void OnDrawGizmos()
{
if (m_Anchors.Length < 2 || m_SourceMeshRenderer == null)
{
return;
}
var sourceMesh = m_SourceMeshRenderer.GetComponent <MeshFilter>().sharedMesh;
if (sourceMesh == null)
{
return;
}
var bounds = sourceMesh.bounds;
var unitLength = 0f;
switch (m_Axis)
{
case Axis.X: unitLength = bounds.size.x; break;
case Axis.Y: unitLength = bounds.size.y; break;
case Axis.Z: unitLength = bounds.size.z; break;
default: throw new System.ArgumentOutOfRangeException(nameof(m_Axis));
}
Gizmos.color = Color.blue;
for (var i = 0; i < m_Anchors.Length - 1; ++i)
{
if (m_Anchors[i] == null || m_Anchors[i + 1] == null)
{
continue;
}
var startPos = m_Anchors[i].position;
var endPos = m_Anchors[i + 1].position;
var curve = new CatenaryCurve(startPos, endPos, m_Catenary, unitLength);
foreach (var line in curve)
{
Gizmos.DrawLine(line.from, line.to);
}
}
}
void RecalculateMesh()
{
if (m_Anchors.Length < 2 || m_SourceMeshRenderer == null)
{
return;
}
var sourceMesh = m_SourceMeshRenderer.GetComponent <MeshFilter>().sharedMesh;
if (sourceMesh == null)
{
return;
}
using (var so = new SerializedObject(this))
using (var sp = so.FindProperty(nameof(m_MeshObjects)))
{
DestroyAllCurves();
var bounds = sourceMesh.bounds;
var unitLength = 0f;
switch (m_Axis)
{
case Axis.X: unitLength = bounds.size.x; break;
case Axis.Y: unitLength = bounds.size.y; break;
case Axis.Z: unitLength = bounds.size.z; break;
default: throw new System.ArgumentOutOfRangeException(nameof(m_Axis));
}
sp.ClearArray();
for (var i = 0; i < m_Anchors.Length - 1; ++i)
{
if (m_Anchors[i] == null || m_Anchors[i + 1] == null)
{
continue;
}
var startPos = m_Anchors[i].position;
var endPos = m_Anchors[i + 1].position;
var curve = new CatenaryCurve(startPos, endPos, m_Catenary, unitLength);
var combines = new List <CombineInstance>();
foreach (var line in curve)
{
var scale = (line.to - line.from).magnitude / unitLength;
var matrix = Matrix4x4.LookAt((line.from + line.to) * 0.5f, line.to, Vector3.up) * Matrix4x4.Scale(Vector3.one + Vector3.forward * (scale - 1f));
switch (m_Axis)
{
case Axis.X: matrix *= Matrix4x4.Rotate(Quaternion.Euler(0, 90f, 0)); break;
case Axis.Y: matrix *= Matrix4x4.Rotate(Quaternion.Euler(90f, 0, 0)); break;
}
combines.Add(new CombineInstance()
{
mesh = sourceMesh, transform = matrix
});
}
var mesh = new Mesh();
mesh.CombineMeshes(combines.ToArray(), true, true, true);
MeshUtility.Optimize(mesh);
mesh.UploadMeshData(true);
var go = new GameObject($"ProcedualMesh{i}")
{
hideFlags = HideFlags.HideInHierarchy | HideFlags.NotEditable
};
++sp.arraySize;
using (var element = sp.GetArrayElementAtIndex(sp.arraySize - 1))
element.objectReferenceValue = go;
var meshFilter = go.AddComponent <MeshFilter>();
var renderer = go.AddComponent <MeshRenderer>();
meshFilter.sharedMesh = mesh;
renderer.sharedMaterials = m_SourceMeshRenderer.sharedMaterials;
Undo.RegisterCreatedObjectUndo(mesh, "Create Mesh");
Undo.RegisterCreatedObjectUndo(go, "Create GameObject");
}
so.ApplyModifiedProperties();
}
}
