X-Git-Url: http://git.megacz.com/?p=anneal.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fqfat%2FMesh.java;h=45ddf31e7daa3ef803395907a75cf8c05475cb93;hp=62498f84c59f4d977843edb2fb09d3cadd0125e3;hb=17972ccdcc4b45ccf91a4281d6dedd6f1d79e003;hpb=db91e356d433030537508cacbf91bce9dd82f38f diff --git a/src/edu/berkeley/qfat/Mesh.java b/src/edu/berkeley/qfat/Mesh.java index 62498f8..45ddf31 100644 --- a/src/edu/berkeley/qfat/Mesh.java +++ b/src/edu/berkeley/qfat/Mesh.java @@ -11,6 +11,8 @@ import edu.wlu.cs.levy.CG.KDTree; import edu.berkeley.qfat.geom.Point; import com.infomatiq.jsi.IntProcedure; +// EDGES RUN COUNTER-CLOCKWISE + public class Mesh implements Iterable { public static final float EPSILON = (float)0.0001; @@ -19,6 +21,55 @@ public class Mesh implements Iterable { private RTree triangles = new RTree(); private PointSet vertices = new PointSet(); + public boolean option_wireframe = false; + public boolean option_errorNormals = false; + public boolean option_selectable = true; + + public void render(GL gl, Matrix m) { + if (option_wireframe) { + gl.glDisable(GL.GL_LIGHTING); + gl.glBegin(GL.GL_LINES); + gl.glColor3f(1, 1, 1); + for (T t : this) { + m.times(t.e1().p1.goodp).glVertex(gl); + m.times(t.e1().p2.goodp).glVertex(gl); + m.times(t.e2().p1.goodp).glVertex(gl); + m.times(t.e2().p2.goodp).glVertex(gl); + m.times(t.e3().p1.goodp).glVertex(gl); + m.times(t.e3().p2.goodp).glVertex(gl); + } + gl.glEnd(); + gl.glEnable(GL.GL_LIGHTING); + return; + } + for(T t : this) { + gl.glColor4f((float)(0.25+(0.05*t.color)), + (float)(0.25+(0.05*t.color)), + (float)(0.75+(0.05*t.color)), + (float)0.3); + /* + if (t.red) { + gl.glColor4f((float)(0.75+(0.05*t.color)), + (float)(0.25+(0.05*t.color)), + (float)(0.25+(0.05*t.color)), + (float)0.3); + } + */ + t.glTriangle(gl, m); + } + if (option_errorNormals) + for(T t : this) + for(Mesh.Vertex p : new Mesh.Vertex[] { t.v1(), t.v2(), t.v3() }) { + if (p.ok) { + gl.glBegin(GL.GL_LINES); + gl.glColor3f(1, 1, 1); + p.p.glVertex(gl); + p.p.plus(p.norm().times((float)p.error()*10)).glVertex(gl); + gl.glEnd(); + } + } + } + public boolean immutableVertices; public Mesh error_against = null; public double error = 0; @@ -51,7 +102,8 @@ public class Mesh implements Iterable { public void transform(Matrix m) { ArrayList set = new ArrayList(); for(Vertex v : vertices) set.add(v); - for(Vertex v : set) v.transform(m.times(v.p), true); + for(Vertex v : set) v.transform(m.times(v.p), true, null); + for(Vertex v : set) v.goodp = v.p; } public void rebuild() { /*vertices.rebuild();*/ } @@ -73,21 +125,144 @@ public class Mesh implements Iterable { } + public void subdivide() { + for (Vertex v : vertices()) v.original = true; + HashSet edges = new HashSet(); + HashSet flip = new HashSet(); + HashSet tris = new HashSet(); + int count = 0; + for (T t : this) { + tris.add(t); + edges.add(t.e1()); + edges.add(t.e2()); + edges.add(t.e3()); + count++; + } + System.out.println("triangles="+count); + count = 0; + for(E e : edges) { + if (e.destroyed || e.shattered) continue; + e.shatter().edge = true; + for(E ex : (Iterable)e.getBoundPeers()) { + Vertex m = nearest(ex.midpoint()); + m.edge = true; + E e3 = ex.p1.getE(m).next; + if (e3.p2.original) + flip.add(e3); + } + } + + int i=0; + + for(E e : flip) { + e.flip(); + System.out.println("flip!"); + i++; + } + + System.out.println("count="+count); + + rebindPoints(); + HashSet verts = new HashSet(); + for(Vertex v : vertices()) verts.add(v); + for (Vertex v : verts) + v.clearWish(); + for (Vertex v : verts) { + if (v.edge) { + for(E e = v.e; e!