mirror of
https://github.com/jhasse/poly2tri.git
synced 2024-11-05 22:09:52 +01:00
fixed edge avent AFront update
This commit is contained in:
parent
99f6af554c
commit
6757b713a0
@ -53,7 +53,7 @@ class AFront(iTriangle: Triangle) {
|
||||
return node
|
||||
node = node.next
|
||||
}
|
||||
throw new Exception("Advancing front error: point not found")
|
||||
null
|
||||
}
|
||||
|
||||
def insert(tuple: Tuple3[Point, Triangle, Node]) = {
|
||||
|
@ -157,7 +157,7 @@ class CDT(val points: List[Point], val segments: List[Segment], iTriangle: Trian
|
||||
private def pointEvent(point: Point): Triangle = {
|
||||
|
||||
val node = aFront.locate(point)
|
||||
|
||||
/*
|
||||
// Projected point coincides with existing point; create two triangles
|
||||
if(point.x == node.point.x && node.prev != null) {
|
||||
|
||||
@ -190,7 +190,7 @@ class CDT(val points: List[Point], val segments: List[Segment], iTriangle: Trian
|
||||
newNode.triangle
|
||||
|
||||
} else {
|
||||
|
||||
*/
|
||||
// Projected point hits advancing front; create new triangle
|
||||
val cwPoint = node.next.point
|
||||
val ccwPoint = node.point
|
||||
@ -222,7 +222,7 @@ class CDT(val points: List[Point], val segments: List[Segment], iTriangle: Trian
|
||||
// Fill in adjacent triangles if required
|
||||
scanAFront(newNode)
|
||||
newNode.triangle
|
||||
}
|
||||
//}
|
||||
}
|
||||
|
||||
// EdgeEvent
|
||||
@ -245,11 +245,17 @@ class CDT(val points: List[Point], val segments: List[Segment], iTriangle: Trian
|
||||
|
||||
// TODO: fix tList.last == null bug!
|
||||
// Not sure why this happens in bird & nazca monkey demo...
|
||||
if(tList.last == null)
|
||||
tList -= tList.last
|
||||
if(tList.last == null) tList -= tList.last
|
||||
|
||||
// Remove old triangles
|
||||
tList.foreach(t => mesh.map -= t)
|
||||
// Neighbor triangles
|
||||
val nTriangles = new ArrayBuffer[Triangle]
|
||||
|
||||
// Remove old triangles; collect neighbor triangles
|
||||
tList.foreach(t => {
|
||||
t.neighbors.foreach(n => if(n != null) nTriangles += n)
|
||||
mesh.map -= t
|
||||
//mesh.debug += t
|
||||
})
|
||||
|
||||
val lPoints = new ArrayBuffer[Point]
|
||||
val rPoints = new ArrayBuffer[Point]
|
||||
@ -282,16 +288,60 @@ class CDT(val points: List[Point], val segments: List[Segment], iTriangle: Trian
|
||||
val T2 = new ArrayBuffer[Triangle]
|
||||
triangulate(rPoints.toArray, List(point1, point2), T2)
|
||||
|
||||
// Update advancing front
|
||||
|
||||
val qNode = aFront.locate(edge.q)
|
||||
val pNode = aFront.locate(edge.p)
|
||||
println(tList.size)
|
||||
|
||||
for(t <- tList) {
|
||||
|
||||
if(qNode.triangle == t) {
|
||||
println("node")
|
||||
val p1 = qNode.point
|
||||
val p2 = qNode.next.point
|
||||
T1.foreach(tri => if(tri.contains(p1, p2)) qNode.triangle = tri)
|
||||
T2.foreach(tri => if(tri.contains(p1, p2)) qNode.triangle = tri)
|
||||
} else if(qNode.prev.triangle == t) {
|
||||
println("prev node")
|
||||
val p1 = qNode.prev.point
|
||||
val p2 = qNode.point
|
||||
T1.foreach(tri => if(tri.contains(p1, p2)) qNode.prev.triangle = tri)
|
||||
T2.foreach(tri => if(tri.contains(p1, p2)) qNode.prev.triangle = tri)
|
||||
} else if(qNode.next.triangle == t) {
|
||||
println("next node")
|
||||
} else
|
||||
|
||||
if(pNode.triangle == t) {
|
||||
println("Pnode")
|
||||
val p1 = pNode.point
|
||||
val p2 = pNode.next.point
|
||||
T1.foreach(tri => if(tri.contains(p1, p2)) pNode.triangle = tri)
|
||||
T2.foreach(tri => if(tri.contains(p1, p2)) pNode.triangle = tri)
|
||||
} else if(pNode.prev.triangle == t) {
|
||||
println("prev Pnode")
|
||||
val p1 = pNode.point
|
||||
val p2 = pNode.prev.point
|
||||
T1.foreach(tri => if(tri.contains(p1, p2)) pNode.prev.triangle = tri)
|
||||
T2.foreach(tri => if(tri.contains(p1, p2)) pNode.prev.triangle = tri)
|
||||
} else if(pNode.next.triangle == t) {
|
||||
println("next Pnode")
|
||||
}
|
||||
}
|
||||
|
||||
// Update neighbors
|
||||
//updateNeighbors(nTriangles, T1)
|
||||
updateNeighbors(nTriangles, T2)
|
||||
//nTriangles.foreach(n => n.printDebug)
|
||||
|
||||
// Mark constrained edges
|
||||
val dEdge = new Segment(point1, point2)
|
||||
T1.first mark(point1, point2)
|
||||
T2.first mark(point1, point2)
|
||||
|
||||
T1.first.mark(point1, point2)
|
||||
T2.first.mark(point1, point2)
|
||||
|
||||
//TODO update neighbor pointers
|
||||
|
||||
} else if(firstTriangle == null) {
|
||||
|
||||
// NOTE: So far this only works for single triangles
|
||||
|
||||
// No triangles are intersected by the edge; edge must lie outside the mesh
|
||||
// Apply constraint; traverse the AFront, and build triangles
|
||||
|
||||
@ -300,17 +350,18 @@ class CDT(val points: List[Point], val segments: List[Segment], iTriangle: Trian
|
||||
val point2 = if(ahead) edge.p else edge.q
|
||||
|
||||
val points = new ArrayBuffer[Point]
|
||||
val triangles = new ArrayBuffer[Triangle]
|
||||
// Neighbor triangles
|
||||
val nTriangles = new ArrayBuffer[Triangle]
|
||||
|
||||
var node = aFront.locate(point1)
|
||||
val first = node
|
||||
triangles += first.triangle
|
||||
nTriangles += first.triangle
|
||||
|
||||
node = node.next
|
||||
|
||||
while(node.point != point2) {
|
||||
points += node.point
|
||||
triangles += node.triangle
|
||||
nTriangles += node.triangle
|
||||
node = node.next
|
||||
}
|
||||
|
||||
@ -322,26 +373,33 @@ class CDT(val points: List[Point], val segments: List[Segment], iTriangle: Trian
|
||||
|
||||
// Update advancing front
|
||||
aFront -= (first, node.prev, T.first)
|
||||
|
||||
// Update neigbor pointers
|
||||
// Inneficient, but it works well...
