void HandleDuplication()
{
#if UNITY_EDITOR
{
var currentInstanceID = this.GetInstanceID();
if (instanceID == 0)
{
instanceID = currentInstanceID; genGuidHashCode = Guid.NewGuid().GetHashCode();
}
else if (instanceID != currentInstanceID)
{
var prevObject = UnityEditor.EditorUtility.InstanceIDToObject(instanceID) as CSGGeneratorComponent;
// if our stored instanceID is the same as an existing generator and has the same guid,
// we can assume we've been duplicated
if (prevObject && prevObject.genGuidHashCode == genGuidHashCode)
{
if (prevObject.brushMeshAsset == brushMeshAsset)
{
brushMeshAsset = Instantiate(brushMeshAsset);
}
genGuidHashCode = Guid.NewGuid().GetHashCode();
}
instanceID = currentInstanceID;
}
}
#endif
}
public static bool GenerateBoxAsset(CSGBrushMeshAsset brushMeshAsset, UnityEngine.Vector3 min, UnityEngine.Vector3 max, CSGSurfaceAsset[] surfaceAssets, SurfaceFlags surfaceFlags = SurfaceFlags.None)
{
if (!BoundsExtensions.IsValid(min, max))
{
brushMeshAsset.Clear();
return(false);
}
if (surfaceAssets.Length != 6)
{
brushMeshAsset.Clear();
return(false);
}
if (min.x > max.x)
{
float x = min.x; min.x = max.x; max.x = x;
}
if (min.y > max.y)
{
float y = min.y; min.y = max.y; max.y = y;
}
if (min.z > max.z)
{
float z = min.z; min.z = max.z; max.z = z;
}
brushMeshAsset.Polygons = CreateBoxAssetPolygons(surfaceAssets, surfaceFlags);
brushMeshAsset.HalfEdges = boxHalfEdges.ToArray();
brushMeshAsset.Vertices = BrushMeshFactory.CreateBoxVertices(min, max);
brushMeshAsset.CalculatePlanes();
brushMeshAsset.SetDirty();
return(true);
}
public static bool GenerateConicalFrustumAsset(CSGBrushMeshAsset brushMeshAsset, CSGCircleDefinition bottom, CSGCircleDefinition top, float rotation, int segments, CSGSurfaceAsset[] surfaceAssets, SurfaceDescription[] surfaceDescriptions)
{
if (segments < 3 || (top.height - bottom.height) == 0 || (bottom.diameterX == 0 && top.diameterX == 0) || (bottom.diameterZ == 0 && top.diameterZ == 0))
{
brushMeshAsset.Clear();
return(false);
}
if (surfaceAssets.Length != 3 ||
surfaceDescriptions.Length != segments + 2)
{
brushMeshAsset.Clear();
return(false);
}
var subMesh = new CSGBrushSubMesh();
if (!GenerateConicalFrustumSubMesh(subMesh, bottom, top, rotation, segments, surfaceAssets, surfaceDescriptions))
{
brushMeshAsset.Clear();
return(false);
}
brushMeshAsset.SubMeshes = new CSGBrushSubMesh[] { subMesh };
brushMeshAsset.CalculatePlanes();
brushMeshAsset.SetDirty();
return(true);
}
public SurfaceReference(CSGNode node, CSGBrushMeshAsset brushMeshAsset, int subNodeIndex, int subMeshIndex, int surfaceIndex, int surfaceID)
{
this.node = node;
this.brushMeshAsset = brushMeshAsset;
this.subNodeIndex = subNodeIndex;
this.subMeshIndex = subMeshIndex;
this.surfaceIndex = surfaceIndex;
this.surfaceID = surfaceID;
}
public static bool GenerateConeAsset(CSGBrushMeshAsset brushMeshAsset, CSGCircleDefinition bottom, float topHeight, float rotation, int sides, CSGSurfaceAsset[] surfaceAssets, SurfaceDescription[] surfaceDescriptions)
{
CSGCircleDefinition top;
top.diameterX = 0;
top.diameterZ = 0;
top.height = topHeight;
return(GenerateConicalFrustumAsset(brushMeshAsset, bottom, top, rotation, sides, surfaceAssets, surfaceDescriptions));
}
public virtual void UpdateGenerator()
{
// BrushMeshes of generators must always be unique
if (!brushMeshAsset ||
!CSGBrushMeshAssetManager.IsBrushMeshUnique(brushMeshAsset))
{
brushMeshAsset = UnityEngine.ScriptableObject.CreateInstance <CSGBrushMeshAsset>();
brushMeshAsset.name = "Generated " + NodeTypeName;
}
UpdateGeneratorInternal();
UpdateBrushMeshInstances();
}
public static bool GenerateSphereAsset(CSGBrushMeshAsset brushMeshAsset, CSGSphereDefinition definition)
{
var subMesh = new CSGBrushSubMesh();
if (!GenerateSphereSubMesh(subMesh, definition))
{
brushMeshAsset.Clear();
return(false);
}
brushMeshAsset.SubMeshes = new[] { subMesh };
brushMeshAsset.CalculatePlanes();
brushMeshAsset.SetDirty();
return(true);
}
public static bool GenerateBoxAsset(CSGBrushMeshAsset brushMeshAsset, UnityEngine.Vector3 min, UnityEngine.Vector3 max, CSGSurfaceAsset[] surfaceAssets, SurfaceDescription[] surfaceDescriptions)
{
if (!BoundsExtensions.IsValid(min, max))
{
brushMeshAsset.Clear();
Debug.LogError("bounds is of an invalid size " + (max - min));
return(false);
}
if (surfaceDescriptions == null || surfaceDescriptions.Length != 6)
{
brushMeshAsset.Clear();
Debug.LogError("surfaceDescriptions needs to be an array of length 6");
return(false);
}
if (surfaceAssets == null || surfaceAssets.Length != 6)
{
brushMeshAsset.Clear();
Debug.LogError("surfaceAssets needs to be an array of length 6");