=null; e=e.pair.next==v.e?null:e.pair.next) { + if (e.p2.original) { + v.wish(e.p2); + v.wish(e.p2); + v.wish(e.p2); + v.wish(e.p2); + } + } + for(E e = v.e; e!=null; e=e.pair.next==v.e?null:e.pair.next) { + for(E e2 = e.p2.e; e2!=null; e2=e2.pair.next==e.p2.e?null:e2.pair.next) { + if (e2.p2.original) { + v.wish(e.p2); + } + } + } + } + } + for (Vertex v : verts) + v.grantWish(); + System.out.println("-------------------------------------------------------------------"); + /* + for (Vertex v : verts) { + if (v.original) { + int n=0; + for(E e = v.e; e!=null; e=e.pair.next==v.e?null:e.pair.next) { + n++; + v.wish(e.midpoint()); + v.wish(e.midpoint()); + v.wish(e.next.pair.t.centroid()); + } + v.avgWish(); + v.wishes = 3; + for(int j=0; j)getBoundPeers()) { + if (v==this) continue; + if (v.wishes==0) continue; + Point p = this.getBindingMatrix(v).times(v.wish.minus(Point.ZERO).div(v.wishes).plus(Point.ZERO)); + wish = p.minus(Point.ZERO).times(v.wishes).plus(wish); + wishes += v.wishes; + v.clearWish(); + } + if (wishes==0) return; + Vec d = wish.minus(Point.ZERO).div(wishes).plus(Point.ZERO).minus(getPoint()); + move(d, false); + clearWish(); + } + public void avgWish() { + if (wishes==0) return; + wish = wish.minus(Point.ZERO).div(wishes).plus(Point.ZERO); + wishes = 1; + } + private boolean illegal = false; + public boolean visible = false; + public Point getPoint() { return p; } public float error() { return olderror; } private Vertex(Point p) { this.p = p; this.goodp = p; + this.oldp = p; if (vertices.get(p) != null) throw new Error(); vertices.add(this); } @@ -98,6 +273,17 @@ public class Mesh implements Iterable { for(E e = this.e; e!=null; e=e.pair.next==this.e?null:e.pair.next) e.t.reinsert(); } + // the average of all adjacent points + public Point recenter() { + int count = 0; + Vec vec = Vec.ZERO; + for(E e = this.e; e!=null; e=e.pair.next==this.e?null:e.pair.next) { + vec = vec.plus(e.getOther(this).getPoint().minus(Point.ZERO)); + count++; + } + return Point.ZERO.plus(vec.div(count)); + } + public float olderror = 0; public void setError(float nerror) { error -= olderror; @@ -105,6 +291,22 @@ public class Mesh implements Iterable { error += olderror; } + /* + public Vertex hack(GL gl, Point mouse) { + double dist = Double.MAX_VALUE; + Vertex cur = null; + for(E e = this.e; e!=null; e=e.pair.next==this.e?null:e.pair.next) { + Vertex v = e.getOther(this); + double dist2 = v.getPoint().glProject(gl).distance(mouse); + if ((cur==null || dist2 < dist) && v.visible) { + dist = dist2; + cur = v; + } + } + return cur; + } + */ + public float averageTriangleArea() { int count = 0; float ret = 0; @@ -131,12 +333,17 @@ public class Mesh implements Iterable { m = m.plus(e.t.norm().fundamentalQuadric(e.t.centroid())); count++; } + if (count > 0) { + m = m.plus(norm().fundamentalQuadric(this.p).times(count)); + count *= 2; + } return m.times(1/(float)count); } public