Add a uvmap for MeshDraft.Capsule

[BasmanovDaniil]

It might be possible to replicate the uvmap from the Unity's capsule.

ProceduralToolkit/Scripts/MeshDraftPrimitives.cs

Lines 670 to 784 in 02e59f9

	public static MeshDraft Capsule(float height, float radius, int segments = 32, int rings = 8)
	{
	float cylinderHeight = height - radius*2;
	int vertexCount = 2*rings*segments + 2;
	int triangleCount = 4*rings*segments;
	float horizontalAngle = 360f/segments;
	float verticalAngle = 90f/rings;
	var vertices = new Vector3[vertexCount];
	var normals = new Vector3[vertexCount];
	var triangles = new int[3*triangleCount];
	int vi = 2;
	int ti = 0;
	int topCapIndex = 0;
	int bottomCapIndex = 1;
	vertices[topCapIndex].Set(0, cylinderHeight/2 + radius, 0);
	normals[topCapIndex].Set(0, 1, 0);
	vertices[bottomCapIndex].Set(0, -cylinderHeight/2 - radius, 0);
	normals[bottomCapIndex].Set(0, -1, 0);
	for (int s = 0; s < segments; s++)
	{
	for (int r = 1; r <= rings; r++)
	{
	// Top cap vertex
	Vector3 normal = Geometry.PointOnSphere(1, s*horizontalAngle, 90 - r*verticalAngle);
	Vector3 vertex = new Vector3(
	x: radius*normal.x,
	y: radius*normal.y + cylinderHeight/2,
	z: radius*normal.z);
	vertices[vi] = vertex;
	normals[vi] = normal;
	vi++;
	// Bottom cap vertex
	vertices[vi].Set(vertex.x, -vertex.y, vertex.z);
	normals[vi].Set(normal.x, -normal.y, normal.z);
	vi++;
	int top_s1r1 = vi - 2;
	int top_s1r0 = vi - 4;
	int bot_s1r1 = vi - 1;
	int bot_s1r0 = vi - 3;
	int top_s0r1 = top_s1r1 - 2*rings;
	int top_s0r0 = top_s1r0 - 2*rings;
	int bot_s0r1 = bot_s1r1 - 2*rings;
	int bot_s0r0 = bot_s1r0 - 2*rings;
	if (s == 0)
	{
	top_s0r1 += vertexCount - 2;
	top_s0r0 += vertexCount - 2;
	bot_s0r1 += vertexCount - 2;
	bot_s0r0 += vertexCount - 2;
	}
	// Create cap triangles
	if (r == 1)
	{
	triangles[3*ti + 0] = topCapIndex;
	triangles[3*ti + 1] = top_s0r1;
	triangles[3*ti + 2] = top_s1r1;
	ti++;
	triangles[3*ti + 0] = bottomCapIndex;
	triangles[3*ti + 1] = bot_s1r1;
	triangles[3*ti + 2] = bot_s0r1;
	ti++;
	}
	else
	{
	triangles[3*ti + 0] = top_s1r0;
	triangles[3*ti + 1] = top_s0r0;
	triangles[3*ti + 2] = top_s1r1;
	ti++;
	triangles[3*ti + 0] = top_s0r0;
	triangles[3*ti + 1] = top_s0r1;
	triangles[3*ti + 2] = top_s1r1;
	ti++;
	triangles[3*ti + 0] = bot_s0r1;
	triangles[3*ti + 1] = bot_s0r0;
	triangles[3*ti + 2] = bot_s1r1;
	ti++;
	triangles[3*ti + 0] = bot_s0r0;
	triangles[3*ti + 1] = bot_s1r0;
	triangles[3*ti + 2] = bot_s1r1;
	ti++;
	}
	}
	// Create side triangles
	int top_s1 = vi - 2;
	int top_s0 = top_s1 - 2*rings;
	int bot_s1 = vi - 1;
	int bot_s0 = bot_s1 - 2*rings;
	if (s == 0)
	{
	top_s0 += vertexCount - 2;
	bot_s0 += vertexCount - 2;
	}
	triangles[3*ti + 0] = top_s0;
	triangles[3*ti + 1] = bot_s1;
	triangles[3*ti + 2] = top_s1;
	ti++;
	triangles[3*ti + 0] = bot_s0;
	triangles[3*ti + 1] = bot_s1;
	triangles[3*ti + 2] = top_s0;
	ti++;
	}