return(false);
}
if (min.x > max.x)
{
float x = min.x; min.x = max.x; max.x = x;
}
if (min.y > max.y)
{
float y = min.y; min.y = max.y; max.y = y;
}
if (min.z > max.z)
{
float z = min.z; min.z = max.z; max.z = z;
}
brushMeshAsset.Polygons = CreateBoxAssetPolygons(surfaceAssets, surfaceDescriptions);
brushMeshAsset.HalfEdges = boxHalfEdges.ToArray();
brushMeshAsset.Vertices = BrushMeshFactory.CreateBoxVertices(min, max);
brushMeshAsset.CalculatePlanes();
brushMeshAsset.SetDirty();
return(true);
}
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 GenerateCylinderAsset(CSGBrushMeshAsset brushMeshAsset, CSGCylinderDefinition definition)
{
definition.Validate();
var tempTop = definition.top;
var tempBottom = definition.bottom;
if (!definition.isEllipsoid)
{
tempTop.diameterZ = tempTop.diameterX;
tempBottom.diameterZ = tempBottom.diameterX;
}
switch (definition.type)
{
case CylinderShapeType.Cylinder: return(BrushMeshAssetFactory.GenerateCylinderAsset(brushMeshAsset, tempBottom, tempTop.height, definition.rotation, definition.sides, definition.surfaceAssets, definition.surfaceDescriptions));
case CylinderShapeType.ConicalFrustum: return(BrushMeshAssetFactory.GenerateConicalFrustumAsset(brushMeshAsset, tempBottom, tempTop, definition.rotation, definition.sides, definition.surfaceAssets, definition.surfaceDescriptions));
case CylinderShapeType.Cone: return(BrushMeshAssetFactory.GenerateConeAsset(brushMeshAsset, tempBottom, tempTop.height, definition.rotation, definition.sides, definition.surfaceAssets, definition.surfaceDescriptions));
}
return(false);
}
public static bool GenerateLinearStairsAsset(CSGBrushMeshAsset brushMeshAsset, CSGLinearStairsDefinition definition)
{
definition.Validate();
int subMeshCount = GetLinearStairsSubMeshCount(definition, definition.leftSide, definition.rightSide);
if (subMeshCount == 0)
{
brushMeshAsset.Clear();
return(false);
}
CSGBrushSubMesh[] subMeshes;
if (brushMeshAsset.SubMeshCount != subMeshCount)
{
subMeshes = new CSGBrushSubMesh[subMeshCount];
for (int i = 0; i < subMeshCount; i++)
{
subMeshes[i] = new CSGBrushSubMesh();
}
}
else
{
subMeshes = brushMeshAsset.SubMeshes;
}
if (!GenerateLinearStairsSubMeshes(subMeshes, definition, definition.leftSide, definition.rightSide, 0))
{
brushMeshAsset.Clear();
return(false);
}
brushMeshAsset.SubMeshes = subMeshes;
brushMeshAsset.CalculatePlanes();
brushMeshAsset.SetDirty();
return(true);
}
public static bool GenerateCapsuleAsset(CSGBrushMeshAsset brushMeshAsset, ref CSGCapsuleDefinition definition)
{
Vector3[] vertices = null;
if (!GenerateCapsuleVertices(ref definition, ref vertices))
{
brushMeshAsset.Clear();
return(false);
}
// TODO: share this with GenerateCapsuleVertices
var bottomCap = !definition.haveRoundedBottom;
var topCap = !definition.haveRoundedTop;
var sides = definition.sides;
var segments = definition.segments;
var bottomVertex = definition.bottomVertex;
var topVertex = definition.topVertex;
var subMeshes = new[] { new CSGBrushSubMesh() };
if (!GenerateSegmentedSubMesh(subMeshes[0],
sides, segments,
vertices,
topCap, bottomCap,
topVertex, bottomVertex,
definition.surfaceAssets, definition.surfaceDescriptions))
{
brushMeshAsset.Clear();
return(false);
}
brushMeshAsset.SubMeshes = subMeshes;
brushMeshAsset.CalculatePlanes();
brushMeshAsset.SetDirty();
return(true);
}
public static bool GenerateBoxAsset(CSGBrushMeshAsset brushMeshAsset, UnityEngine.Bounds bounds, CSGSurfaceAsset[] surfaceAssets, SurfaceDescription[] surfaceDescriptions)
{
return(GenerateBoxAsset(brushMeshAsset, bounds.min, bounds.max, surfaceAssets, surfaceDescriptions));
}
public static bool GeneratePathedStairsAsset(CSGBrushMeshAsset brushMeshAsset, CSGPathedStairsDefinition definition)
{
definition.Validate();
var shapeVertices = new List <Vector2>();
var shapeSegmentIndices = new List <int>();
GetPathVertices(definition.shape, definition.curveSegments, shapeVertices, shapeSegmentIndices);
var totalSubMeshCount = 0;
for (int i = 0; i < shapeVertices.Count; i++)
{
if (i == 0 && !definition.shape.closed)
{
continue;
}
var leftSide = (!definition.shape.closed && i == 1) ? definition.stairs.leftSide : StairsSideType.None;
var rightSide = (!definition.shape.closed && i == shapeVertices.Count - 1) ? definition.stairs.rightSide : StairsSideType.None;
totalSubMeshCount += GetLinearStairsSubMeshCount(definition.stairs, leftSide, rightSide);
}
if (totalSubMeshCount == 0)
{
brushMeshAsset.Clear();
return(false);
}
// var stairDirections = definition.shape.closed ? shapeVertices.Count : (shapeVertices.Count - 1);
// TODO: use list instead?
