private void GenerateRing(Quaternion[] rotations)
{
var positions = new Vector3[rotations.Length * (meshSegments * 2 + 2)];
var indices = new int[rotations.Length * meshSegments * 6];
var uv0 = new Vector2[rotations.Length * (meshSegments * 2 + 2)];
var vStep = 1.0f / meshSegments;
var angleStep = (Mathf.PI * 2.0f) / meshSegments;
var meshRadiusOuter = (meshRadius + meshHeight) * SGT_Helper.PolygonOuterBoundScale(angleStep);
// Write index data
{
var indicesIndex = 0;
var vertexIndex = 0;
for (var r = 0; r < rotations.Length; r++)
{
for (var i = 0; i < meshSegments; i++)
{
var vertexIndexNext = vertexIndex + 2;
// Index data
indices[indicesIndex + 0] = vertexIndex + 0;
indices[indicesIndex + 1] = vertexIndex + 1;
indices[indicesIndex + 2] = vertexIndexNext + 1;
indices[indicesIndex + 3] = vertexIndex + 0;
indices[indicesIndex + 4] = vertexIndexNext + 1;
indices[indicesIndex + 5] = vertexIndexNext + 0;
indicesIndex += 6;
vertexIndex += 2;
}
vertexIndex += 2;
}
}
// Write vertex data
{
var vertexIndex = 0;
for (var r = 0; r < rotations.Length; r++)
{
var rot = rotations[r];
for (var i = 0; i < meshSegments + 1; i++)
{
// Calculate stuff
var angle = angleStep * i;
var direction = new Vector3(Mathf.Sin(angle), Mathf.Cos(angle), 0.0f);
// Write vertex data
positions[vertexIndex + 0] = rot * (direction * meshRadius);
positions[vertexIndex + 1] = rot * (direction * meshRadiusOuter);
uv0[vertexIndex + 0] = new Vector2(vStep * i, 0.0f);
uv0[vertexIndex + 1] = new Vector2(vStep * i, 1.0f);
vertexIndex += 2;
}
}
}
generatedMesh = new Mesh();
generatedMesh.vertices = positions;
generatedMesh.triangles = indices;
generatedMesh.uv = uv0;
generatedMesh.RecalculateBounds();
generatedMesh.RecalculateNormals();
}
private void GenerateSliced()
{
var positions = new Vector3[ringSegments * 2 + 2];
var indices = new int[ringSegments * 6];
var uv0 = new Vector2[ringSegments * 2 + 2];
var normals = new Vector3[ringSegments * 2 + 2];
var vStep = (float)ringTextureRepeat / ringSegments;
var angleStep = ((Mathf.PI * 2.0f) / ringSlices) / ringSegments;
var ringRadiusInner = RingRadiusInner;
var ringRadiusOuter = RingRadiusOuter * SGT_Helper.PolygonOuterBoundScale(angleStep);
for (var i = 0; i < ringSegments; i++)
{
var indicesIndex = i * 6;
var vertexIndex = i * 2;
var vertexIndexNext = i * 2 + 2;
// Index data
indices[indicesIndex + 0] = vertexIndex + 0;
indices[indicesIndex + 1] = vertexIndex + 1;
indices[indicesIndex + 2] = vertexIndexNext + 1;
indices[indicesIndex + 3] = vertexIndex + 0;
indices[indicesIndex + 4] = vertexIndexNext + 1;
indices[indicesIndex + 5] = vertexIndexNext + 0;
}
for (var i = 0; i < ringSegments + 1; i++)
{
var vertexIndex = i * 2;
// Calculate stuff
var angle = angleStep * (float)i;
var direction = new Vector3(Mathf.Sin(angle), 0.0f, Mathf.Cos(angle));
// Write vertex data
positions[vertexIndex + 0] = direction * ringRadiusInner;
positions[vertexIndex + 1] = direction * ringRadiusOuter;
normals[vertexIndex + 0] = Vector3.up;
normals[vertexIndex + 1] = Vector3.up;
uv0[vertexIndex + 0] = new Vector2(0.0f, vStep * i);
uv0[vertexIndex + 1] = new Vector2(1.0f, vStep * i);
}
generatedMesh = new Mesh();
generatedMesh.name = "Sliced Ring Mesh";
generatedMesh.vertices = positions;
generatedMesh.triangles = indices;
generatedMesh.normals = normals;
generatedMesh.uv = uv0;
generatedMesh.RecalculateBounds();
if (ringSlices > 1)
{
generatedRotations = new Quaternion[ringSlices];
var sliceAngleStep = 360.0f / (float)ringSlices;
for (var i = 0; i < ringSlices; i++)
{
var angle = sliceAngleStep * (float)i;
generatedRotations[i] = Quaternion.Euler(0.0f, angle, 0.0f);
}
}
}
