public void BuildMesh()
{
if (path == null)
{
path = GetComponent <PathBase>();
}
mf = GetComponent <MeshFilter>();
if (mf && path)
{
if (mf.sharedMesh != null)
{
DestroyImmediate(mf.sharedMesh);
}
if (mesh == null)
{
mesh = new Mesh();
}
else
{
mesh.Clear();
}
if (markDynamic)
{
mesh.MarkDynamic();
}
verts.Clear();
indices.Clear();
normals.Clear();
uvs.Clear();
colors.Clear();
Vector3 lastPos = path.GetPoint(0f);
Vector3 normal = -path.GetDirection(0f);
verts.Add(transform.InverseTransformPoint(lastPos + normal * path.Radius / 2f));
normals.Add(transform.InverseTransformVector(normal));
uvs.Add(new Vector2(0f, 0f));
if (colorVerts)
{
colors.Add(colorGradient.Evaluate(0f));
}
pathLength = path.GetLength() * fillAmount;
dists.Clear();
iters.Clear();
iters.Add(0f);
dists.Add(0f);
float totalDist = 0f;
float iter = 0f;
while (iter < fillAmount)
{
float moveDist = spacing;
while (moveDist > 0f && iter < fillAmount)
{
float prevIter = iter;
iter += alphaIter;
iter = Mathf.Clamp(iter, 0f, fillAmount);
Vector3 pos = path.GetPoint(iter);
Vector3 toPos = pos - lastPos;
float toPosDist = toPos.magnitude;
if (toPosDist < moveDist)
{
moveDist -= toPosDist;
totalDist += toPosDist;
lastPos = pos;
}
else
{
float alpha = moveDist / toPosDist;
iter = Mathf.Lerp(prevIter, iter, alpha);
lastPos = Vector3.Lerp(lastPos, pos, alpha);
iters.Add(iter);
totalDist += moveDist;
dists.Add(totalDist);
moveDist = 0f;
}
}
}
iters.Add(fillAmount);
dists.Add(totalDist);
LinePath linePath = path as LinePath;
if (linePath)
{
// THIS IS A BAD ATTEMPT AT MAKING LINEPATHS WORK. NOT OFFICIALLY SUPPORTED
int numPoints = linePath.Loop ? linePath.Points.Length : (linePath.Points.Length - 1);
float alphaPerPoint = fillAmount / (float)numPoints;
pointDirs.Clear();
pointIters.Clear();
for (int i = 1; i < numPoints; i++)
{
float alpha = alphaPerPoint * i;
Vector3 preDir = linePath.GetDirection(alpha - SplineUtils.DefaultTraverseAlphaSpeed);
Vector3 postDir = linePath.GetDirection(alpha + SplineUtils.DefaultTraverseAlphaSpeed);
Vector3 dir = (preDir + postDir) / 2f;
pointDirs.Add(dir);
pointIters.Add(alpha);
for (int j = 0; j < iters.Count; j++)
{
if (iters[j] > alpha)
{
iters.Insert(j, alpha);
dists.Insert(j, alpha); // Cursed
break;
}
}
}
for (int i = 0; i < iters.Count; i++)
{
Vector3 direction = path.GetDirection(iters[i]);
float nearestDist = Mathf.Infinity;
Vector3 nearestDir = direction;
for (int j = 0; j < pointIters.Count; j++)
{
float iterDist = Mathf.Abs(pointIters[j] - iters[i]);
if (iterDist < nearestDist && iterDist < lineCornerFalloff)
{
float alpha = Mathf.InverseLerp(lineCornerFalloff, 0f, iterDist);
nearestDir = Vector3.Lerp(direction, pointDirs[j], alpha);
nearestDist = iterDist;
}
}
AddEdgeLoop(iters[i], i, nearestDir);
}
}
else
{
for (int i = 0; i < iters.Count; i++)
{
AddEdgeLoop(iters[i], i);
}
}
normal = path.GetDirection(fillAmount);
verts.Add(transform.InverseTransformPoint(lastPos + normal * path.Radius / 2f));
uvs.Add(new Vector2(1, pathLength));
normals.Add(transform.InverseTransformVector(normal));
if (colorVerts)
{
colors.Add(colorGradient.Evaluate(1f));
}
mesh.SetVertices(verts);
mesh.SetTriangles(indices, 0);
mesh.SetNormals(normals);
mesh.SetUVs(0, uvs);
if (colorVerts)
{
mesh.SetColors(colors);
}
mf.sharedMesh = mesh;
OnMeshChanged(this);
}
}