CSGBrushSubMesh[] subMeshes;
if (brushMeshAsset.SubMeshCount != totalSubMeshCount)
{
subMeshes = new CSGBrushSubMesh[totalSubMeshCount];
for (int i = 0; i < totalSubMeshCount; i++)
{
subMeshes[i] = new CSGBrushSubMesh();
}
}
else
{
subMeshes = brushMeshAsset.SubMeshes;
}
var depth = definition.stairs.depth;
var height = definition.stairs.height;
var halfDepth = depth * 0.5f;
var halfHeight = height * 0.5f;
int subMeshIndex = 0;
for (int vi0 = shapeVertices.Count - 3, vi1 = shapeVertices.Count - 2, vi2 = shapeVertices.Count - 1, vi3 = 0; vi3 < shapeVertices.Count; vi0 = vi1, vi1 = vi2, vi2 = vi3, vi3++)
{
if (vi2 == 0 && !definition.shape.closed)
{
continue;
}
// TODO: optimize this, we're probably redoing a lot of stuff for every iteration
var v0 = shapeVertices[vi0];
var v1 = shapeVertices[vi1];
var v2 = shapeVertices[vi2];
var v3 = shapeVertices[vi3];
var m0 = (v0 + v1) * 0.5f;
var m1 = (v1 + v2) * 0.5f;
var m2 = (v2 + v3) * 0.5f;
var d0 = (v1 - v0);
var d1 = (v2 - v1);
var d2 = (v3 - v2);
var maxWidth0 = d0.magnitude;
var maxWidth1 = d1.magnitude;
var maxWidth2 = d2.magnitude;
var halfWidth1 = d1 * 0.5f;
d0 /= maxWidth0;
d1 /= maxWidth1;
d2 /= maxWidth2;
var depthVector = new Vector3(d1.y, 0, -d1.x);
var lineCenter = new Vector3(m1.x, halfHeight, m1.y) - (depthVector * halfDepth);
var depthVector0 = new Vector2(d0.y, -d0.x) * depth;
var depthVector1 = new Vector2(d1.y, -d1.x) * depth;
var depthVector2 = new Vector2(d2.y, -d2.x) * depth;
m0 -= depthVector0;
m1 -= depthVector1;
m2 -= depthVector2;
Vector2 output;
var leftShear = Intersect(m1, d1, m0, d0, out output) ? Vector2.Dot(d1, (output - (m1 - halfWidth1))) : 0;
var rightShear = Intersect(m1, d1, m2, d2, out output) ? -Vector2.Dot(d1, (output - (m1 + halfWidth1))) : 0;
var transform = Matrix4x4.TRS(lineCenter, // move to center of line
Quaternion.LookRotation(depthVector, Vector3.up), // rotate to align with line
Vector3.one);
// set the width to the width of the line
definition.stairs.width = maxWidth1;
definition.stairs.nosingWidth = 0;
var leftSide = (!definition.shape.closed && vi2 == 1) ? definition.stairs.leftSide : StairsSideType.None;
var rightSide = (!definition.shape.closed && vi2 == shapeVertices.Count - 1) ? definition.stairs.rightSide : StairsSideType.None;
var subMeshCount = GetLinearStairsSubMeshCount(definition.stairs, leftSide, rightSide);
if (subMeshCount == 0)
{
continue;
}
if (!GenerateLinearStairsSubMeshes(subMeshes, definition.stairs, leftSide, rightSide, subMeshIndex))
{
brushMeshAsset.Clear();
return(false);
}
var halfWidth = maxWidth1 * 0.5f;
for (int m = 0; m < subMeshCount; m++)
{
var vertices = subMeshes[subMeshIndex + m].Vertices;
for (int v = 0; v < vertices.Length; v++)
{
// TODO: is it possible to put all of this in a single matrix?
// lerp the stairs to go from less wide to wider depending on the depth of the vertex
var depthFactor = 1.0f - ((vertices[v].z / definition.stairs.depth) + 0.5f);
var wideFactor = (vertices[v].x / halfWidth) + 0.5f;
var scale = (vertices[v].x / halfWidth);
// lerp the stairs width depending on if it's on the left or right side of the stairs
vertices[v].x = Mathf.Lerp(scale * (halfWidth - (rightShear * depthFactor)),
scale * (halfWidth - (leftShear * depthFactor)),
wideFactor);
vertices[v] = transform.MultiplyPoint(vertices[v]);
}
}
subMeshIndex += subMeshCount;
}
brushMeshAsset.SubMeshes = subMeshes;
brushMeshAsset.CalculatePlanes();
brushMeshAsset.SetDirty();
return(false);
}
public static bool GenerateRevolvedShapeAsset(CSGBrushMeshAsset brushMeshAsset, CSGRevolvedShapeDefinition definition)
{
definition.Validate();
var surfaces = definition.surfaceAssets;
var descriptions = definition.surfaceDescriptions;
var shapeVertices = new List <Vector2>();
var shapeSegmentIndices = new List <int>();
GetPathVertices(definition.shape, definition.curveSegments, shapeVertices, shapeSegmentIndices);
Vector2[][] polygonVerticesArray;
int[][] polygonIndicesArray;
if (!Decomposition.ConvexPartition(shapeVertices, shapeSegmentIndices,
out polygonVerticesArray,
out polygonIndicesArray))
{
brushMeshAsset.Clear();
return(false);
}
// TODO: splitting it before we do the composition would be better
var polygonVerticesList = polygonVerticesArray.ToList();
for (int i = polygonVerticesList.Count - 1; i >= 0; i--)
{
SplitPolygon(polygonVerticesList, i);
}
var subMeshes = new List <CSGBrushSubMesh>();
var horzSegments = definition.revolveSegments; //horizontalSegments;
var horzDegreePerSegment = definition.totalAngle / horzSegments;
// TODO: make this work when intersecting rotation axis
// 1. split polygons along rotation axis
