private void AddStem(LatheMeshBuilder lathe)
{
var sideVertices = new Vector2[numStemSegments];
float stemSegmentHeight = stemHeight / (numStemSegments - 1);
for (int i = 0; i < numStemSegments; ++i)
{
sideVertices[i] = new Vector2(stemRadius, i * stemSegmentHeight);
}
lathe.Add(sideVertices, rotationPerHeightUnitEuler);
}
private void AddCap(LatheMeshBuilder lathe)
{
var sideVertices = new Vector2[numCapSegments];
for (int i = 0; i < numCapSegments; ++i)
{
float t = (float)i / (numCapSegments - 1);
float height = stemHeight + Mathf.Lerp(0f, capHeight, t);
float radius = GetCapRadius(t);
sideVertices[i] = new Vector2(radius, height);
}
lathe.Add(sideVertices);
}
//this method updates the mesh if needed
public void UpdateMesh()
{
//nothing changed
if (isDirty == false)
{
return;
}
//start building mesh
var lathe = new LatheMeshBuilder(numSplines);
lathe.Add(sideVertices, rotationPerUnitHeightEuler);
//generate mesh and apply it to meshfilter
MeshFilter meshFilter = GetComponent <MeshFilter>();
meshFilter.sharedMesh = lathe.CreateMesh();
}