|
||||
for(i <- triangles)
|
||||
for(j <- T)
|
||||
i.markNeighbor(j)
|
||||
|
||||
for(i <- 0 until T.size)
|
||||
for(j <- i+1 until T.size)
|
||||
T(i).markNeighbor(T(j))
|
||||
|
||||
// Update neighbors
|
||||
updateNeighbors(nTriangles, T)
|
||||
|
||||
// Mark constrained edge
|
||||
T.first mark(edge.p, edge.q)
|
||||
|
||||
|
||||
} else {
|
||||
// Mark constrained edge
|
||||
firstTriangle mark(edge.p, edge.q)
|
||||
}
|
||||
}
|
||||
|
||||
// Update neigbor pointers for edge event
|
||||
// Inneficient, but it works well...
|
||||
def updateNeighbors(nTriangles: ArrayBuffer[Triangle], T: ArrayBuffer[Triangle]) {
|
||||
|
||||
for(t1 <- nTriangles)
|
||||
for(t2 <- T)
|
||||
t1.markNeighbor(t2)
|
||||
|
||||
for(i <- 0 until T.size)
|
||||
for(j <- i+1 until T.size)
|
||||
T(i).markNeighbor(T(j))
|
||||
|
||||
}
|
||||
|
||||
// Marc Vigo Anglada's triangulate pseudo-polygon algo
|
||||
private def triangulate(P: Array[Point], ab: List[Point], T: ArrayBuffer[Triangle]) {
|
||||
|
||||
|
@ -48,25 +48,26 @@ class Triangle(val points: Array[Point], val neighbors: Array[Triangle]) {
|
||||
|
||||
// Update neighbor pointers
|
||||
// Debug version
|
||||
def markNeighbor(ccwPoint: Point, cwPoint: Point, triangle: Triangle, debug: HashSet[Triangle]) {
|
||||
if((ccwPoint == points(2) && cwPoint == points(1)) || (ccwPoint == points(1) && cwPoint == points(2)))
|
||||
def markNeighbor(p1: Point, p2: Point, triangle: Triangle, debug: HashSet[Triangle]) {
|
||||
if((p1 == points(2) && p2 == points(1)) || (p1 == points(1) && p2 == points(2)))
|
||||
neighbors(0) = triangle
|
||||
else if((ccwPoint == points(0) && cwPoint == points(2)) || (ccwPoint == points(2) && cwPoint == points(0)))
|
||||
else if((p1 == points(0) && p2 == points(2)) || (p1 == points(2) && p2 == points(0)))
|
||||
neighbors(1) = triangle
|
||||
else if((ccwPoint == points(0) && cwPoint == points(1)) || (ccwPoint == points(1) && cwPoint == points(0)))
|
||||
else if((p1 == points(0) && p2 == points(1)) || (p1 == points(1) && p2 == points(0)))
|
||||
neighbors(2) = triangle
|
||||
else {
|
||||
debug += triangle
|
||||
println("Neighbor pointer ERROR!")
|
||||
}
|
||||
}
|
||||
|
||||
// Update neighbor pointers
|
||||
def markNeighbor(ccwPoint: Point, cwPoint: Point, triangle: Triangle) {
|
||||
if((ccwPoint == points(2) && cwPoint == points(1)) || (ccwPoint == points(1) && cwPoint == points(2)))
|
||||
def markNeighbor(p1: Point, p2: Point, triangle: Triangle) {
|
||||
if((p1 == points(2) && p2 == points(1)) || (p1 == points(1) && p2 == points(2)))
|
||||
neighbors(0) = triangle
|
||||
else if((ccwPoint == points(0) && cwPoint == points(2)) || (ccwPoint == points(2) && cwPoint == points(0)))
|
||||
else if((p1 == points(0) && p2 == points(2)) || (p1 == points(2) && p2 == points(0)))
|
||||
neighbors(1) = triangle
|
||||
else if((ccwPoint == points(0) && cwPoint == points(1)) || (ccwPoint == points(1) && cwPoint == points(0)))
|
||||
else if((p1 == points(0) && p2 == points(1)) || (p1 == points(1) && p2 == points(0)))
|
||||
neighbors(2) = triangle
|
||||
else {
|
||||
throw new Exception("Neighbor pointer error, please report!")
|
||||
|
Loading…
Reference in New Issue
Block a user