// 2. if edge lies on rotation axis, make sure we don't create infinitely thin quad
// collapse this quad, or prevent this from happening
// TODO: share this code with torus generator
for (int p = 0; p < polygonVerticesList.Count; p++)
{
var polygonVertices = polygonVerticesList[p];
// var segmentIndices = polygonIndicesArray[p];
var shapeSegments = polygonVertices.Length;
var vertSegments = polygonVertices.Length;
var descriptionIndex = new int[2 + vertSegments];
descriptionIndex[0] = 0;
descriptionIndex[1] = 1;
for (int v = 0; v < vertSegments; v++)
{
descriptionIndex[v + 2] = 2;
}
var horzOffset = definition.startAngle;
for (int h = 1, pr = 0; h < horzSegments + 1; pr = h, h++)
{
var hDegree0 = (pr * horzDegreePerSegment) + horzOffset;
var hDegree1 = (h * horzDegreePerSegment) + horzOffset;
var rotation0 = Quaternion.AngleAxis(hDegree0, Vector3.forward);
var rotation1 = Quaternion.AngleAxis(hDegree1, Vector3.forward);
var subMeshVertices = new Vector3[vertSegments * 2];
for (int v = 0; v < vertSegments; v++)
{
subMeshVertices[v + vertSegments] = rotation0 * new Vector3(polygonVertices[v].x, 0, polygonVertices[v].y);
subMeshVertices[v] = rotation1 * new Vector3(polygonVertices[v].x, 0, polygonVertices[v].y);
}
var subMesh = new CSGBrushSubMesh();
if (!CreateExtrudedSubMesh(subMesh, vertSegments, descriptionIndex, descriptionIndex, 0, 1, subMeshVertices, surfaces, descriptions))
{
continue;
}
if (!subMesh.Validate())
{
brushMeshAsset.Clear();
return(false);
}
subMeshes.Add(subMesh);
}
}
brushMeshAsset.SubMeshes = subMeshes.ToArray();
brushMeshAsset.CalculatePlanes();
brushMeshAsset.SetDirty();
return(true);
}
public static bool GenerateExtrudedShapeAsset(CSGBrushMeshAsset brushMeshAsset, Curve2D shape, Path path, int curveSegments, CSGSurfaceAsset[] surfaceAssets, ref SurfaceDescription[] surfaceDescriptions)
{
var shapeVertices = new List <Vector2>();
var shapeSegmentIndices = new List <int>();
GetPathVertices(shape, curveSegments, shapeVertices, shapeSegmentIndices);
Vector2[][] polygonVerticesArray;
int[][] polygonIndicesArray;
if (!Decomposition.ConvexPartition(shapeVertices, shapeSegmentIndices,
out polygonVerticesArray,
out polygonIndicesArray))
{
return(false);
}
// TODO: make each extruded quad split into two triangles when it's not a perfect plane,
// split it to make sure it's convex
// TODO: make it possible to smooth (parts) of the shape
// TODO: make materials work well
// TODO: make it possible to 'draw' shapes on any surface
// TODO: make path work as a spline, with subdivisions
// TODO: make this work well with twisted rotations
// TODO: make shape/path subdivisions be configurable / automatic
var subMeshes = new List <CSGBrushSubMesh>();
for (int p = 0; p < polygonVerticesArray.Length; p++)
{
var polygonVertices = polygonVerticesArray[p];
var segmentIndices = polygonIndicesArray[p];
var shapeSegments = polygonVertices.Length;
for (int s = 0; s < path.segments.Length - 1; s++)
{
var pathPointA = path.segments[s];
var pathPointB = path.segments[s + 1];
int subSegments = 1;
var offsetQuaternion = pathPointB.rotation * Quaternion.Inverse(pathPointA.rotation);
var offsetEuler = offsetQuaternion.eulerAngles;
if (offsetEuler.x > 180)
{
offsetEuler.x = 360 - offsetEuler.x;
}
if (offsetEuler.y > 180)
{
offsetEuler.y = 360 - offsetEuler.y;
}
if (offsetEuler.z > 180)
{
offsetEuler.z = 360 - offsetEuler.z;
}
var maxAngle = Mathf.Max(offsetEuler.x, offsetEuler.y, offsetEuler.z);
if (maxAngle != 0)
{
subSegments = Mathf.Max(1, (int)Mathf.Ceil(maxAngle / 5));
}
if ((pathPointA.scale.x / pathPointA.scale.y) != (pathPointB.scale.x / pathPointB.scale.y) &&
(subSegments & 1) == 1)
{
subSegments += 1;
}
for (int n = 0; n < subSegments; n++)
{
var matrix0 = PathPoint.Lerp(ref path.segments[s], ref path.segments[s + 1], n / (float)subSegments);
var matrix1 = PathPoint.Lerp(ref path.segments[s], ref path.segments[s + 1], (n + 1) / (float)subSegments);
// TODO: this doesn't work if top and bottom polygons intersect
// => need to split into two brushes then, invert one of the two brushes
var invertDot = Vector3.Dot(matrix0.MultiplyVector(Vector3.forward).normalized, (matrix1.MultiplyPoint(shapeVertices[0]) - matrix0.MultiplyPoint(shapeVertices[0])).normalized);
if (invertDot == 0.0f)
{
continue;
}
Vector3[] vertices;
if (invertDot < 0)
{
var m = matrix0; matrix0 = matrix1; matrix1 = m;
}
if (!GetExtrudedVertices(polygonVertices, matrix0, matrix1, out vertices))
{
continue;
}
var subMesh = new CSGBrushSubMesh();
CreateExtrudedSubMesh(subMesh, shapeSegments, segmentIndices, 0, 1, vertices, surfaceAssets, surfaceDescriptions);
