public static bool GenerateStadiumAsset(CSGBrushMeshAsset brushMeshAsset, CSGStadiumDefinition definition)
{
Vector3[] vertices = null;
if (!GenerateStadiumVertices(definition, ref vertices))
{
brushMeshAsset.Clear();
return(false);
}
var subMeshes = new[] { new CSGBrushSubMesh() };
var surfaceIndices = new int[vertices.Length + 2];
CreateExtrudedSubMesh(subMeshes[0], definition.sides, surfaceIndices, surfaceIndices, 0, 1, vertices, definition.surfaceAssets, definition.surfaceDescriptions);
brushMeshAsset.SubMeshes = subMeshes;
brushMeshAsset.CalculatePlanes();
brushMeshAsset.SetDirty();
return(true);
}
public static bool GenerateStadiumVertices(CSGStadiumDefinition definition, ref Vector3[] vertices)
{
definition.Validate();
var topSides = definition.topSides;
var bottomSides = definition.bottomSides;
var sides = definition.sides;
var length = definition.length;
var topLength = definition.topLength;
var bottomLength = definition.bottomLength;
var diameter = definition.diameter;
var radius = diameter * 0.5f;
if (vertices == null ||
vertices.Length != sides * 2)
{
vertices = new Vector3[sides * 2];
}
var firstTopSide = definition.firstTopSide;
var lastTopSide = definition.lastTopSide;
var firstBottomSide = definition.firstBottomSide;
var lastBottomSide = definition.lastBottomSide;
var haveCenter = definition.haveCenter;
int vertexIndex = 0;
if (!definition.haveRoundedTop)
{
vertices[vertexIndex] = new Vector3(-radius, 0, length * -0.5f); vertexIndex++;
vertices[vertexIndex] = new Vector3(radius, 0, length * -0.5f); vertexIndex++;
}
else
{
var degreeOffset = -180.0f * Mathf.Deg2Rad;
var degreePerSegment = (180.0f / topSides) * Mathf.Deg2Rad;
var center = new Vector3(0, 0, (length * -0.5f) + topLength);
for (int s = 0; s <= topSides; s++)
{
var hRad = (s * degreePerSegment) + degreeOffset;
var x = center.x + (Mathf.Cos(hRad) * radius);
var y = center.y;
var z = center.z + (Mathf.Sin(hRad) * topLength);
vertices[vertexIndex] = new Vector3(x, y, z);
vertexIndex++;
}
}
if (!haveCenter)
{
vertexIndex--;
}
//vertexIndex = definition.firstBottomSide;
if (!definition.haveRoundedBottom)
{
vertices[vertexIndex] = new Vector3(radius, 0, length * 0.5f); vertexIndex++;
vertices[vertexIndex] = new Vector3(-radius, 0, length * 0.5f); vertexIndex++;
}
else
{
var degreeOffset = 0.0f * Mathf.Deg2Rad;
var degreePerSegment = (180.0f / bottomSides) * Mathf.Deg2Rad;
var center = new Vector3(0, 0, (length * 0.5f) - bottomLength);
for (int s = 0; s <= bottomSides; s++)
{
var hRad = (s * degreePerSegment) + degreeOffset;
var x = center.x + (Mathf.Cos(hRad) * radius);
var y = center.y;
var z = center.z + (Mathf.Sin(hRad) * bottomLength);
vertices[vertexIndex] = new Vector3(x, y, z);
vertexIndex++;
}
}
var extrusion = Vector3.up * definition.height;
for (int s = 0; s < sides; s++)
{
vertices[s + sides] = vertices[s] + extrusion;
}
return(true);
}