i = 0; i < tris.Length; i += 3)
//{
// triangles[i] = tris[i];
// triangles[i + 1] = tris[i + 2];
// triangles[i + 2] = tris[i + 1];
//} // front vertices
//count_tris += tris.Length;
for (int i = 0; i < tris.Length; i += 3)
{
triangles[count_tris + i] = tris[i + 1] + poly.Length;
triangles[count_tris + i + 1] = tris[i + 2] + poly.Length;
triangles[count_tris + i + 2] = tris[i] + poly.Length;
}
//texture coordinate
Vector2[] uvs = new Vector2[vertices.Length];
for (int i = 0; i < uvs.Length; i++)
{
uvs[i] = new Vector2(vertices[i].x, vertices[i].z);
}
m.vertices = vertices;
m.triangles = triangles;
m.uv = uvs;
m = Triangulator.SideExtrusion(m, IsClockwise(poly));
m.RecalculateNormals();
m.RecalculateBounds();
return(m);
}
public static Mesh CreateMesh3D(Vector2[] poly, float extrusion)
{
// convert polygon to triangles
Triangulator triangulator = new Triangulator(poly);
int[] traingulatedTris = triangulator.Triangulate();
Mesh m = new Mesh();
Vector3[] vertices;
if (extrusion == 0f)
{
vertices = new Vector3[poly.Length];
}
else
{
vertices = new Vector3[poly.Length * 2];
}
for (int i = 0; i < poly.Length; i++)
{
vertices [i].x = poly [i].x;
vertices [i].y = poly [i].y;
vertices [i].z = -extrusion; // front vertex
if (extrusion != 0f)
{
vertices [i + poly.Length].x = poly [i].x;
vertices [i + poly.Length].y = poly [i].y;
vertices [i + poly.Length].z = extrusion; // back vertex
}
}
int[] triangles;
if (extrusion == 0f)
{
triangles = new int[traingulatedTris.Length];
}
else
{
triangles = new int[traingulatedTris.Length * 2 + poly.Length * 6];
}
int count_tris = 0;
for (int i = 0; i < traingulatedTris.Length; i += 3)
{
triangles [i] = traingulatedTris [i];
triangles [i + 1] = traingulatedTris [i + 1];
triangles [i + 2] = traingulatedTris [i + 2];
} // front vertices
if (extrusion != 0f)
{
count_tris += traingulatedTris.Length;
for (int i = 0; i < traingulatedTris.Length; i += 3)
{
triangles [count_tris + i] = traingulatedTris [i + 2] + poly.Length;
triangles [count_tris + i + 1] = traingulatedTris [i + 1] + poly.Length;
triangles [count_tris + i + 2] = traingulatedTris [i] + poly.Length;
} // back vertices
}
//texture coordinate
Vector2[] uvs = new Vector2[vertices.Length];
for (int i = 0, c = uvs.Length; i < c; ++i)
{
uvs[i].x = vertices[i].x;
uvs[i].y = vertices[i].y;
}
m.vertices = vertices;
m.triangles = triangles;
m.uv = uvs;
if (extrusion != 0f)
{
m = Triangulator.SideExtrusion(m);
}
m.RecalculateNormals();
m.RecalculateBounds();
m.Optimize();
return(m);
}