subMeshes.Add(subMesh);
}
}
}
brushMeshAsset.SubMeshes = subMeshes.ToArray();
brushMeshAsset.CalculatePlanes();
brushMeshAsset.OnValidate();
brushMeshAsset.SetDirty();
return(true);
}
public static bool GenerateTorusAsset(CSGBrushMeshAsset brushMeshAsset, CSGTorusDefinition definition)
{
Vector3[] vertices = null;
if (!GenerateTorusVertices(definition, ref vertices))
{
brushMeshAsset.Clear();
return(false);
}
definition.Validate();
var surfaces = definition.surfaceAssets;
var descriptions = definition.surfaceDescriptions;
var tubeRadiusX = (definition.tubeWidth * 0.5f);
var tubeRadiusY = (definition.tubeHeight * 0.5f);
var torusRadius = (definition.outerDiameter * 0.5f) - tubeRadiusX;
var horzSegments = definition.horizontalSegments;
var vertSegments = definition.verticalSegments;
var horzDegreePerSegment = (definition.totalAngle / horzSegments);
var vertDegreePerSegment = (360.0f / vertSegments) * Mathf.Deg2Rad;
var descriptionIndex = new int[2 + vertSegments];
descriptionIndex[0] = 0;
descriptionIndex[1] = 1;
var circleVertices = new Vector2[vertSegments];
var min = new Vector2(float.PositiveInfinity, float.PositiveInfinity);
var max = new Vector2(float.NegativeInfinity, float.NegativeInfinity);
var tubeAngleOffset = ((((vertSegments & 1) == 1) ? 0.0f : ((360.0f / vertSegments) * 0.5f)) + definition.tubeRotation) * Mathf.Deg2Rad;
for (int v = 0; v < vertSegments; v++)
{
var vRad = tubeAngleOffset + (v * vertDegreePerSegment);
circleVertices[v] = new Vector2((Mathf.Cos(vRad) * tubeRadiusX) - torusRadius,
(Mathf.Sin(vRad) * tubeRadiusY));
min.x = Mathf.Min(min.x, circleVertices[v].x);
min.y = Mathf.Min(min.y, circleVertices[v].y);
max.x = Mathf.Max(max.x, circleVertices[v].x);
max.y = Mathf.Max(max.y, circleVertices[v].y);
descriptionIndex[v + 2] = 2;
}
if (definition.fitCircle)
{
var center = (max + min) * 0.5f;
var size = (max - min) * 0.5f;
size.x = tubeRadiusX / size.x;
size.y = tubeRadiusY / size.y;
for (int v = 0; v < vertSegments; v++)
{
circleVertices[v].x = (circleVertices[v].x - center.x) * size.x;
circleVertices[v].y = (circleVertices[v].y - center.y) * size.y;
circleVertices[v].x -= torusRadius;
}
}
var subMeshes = new CSGBrushSubMesh[horzSegments];
var horzOffset = definition.startAngle;
for (int h = 1, p = 0; h < horzSegments + 1; p = h, h++)
{
var hDegree0 = (p * horzDegreePerSegment) + horzOffset;
var hDegree1 = (h * horzDegreePerSegment) + horzOffset;
var rotation0 = Quaternion.AngleAxis(hDegree0, Vector3.up);
var rotation1 = Quaternion.AngleAxis(hDegree1, Vector3.up);
var subMeshVertices = new Vector3[vertSegments * 2];
for (int v = 0; v < vertSegments; v++)
{
subMeshVertices[v + vertSegments] = rotation0 * circleVertices[v];
subMeshVertices[v] = rotation1 * circleVertices[v];
}
var subMesh = new CSGBrushSubMesh();
CreateExtrudedSubMesh(subMesh, vertSegments, descriptionIndex, descriptionIndex, 0, 1, subMeshVertices, surfaces, descriptions);
if (!subMesh.Validate())
{
brushMeshAsset.Clear();
return(false);
}
subMeshes[h - 1] = subMesh;
}
brushMeshAsset.SubMeshes = subMeshes;
brushMeshAsset.CalculatePlanes();
brushMeshAsset.SetDirty();
return(true);
}
public static bool GenerateSpiralStairsAsset(CSGBrushMeshAsset brushMeshAsset, ref CSGSpiralStairsDefinition definition, CSGSurfaceAsset[] surfaceAssets, ref SurfaceDescription[] surfaceDescriptions)
{
if (surfaceAssets == null ||
surfaceDescriptions == null ||
surfaceAssets.Length != 6 ||
surfaceDescriptions.Length != 6)
{
brushMeshAsset.Clear();
return(false);
}
definition.Validate();
const float kEpsilon = 0.001f;
var nosingDepth = definition.nosingDepth;
var treadHeight = (nosingDepth < kEpsilon) ? 0 : definition.treadHeight;
var haveTread = (treadHeight >= kEpsilon);
var innerDiameter = definition.innerDiameter;
var haveInnerCyl = (innerDiameter >= kEpsilon);
var riserType = definition.riserType;
var haveRiser = riserType != StairsRiserType.None;
if (!haveRiser && !haveTread)
{
brushMeshAsset.Clear();
return(false);
}
var origin = definition.origin;
var startAngle = definition.startAngle * Mathf.Deg2Rad;
var anglePerStep = definition.AnglePerStep * Mathf.Deg2Rad;
var nosingWidth = definition.nosingWidth;
var outerDiameter = definition.outerDiameter;
var p0 = new Vector2(Mathf.Sin(0), Mathf.Cos(0));
var p1 = new Vector2(Mathf.Sin(anglePerStep), Mathf.Cos(anglePerStep));
var pm = new Vector2(Mathf.Sin(anglePerStep * 0.5f), Mathf.Cos(anglePerStep * 0.5f));
var pn = (p0 + p1) * 0.5f;
var stepOuterDiameter = outerDiameter + ((pm.magnitude - pn.magnitude) * (outerDiameter * 1.25f)); // TODO: figure out why we need the 1.25 magic number to fit the step in the outerDiameter?