HasQuadric nearest() { return error_against==null ? null : error_against.vertices.nearest(p, this); } public void computeError() { if (error_against==null) return; + if (nearest_in_other_mesh == null && nearest()==null) return; float nerror = nearest_in_other_mesh != null ? nearest_in_other_mesh.fundamentalQuadric().preAndPostMultiply(p) @@ -144,22 +351,45 @@ public class Mesh implements Iterable { if (quadric_count != 0) nerror = (nerror + quadric.preAndPostMultiply(p))/(quadric_count+1); + if (!immutableVertices && quadric_count == 0) { + //nerror = Math.max(nerror, 0.4f); + //nerror *= 2; + } + //System.out.println(nerror); for(E e = this.e; e!=null; e=e.pair.next==this.e?null:e.pair.next) { - double ang = Math.abs(e.dihedralAngle()); + double ang = e.dihedralAngle(); if (ang > Math.PI) throw new Error(); + if (ang < -Math.PI) throw new Error(); float minangle = (float)(Math.PI * 0.8); + //nerror += ((ang / Math.PI)*(ang/Math.PI)) * e.length() * 0.05; + + nerror += (1-e.t.quality())*0.0001; if (ang > minangle) nerror += (ang - minangle); + + //System.out.println(((ang / Math.PI)*(ang/Math.PI)) * 0.000001); /* if (e.t.aspect() < 0.2) { nerror += (0.2-e.t.aspect()) * 10; } */ } + if (!immutableVertices) { + Vertex n = (Vertex)nearest(); + float d = norm().dot(n.norm()); + if (d > 1 || d < -1) throw new Error(); + if (d >= 0) { + nerror *= (2.0f - d); + } else { + nerror += 0.0003 * (2.0f + d); + nerror *= (2.0f + d); + } + } setError(nerror); } - public boolean move(Matrix m, boolean ignoreProblems) { + public boolean move(Vec vv, boolean ignoreProblems) { + boolean good = true; // t1' = M * t1 @@ -167,33 +397,82 @@ public class Mesh implements Iterable { // t2' = t2.getMatrix(t1) * M * t1 // t1 = t1.getMatrix(t2) * t2 // M * t1 = M * t1.getMatrix(t2) * t2 - for(Vertex v : (Iterable)getBoundPeers()) - good &= v.transform(v.getBindingMatrix(this).times(m).times(this.p), - ignoreProblems); - for(Vertex v : (Iterable)getBoundPeers()) - if (good || ignoreProblems) v.reComputeErrorAround(); - else v.transform(v.oldp, true); + if (bindingGroup!=null && this != bindingGroup.getMaster()) { + Matrix m2 = getBindingMatrix(bindingGroup.getMaster()); + Vec v2 = m2.times(vv.plus(getPoint())).minus(m2.times(getPoint())); + return ((Vertex)bindingGroup.getMaster()).move(v2, ignoreProblems); + } + + Point op = this.p; + Point pp = vv.plus(getPoint()); + if (bindingGroup != null) { + /* + for(int i=0; i<20 ; i++) { + Point v2 = getConstraint().times(pp); + pp = pp.midpoint(v2); + //System.out.println(m.minus(m2)); + } + */ + //pp = getConstraint().times(pp); + } + //pp = pp.minus(op).norm().times(vv.mag()).plus(op); + ok = false; + Point pt = pp; + for(Vertex v : (Iterable)getBoundPeers()) { + Point pt2 = v.getBindingMatrix(this).times(pt); + /* + if (Math.abs( v.p.minus(pt2).mag() / pt.minus(op).mag() ) > 5) + throw new Error(v.p+" "+pt2+"\n"+op+" "+pt+"\n"+v.getBindingMatrix(this)); + if (Math.abs( v.p.minus(pt2).mag() / pt.minus(op).mag() ) < 1/5) throw new Error(); + */ + good &= v.transform(pt2, ignoreProblems, v.getBindingMatrix(this)); + } + if (!good && !ignoreProblems) { + for(Vertex v : (Iterable)getBoundPeers()) + v.transform(v.oldp, true, null); + } + + for(Vertex v : (Iterable)getBoundPeers()) + v.recomputeFundamentalQuadricIfNeighborChanged(); + for(Vertex v : (Iterable)getBoundPeers()) + v.reComputeErrorAround(); + ok = true; return good; } + public boolean ok = true; /** does NOT update bound pairs! */ - private boolean transform(Point newp, boolean ignoreProblems) { + private boolean transform(Point newp, boolean ignoreProblems, Matrix yes) { this.oldp = this.p; if (immutableVertices) throw new Error(); unApplyQuadricToNeighbor(); + + boolean illegalbefore = illegal; + illegal = false; + /* + if (this.p.minus(newp).mag() > 0.1 && !ignoreProblems) { + try { + throw new Exception(""+this.p.minus(newp).mag()+" "+ignoreProblems+" "+yes); + } catch(Exception e) { + e.printStackTrace(); + } + illegal = true; + } + */ + this.p = newp; reinsert(); applyQuadricToNeighbor(); if (!ignoreProblems) { - illegal = false; checkLegality(); } - for(E e = this.e; e!=null; e=e.pair.next==this.e?null:e.pair.next) e.p2.quadricStale = true; - return !illegal; + for(E e = this.e; e!=null; e=e.pair.next==this.e?null:e.pair.next) + e.p2.quadricStale = true; + return !illegal || (illegalbefore && illegal); } public void checkLegality() { @@ -201,7 +480,7 @@ public class Mesh implements Iterable { for(E e = this.e; e!=null; e=e.pair.next==this.e?null:e.pair.next) { if (Math.abs(e.dihedralAngle()) > (Math.PI * 0.9) || Math.abs(e.next.dihedralAngle()) > (Math.PI * 0.9)) illegal = true; - if (e.t.aspect() < 0.1) illegal = true; + if (e.t.aspect() < 0.2) illegal = true; } */ if (!illegal) triangles.range(oldp, this.p, (Visitor)this); @@ -231,6 +510,7 @@ public class Mesh implements Iterable { return !illegal; } + public E getEdge() { return e; } public E getFreeIncident() { E ret = getFreeIncident(e, e); if (ret != null) return ret; @@ -252,8 +532,14 @@ public class Mesh implements Iterable { return getE(v); } public E getE(Vertex p2) { - for(E e = this.e; e!=null; e=e.pair.next==this.e?null:e.pair.next) + if (this.e!=null && this!=this.e.p1 && this!=this.e.p2) throw new RuntimeException(); + int i=0; + for(E e = this.e; e!=null; e=e.pair.next==this.e?null:e.pair.next) { if (e.p1 == this && e.p2 == p2) return e; + i++; + e.sanity(); + if (e.destroyed) throw new RuntimeException("fark " + i + " " + e.prev + " " + (e.prev.next==e) + " " + e.prev.destroyed); + } return null; } @@ -272,68 +558,90 @@ public class Mesh implements Iterable { public void bindTo(Vertex p) { bindTo(Matrix.ONE, p); } } - public class BindingGroup { - private HashSet set = new HashSet(); - public BindingGroup bind_others; - public BindingGroup other() { return bind_others; } - public BindingGroup(BindingGroup bind_others) { this.bind_others = bind_others; } - public BindingGroup() { this.bind_others = new BindingGroup(this); } - public BindingGroup(E e) { this(); set.add(e); } - public void add(E e) { - if (set.contains(e)) return; - set.add(e); - BindingGroup e_bind_peers = e.bind_peers; - BindingGroup e_bind_to = e.bind_to; - e.bind_peers = this; - e.bind_to = bind_others; - for (E epeer : e_bind_peers.set) add(epeer); - for (E eother : e_bind_to.set) bind_others.add(eother); - /* - for(E eother : bind_others.set) { - if (e.next.bind_to.set.contains(eother.prev)) { - e.next.next.bindEdge(eother.prev.prev); - } - if (e.prev.bind_to.set.contains(eother.next)) { - e.prev.prev.bindEdge(eother.next.next); - } - } - */ - } - public void dobind(E e) { - for(E ebound : set) { - e.p1.bindTo(Matrix.ONE, ebound.p2); - e.p2.bindTo(Matrix.ONE, ebound.p1); - } - } - } /** [UNIQUE] an edge */ public final class E extends HasBindingGroup implements Comparable { + public void sanity() { + if (destroyed) return; + if (pair!