private static List <Polygon> CreateFromObjects(List <GameObject> objects, TransformVolume volume, float surfaceMaxAngle)
{
var pols = new List <Polygon>();
for (int i = 0, count = objects.Count; i < count; i++)
{
Mesh mesh = null;
MeshFilter meshFilter = objects[i].GetComponent <MeshFilter>();
if (meshFilter == null)
{
MeshCollider meshCollider = objects[i].GetComponent <MeshCollider>();
mesh = meshCollider.sharedMesh;
}
else
{
mesh = meshFilter.sharedMesh;
}
var verts = mesh.vertices;
for (int v = 0, count2 = verts.Length; v < count2; v++)
{
verts[v] = objects[i].transform.TransformPoint(verts[v]);
}
pols.AddRange(CreatePolygons(verts, mesh.triangles));
}
return(CutPolygons(pols, volume, surfaceMaxAngle));
}
public static Volume EditorVolumeControl(TransformVolume transformVolume, float handleSize, Color color)
{
Vector3 origin, size;
Vector3[] controlHandles = new Vector3[6];
var transform = transformVolume.transform;
Handles.color = color;
for (int i = 0; i < controlHandles.Length; i++)
{
controlHandles[i] = transformVolume.GetSidePosition(i);
}
controlHandles[0] = Handles.Slider(controlHandles[0], transform.right, handleSize, Handles.DotCap, 1);
controlHandles[1] = Handles.Slider(controlHandles[1], transform.right, handleSize, Handles.DotCap, 1);
controlHandles[2] = Handles.Slider(controlHandles[2], transform.up, handleSize, Handles.DotCap, 1);
controlHandles[3] = Handles.Slider(controlHandles[3], transform.up, handleSize, Handles.DotCap, 1);
controlHandles[4] = Handles.Slider(controlHandles[4], transform.forward, handleSize, Handles.DotCap, 1);
controlHandles[5] = Handles.Slider(controlHandles[5], transform.forward, handleSize, Handles.DotCap, 1);
origin.x = transform.InverseTransformPoint((controlHandles[0] + controlHandles[1]) * 0.5f).x;
origin.y = transform.InverseTransformPoint((controlHandles[2] + controlHandles[3]) * 0.5f).y;
origin.z = transform.InverseTransformPoint((controlHandles[4] + controlHandles[5]) * 0.5f).z;
size.x = transform.InverseTransformPoint(controlHandles[0]).x - transform.InverseTransformPoint(controlHandles[1]).x;
size.y = transform.InverseTransformPoint(controlHandles[2]).y - transform.InverseTransformPoint(controlHandles[3]).y;
size.z = transform.InverseTransformPoint(controlHandles[4]).z - transform.InverseTransformPoint(controlHandles[5]).z;
return(new Volume(origin, size));
}
private static List <Polygon> CutPolygons(List <Polygon> polygons, TransformVolume volume, float surfaceMaxAngle)
{
Vector3 up = volume.transform.up;
var pols = new List <Polygon>();
for (int i = 0, count = polygons.Count; i < count; i++)
{
var polygon = polygons[i];
if (!volume.IsInBounds(polygon.Vertices) || !IsAngle(surfaceMaxAngle, up, polygon.Direction))
{
continue;
}
if (!volume.IsOnBorder(polygon.Vertices))
{
pols.Add(polygon);
continue;
}
var tocut = new List <Polygon> {
polygon
};
for (int s = 0; s < 6; s++)
{
var plane = new Plane(volume.GetSideDirection(s), volume.GetSidePosition(s));
var cutted = new List <Polygon>();
for (int c = 0, cc = tocut.Count; c < cc; c++)
{
cutted.AddRange(tocut[c].Cut(plane));
}
tocut = cutted;
}
pols.AddRange(tocut);
}
return(pols);
}
private static List <Polygon> CreateFromObjects(List <GameObject> objects, TransformVolume volume, float surfaceMaxAngle)
{
objectsPols.Clear();
for (int i = 0, count = objects.Count; i < count; i++)
{
bool isOfflineMeshData = false;
Vector3[] verts = null;
int[] triangles = null;
//OfflineMeshData offlineMeshData = objects[i].GetComponent<OfflineMeshData>();
//if (null != offlineMeshData) {
// verts = offlineMeshData.vertices;
// triangles = offlineMeshData.triangles;
// isOfflineMeshData = true;
//} else
{
MeshFilter meshFilter = objects[i].GetComponent <MeshFilter>();
if (meshFilter == null || meshFilter.sharedMesh == null)
{
continue;
}
Mesh mesh = meshFilter.sharedMesh;
verts = mesh.vertices;
triangles = mesh.triangles;
}
if (!isOfflineMeshData)
{
for (int v = 0, count2 = verts.Length; v < count2; v++)
{
verts[v] = objects[i].transform.TransformPoint(verts[v]);
}
}
objectsPols.AddRange(CreatePolygons(verts, triangles));
}
return(CutPolygons(objectsPols, volume, surfaceMaxAngle));
}
private static List <Polygon> CreateFromTerrain(Terrain terrain, Vector3 terrainPos, Vector3 terrainSize, Bounds bounds, TransformVolume volume, float surfaceMaxAngle)
{
Vector3 start = bounds.center - bounds.size * 0.5f;
Vector3 end = bounds.center + bounds.size * 0.5f;
float size = terrainSize.x / (terrain.terrainData.heightmapResolution - 1);
var pols = TerrainPlane(terrainPos, size, start, end, terrainSize);
for (int p = 0, count = pols.Count; p < count; p++)
{
for (int v = 0; v < 3; v++)
{
Vector3 vert = pols[p].Vertices[v];
vert.y = terrainPos.y;
vert.y += terrain.SampleHeight(pols[p].Vertices[v]);
pols[p].Vertices[v] = vert;
}
}
return(CutPolygons(pols, volume, surfaceMaxAngle));
}