var stepOuterRadius = stepOuterDiameter * 0.5f;
var stepInnerRadius = 0.0f;
var stepHeight = definition.stepHeight;
var height = definition.height;
var stepCount = definition.StepCount;
if (height < 0)
{
origin.y += height;
height = -height;
}
// TODO: expose this to user
var smoothSubDivisions = 3;
var cylinderSubMeshCount = haveInnerCyl ? 2 : 1;
var subMeshPerRiser = (riserType == StairsRiserType.None) ? 0 :
(riserType == StairsRiserType.Smooth) ? (2 * smoothSubDivisions)
: 1;
var riserSubMeshCount = (stepCount * subMeshPerRiser) + ((riserType == StairsRiserType.None) ? 0 : cylinderSubMeshCount);
var treadSubMeshCount = (haveTread ? stepCount + cylinderSubMeshCount : 0);
var subMeshCount = (treadSubMeshCount + riserSubMeshCount);
var treadStart = !haveRiser ? 0 : riserSubMeshCount;
var innerSides = definition.innerSegments;
var outerSides = definition.outerSegments;
var riserDepth = definition.riserDepth;
CSGBrushSubMesh[] subMeshes;
if (brushMeshAsset.SubMeshCount != subMeshCount)
{
subMeshes = new CSGBrushSubMesh[subMeshCount];
for (int i = 0; i < subMeshCount; i++)
{
subMeshes[i] = new CSGBrushSubMesh();
}
}
else
{
subMeshes = brushMeshAsset.SubMeshes;
}
if (haveRiser)
{
if (riserType == StairsRiserType.ThinRiser)
{
var minY = origin.y;
var maxY = origin.y + stepHeight - treadHeight;
Vector2 o0, o1;
float angle = startAngle;
var c1 = Mathf.Sin(angle) * stepOuterRadius;
var s1 = Mathf.Cos(angle) * stepOuterRadius;
for (int i = 0; i < stepCount; i++)
{
var c0 = c1;
var s0 = s1;
angle += anglePerStep;
c1 = Mathf.Sin(angle) * stepOuterRadius;
s1 = Mathf.Cos(angle) * stepOuterRadius;
o0 = new Vector2(origin.x + c0, origin.z + s0);
o1 = new Vector2(origin.x, origin.z);
var riserVector = (new Vector2((c0 - c1), (s0 - s1)).normalized) * riserDepth;
var i0 = o0 - riserVector;
var i1 = o1 - riserVector;
var vertices = new[] {
new Vector3(i0.x, maxY, i0.y), // 0
new Vector3(i1.x, maxY, i1.y), // 1
new Vector3(o1.x, maxY, o1.y), // 2
new Vector3(o0.x, maxY, o0.y), // 3
new Vector3(i0.x, minY, i0.y), // 4
new Vector3(i1.x, minY, i1.y), // 5
new Vector3(o1.x, minY, o1.y), // 6
new Vector3(o0.x, minY, o0.y), // 7
};
if (i == 0)
{
subMeshes[i].Polygons = CreateBoxAssetPolygons(surfaceAssets, surfaceDescriptions);
minY -= treadHeight;
}
else
{
subMeshes[i].Polygons = subMeshes[0].Polygons.ToArray();
}
subMeshes[i].HalfEdges = (anglePerStep > 0) ? invertedBoxHalfEdges.ToArray() : boxHalfEdges.ToArray();
subMeshes[i].Vertices = vertices;
minY += stepHeight;
maxY += stepHeight;
}
}
else
if (riserType == StairsRiserType.Smooth)
{
//var stepY = stepHeight;
var minY = origin.y;
var maxY = origin.y + stepHeight - treadHeight;
var maxY2 = origin.y + (stepHeight * 2) - treadHeight;
float angle = startAngle;
var c1 = Mathf.Sin(angle);
var s1 = Mathf.Cos(angle);
angle += anglePerStep;
var c2 = Mathf.Sin(angle);
var s2 = Mathf.Cos(angle);
for (int i = 0; i < riserSubMeshCount; i += subMeshPerRiser)
{
var c0 = c1;
var s0 = s1;
c1 = c2;
s1 = s2;
angle += anglePerStep;
c2 = Mathf.Sin(angle);
s2 = Mathf.Cos(angle);
var c0o = c0 * stepOuterRadius;
var c1o = c1 * stepOuterRadius;
var s0o = s0 * stepOuterRadius;
var s1o = s1 * stepOuterRadius;
var o0 = new Vector2(origin.x + c0o, origin.z + s0o);
var o1 = new Vector2(origin.x + c1o, origin.z + s1o);
var i0 = o0;
var i1 = o1;
int subMeshIndex = i;
for (int subDiv = 1; subDiv < smoothSubDivisions; subDiv++)
{
// TODO: need to space the subdivisions from smallest spaces to bigger spaces
float stepMidRadius;
stepMidRadius = (((outerDiameter * 0.5f) * (1.0f / (smoothSubDivisions + 1))) * ((smoothSubDivisions - 1) - (subDiv - 1)));
if (subDiv == (smoothSubDivisions - 1))
{
var innerRadius = (innerDiameter * 0.5f) - 0.1f;
stepMidRadius = (innerRadius < 0.1f) ? stepMidRadius : innerRadius;
}
var c0i = c0 * stepMidRadius;
var c1i = c1 * stepMidRadius;
var s0i = s0 * stepMidRadius;
var s1i = s1 * stepMidRadius;
i0 = new Vector2(origin.x + c0i, origin.z + s0i);
i1 = new Vector2(origin.x + c1i, origin.z + s1i);
{
var vertices = new[] {
new Vector3(i0.x, maxY, i0.y), // 0
new Vector3(i0.x, minY, i0.y), // 1
new Vector3(o0.x, minY, o0.y), // 2
new Vector3(o0.x, maxY, o0.y), // 3
new Vector3(o1.x, maxY, o1.y), // 4
};
if (i == 0)
{
subMeshes[subMeshIndex].Polygons = CreateSquarePyramidAssetPolygons(surfaceAssets, surfaceDescriptions);
}
else
{
subMeshes[subMeshIndex].Polygons = subMeshes[subMeshIndex - i].Polygons.ToArray();
}
subMeshes[subMeshIndex].HalfEdges = (anglePerStep > 0) ? invertedSquarePyramidHalfEdges.ToArray() : squarePyramidHalfEdges.ToArray();
subMeshes[subMeshIndex].Vertices = vertices;
subMeshIndex++;
}
{
var vertices = new[] {
new Vector3(i0.x, maxY, i0.y), // 0
new Vector3(i0.x, minY, i0.y), // 1
new Vector3(i1.x, maxY, i1.y), // 2
new Vector3(o1.x, maxY, o1.y), // 3
};
if (i == 0)
{
subMeshes[subMeshIndex].Polygons = CreateTriangularPyramidAssetPolygons(surfaceAssets, surfaceDescriptions);
}
else
{
subMeshes[subMeshIndex].Polygons = subMeshes[subMeshIndex - i].Polygons.ToArray();
}
subMeshes[subMeshIndex].HalfEdges = (anglePerStep > 0) ? invertedTriangularPyramidHalfEdges.ToArray() : triangularPyramidHalfEdges.ToArray();
subMeshes[subMeshIndex].Vertices = vertices;
subMeshIndex++;
}
o0 = i0;
o1 = i1;
}
{
var vertices = new[] {
new Vector3(i0.x, maxY, i0.y), // 0
new Vector3(i1.x, maxY, i1.y), // 2
new Vector3(i0.x, minY, i0.y), // 1
new Vector3(origin.x, minY, origin.y), // 3
};
if (i == 0)
{
subMeshes[subMeshIndex].Polygons = CreateTriangularPyramidAssetPolygons(surfaceAssets, surfaceDescriptions);
}
else
{
subMeshes[subMeshIndex].Polygons = subMeshes[subMeshIndex - i].Polygons.ToArray();
}
subMeshes[subMeshIndex].HalfEdges = (anglePerStep > 0) ? invertedTriangularPyramidHalfEdges.ToArray() : triangularPyramidHalfEdges.ToArray();
subMeshes[subMeshIndex].Vertices = vertices;
subMeshIndex++;
}
{
var vertices = new[] {
new Vector3(i1.x, maxY, i1.y), // 2
new Vector3(i0.x, maxY, i0.y), // 0
new Vector3(origin.x, maxY, origin.y), // 1
new Vector3(origin.x, minY, origin.y), // 3
};
if (i == 0)
{
subMeshes[subMeshIndex].Polygons = CreateTriangularPyramidAssetPolygons(surfaceAssets, surfaceDescriptions);
}
else
{
subMeshes[subMeshIndex].Polygons = subMeshes[subMeshIndex - i].Polygons.ToArray();
}
subMeshes[subMeshIndex].HalfEdges = (anglePerStep > 0) ? invertedTriangularPyramidHalfEdges.ToArray() : triangularPyramidHalfEdges.ToArray();
subMeshes[subMeshIndex].Vertices = vertices;
subMeshIndex++;
}
if (i == 0)
{
minY -= treadHeight;
}
minY += stepHeight;
maxY += stepHeight;
maxY2 += stepHeight;
}
}
else
{
var minY = origin.y;
var maxY = origin.y + stepHeight - treadHeight;
Vector2 o0, o1;
float angle = startAngle;
var c1 = Mathf.Sin(angle) * stepOuterRadius;
var s1 = Mathf.Cos(angle) * stepOuterRadius;
for (int i = 0; i < stepCount; i++)
{
var c0 = c1;
var s0 = s1;
angle += anglePerStep;
c1 = Mathf.Sin(angle) * stepOuterRadius;
s1 = Mathf.Cos(angle) * stepOuterRadius;
o0 = new Vector2(origin.x + c0, origin.z + s0);
o1 = new Vector2(origin.x + c1, origin.z + s1);
var vertices = new[] {
new Vector3(origin.x, maxY, origin.z), // 0
new Vector3(o1.x, maxY, o1.y), // 1
new Vector3(o0.x, maxY, o0.y), // 2
new Vector3(origin.x, minY, origin.z), // 3
new Vector3(o1.x, minY, o1.y), // 4
new Vector3(o0.x, minY, o0.y), // 5
};
if (i == 0)
{
subMeshes[i].Polygons = CreateWedgeAssetPolygons(surfaceAssets, surfaceDescriptions);
minY -= treadHeight;
}
else
{
subMeshes[i].Polygons = subMeshes[0].Polygons.ToArray();
}
subMeshes[i].HalfEdges = (anglePerStep > 0) ? invertedWedgeHalfEdges.ToArray() : wedgeHalfEdges.ToArray();
subMeshes[i].Vertices = vertices;
if (riserType != StairsRiserType.FillDown)
{
minY += stepHeight;
}
maxY += stepHeight;
}
}
{
var subMeshIndex = treadStart - cylinderSubMeshCount;
var cylinderSurfaceAssets = new CSGSurfaceAsset[3] {
surfaceAssets[0], surfaceAssets[1], surfaceAssets[2]
};
var cylinderSurfaceDescriptions = new SurfaceDescription[outerSides + 2]; //surfaceDescriptions[0]
cylinderSurfaceDescriptions[0] = surfaceDescriptions[0];
cylinderSurfaceDescriptions[1] = surfaceDescriptions[1];
for (int i = 0; i < outerSides; i++)
{
cylinderSurfaceDescriptions[i + 2] = surfaceDescriptions[2];
}
GenerateCylinderSubMesh(subMeshes[subMeshIndex], outerDiameter, origin.y, origin.y + height, 0, outerSides, cylinderSurfaceAssets, cylinderSurfaceDescriptions);
subMeshes[subMeshIndex].Operation = CSGOperationType.Intersecting;
}
if (haveInnerCyl)
{
var subMeshIndex = treadStart - 1;
var cylinderSurfaceAssets = new CSGSurfaceAsset[3] {
surfaceAssets[0], surfaceAssets[1], surfaceAssets[2]
};
var cylinderSurfaceDescriptions = new SurfaceDescription[innerSides + 2]; //surfaceDescriptions[0]
cylinderSurfaceDescriptions[0] = surfaceDescriptions[0];
cylinderSurfaceDescriptions[1] = surfaceDescriptions[1];
for (int i = 0; i < innerSides; i++)
{
cylinderSurfaceDescriptions[i + 2] = surfaceDescriptions[2];
}
GenerateCylinderSubMesh(subMeshes[subMeshIndex], innerDiameter, origin.y, origin.y + height, 0, innerSides, cylinderSurfaceAssets, cylinderSurfaceDescriptions);
subMeshes[subMeshIndex].Operation = CSGOperationType.Subtractive;
}
}
if (haveTread)
{
var minY = origin.y + stepHeight - treadHeight;
var maxY = origin.y + stepHeight;
Vector2 i0, i1, o0, o1;
float angle = startAngle;
var c1 = Mathf.Sin(angle);
var s1 = Mathf.Cos(angle);
var startIndex = treadStart;
for (int n = 0, i = startIndex; n < stepCount; n++, i++)
{
var c0 = c1;
var s0 = s1;
angle += anglePerStep;
c1 = Mathf.Sin(angle);
s1 = Mathf.Cos(angle);
i0 = new Vector2(origin.x + (c0 * (stepInnerRadius)), origin.z + (s0 * (stepInnerRadius)));
i1 = new Vector2(origin.x + (c1 * (stepInnerRadius)), origin.z + (s1 * (stepInnerRadius)));
o0 = new Vector2(origin.x + (c0 * (stepOuterRadius + nosingWidth)), origin.z + (s0 * (stepOuterRadius + nosingWidth)));
o1 = new Vector2(origin.x + (c1 * (stepOuterRadius + nosingWidth)), origin.z + (s1 * (stepOuterRadius + nosingWidth)));
var noseSizeDeep = (new Vector2((c0 - c1), (s0 - s1)).normalized) * nosingDepth;
i0 += noseSizeDeep;
o0 += noseSizeDeep;
var vertices = new[] {
new Vector3(i1.x, maxY, i1.y), // 1
new Vector3(i0.x, maxY, i0.y), // 0
new Vector3(o0.x, maxY, o0.y), // 3
new Vector3(o1.x, maxY, o1.y), // 2
new Vector3(i1.x, minY, i1.y), // 5
new Vector3(i0.x, minY, i0.y), // 4
new Vector3(o0.x, minY, o0.y), // 7
new Vector3(o1.x, minY, o1.y), // 6
};
if (n == 0)
{
subMeshes[i].Polygons = CreateBoxAssetPolygons(surfaceAssets, surfaceDescriptions);
}
else
{
subMeshes[i].Polygons = subMeshes[startIndex].Polygons.ToArray();
}
subMeshes[i].HalfEdges = (anglePerStep > 0) ? invertedBoxHalfEdges.ToArray() : boxHalfEdges.ToArray();
subMeshes[i].Vertices = vertices;
minY += stepHeight;
maxY += stepHeight;
}
}
{
var subMeshIndex = subMeshCount - cylinderSubMeshCount;
var cylinderSurfaceAssets = new CSGSurfaceAsset[3] {
surfaceAssets[0], surfaceAssets[1], surfaceAssets[2]
};
var cylinderSurfaceDescriptions = new SurfaceDescription[outerSides + 2]; //surfaceDescriptions[0]
cylinderSurfaceDescriptions[0] = surfaceDescriptions[0];
cylinderSurfaceDescriptions[1] = surfaceDescriptions[1];
for (int i = 0; i < outerSides; i++)
{
cylinderSurfaceDescriptions[i + 2] = surfaceDescriptions[2];
}
GenerateCylinderSubMesh(subMeshes[subMeshIndex], outerDiameter + nosingWidth, origin.y, origin.y + height, 0, outerSides, cylinderSurfaceAssets, cylinderSurfaceDescriptions);
subMeshes[subMeshIndex].Operation = CSGOperationType.Intersecting;
}
if (haveInnerCyl)
{
var subMeshIndex = subMeshCount - 1;
var cylinderSurfaceAssets = new CSGSurfaceAsset[3] {
surfaceAssets[0], surfaceAssets[1], surfaceAssets[2]
};
var cylinderSurfaceDescriptions = new SurfaceDescription[innerSides + 2]; //surfaceDescriptions[0]
cylinderSurfaceDescriptions[0] = surfaceDescriptions[0];
cylinderSurfaceDescriptions[1] = surfaceDescriptions[1];
for (int i = 0; i < innerSides; i++)
{
cylinderSurfaceDescriptions[i + 2] = surfaceDescriptions[2];
}
GenerateCylinderSubMesh(subMeshes[subMeshIndex], innerDiameter - nosingWidth, origin.y, origin.y + height, 0, innerSides, cylinderSurfaceAssets, cylinderSurfaceDescriptions);
subMeshes[subMeshIndex].Operation = CSGOperationType.Subtractive;
}
brushMeshAsset.SubMeshes = subMeshes;
brushMeshAsset.CalculatePlanes();
brushMeshAsset.SetDirty();
return(true);
}
// TODO: create helper method to cut brushes, use that instead of intersection + subtraction brushes
// TODO: create spiral sides support
public static bool GenerateSpiralStairsAsset(CSGBrushMeshAsset brushMeshAsset, ref CSGSpiralStairsDefinition definition)
{
return(GenerateSpiralStairsAsset(brushMeshAsset, ref definition, definition.surfaceAssets, ref definition.surfaceDescriptions));
}