=null && (pair.p1!=p2 || pair.p2!=p1)) throw new RuntimeException(); + if (next!=null && next.p1!=p2) throw new RuntimeException(); + if (prev!=null && prev.p2!=p1) throw new RuntimeException(); + } + public final Vertex p1, p2; T t; // triangle to our "left" E prev; // previous half-edge E next; // next half-edge E pair; // partner half-edge - public BindingGroup bind_peers = new BindingGroup(this); - public BindingGroup bind_to = bind_peers.other(); boolean shattered = false; public boolean intersects(T t) { return t.intersects(p1.p, p2.p); } + public Segment getSegment() { return new Segment(p1.getPoint(), p2.getPoint()); } + + public void flip() { + // FIXME: coplanarity check needed + if (destroyed) return; + for (E e : (Iterable)getBoundPeers()) { + if (!e.pair.isBoundTo(pair)) throw new RuntimeException("cannot flip!"); + } + Vertex v1 = t.getOtherVertex(this); + Vertex v2 = pair.t.getOtherVertex(pair); + destroy(); + pair.destroy(); + T t1 = newT(v1, v2, p2); + T t2 = newT(v2, v1, p1); + t1.e1().sanity(); + t1.e2().sanity(); + t1.e3().sanity(); + t2.e1().sanity(); + t2.e2().sanity(); + t2.e3().sanity(); + + for (E e : (Iterable)getBoundPeers()) { + if (e==this) continue; + if (e.destroyed) continue; + Vertex v1e = e.t.getOtherVertex(e); + Vertex v2e = e.pair.t.getOtherVertex(e.pair); + e.destroy(); + e.pair.destroy(); + if (v1e.getE(v2e)!=null) throw new RuntimeException(); + newT(v1e, v2e, e.p2).red = true; + newT(v2e, v1e, e.p1).red = true; + v2e.getE(v1e).bindTo(e.getBindingMatrix(this), v1.getE(v2)); + v1e.getE(v2e).bindTo(e.pair.getBindingMatrix(this.pair), v2.getE(v1)); + } + + } + public void bindingGroupChanged(edu.berkeley.qfat.geom.BindingGroup newBindingGroup_) { edu.berkeley.qfat.geom.BindingGroup newBindingGroup = (edu.berkeley.qfat.geom.BindingGroup)newBindingGroup_; if (newBindingGroup==null) return; if (this==newBindingGroup.getMaster()) return; - for(E eother : (Iterable)newBindingGroup) { + HashSet nbg = new HashSet(); + for(E eother : (Iterable)newBindingGroup) nbg.add(eother); + for(E eother : nbg) { if (next==null || prev==null) continue; if (eother.next==null || eother.prev==null) continue; + if (next.isBoundTo(eother.pair.prev.pair) && !prev.isBoundTo(eother.pair.next.pair)) prev.bindTo(next.getBindingMatrix(eother.pair.prev.pair), eother.pair.next.pair); if (!next.isBoundTo(eother.pair.prev.pair) && prev.isBoundTo(eother.pair.next.pair)) next.bindTo(prev.getBindingMatrix(eother.pair.next.pair), eother.pair.prev.pair); + + /* + if (next.isBoundTo(eother.prev) && !prev.isBoundTo(eother.next)) + prev.bindTo(next.getBindingMatrix(eother.prev), eother.next); + if (!next.isBoundTo(eother.prev) && prev.isBoundTo(eother.next)) + next.bindTo(prev.getBindingMatrix(eother.next), eother.prev); + */ + if (next.isBoundTo(eother.next) && !prev.isBoundTo(eother.prev)) + prev.bindTo(next.getBindingMatrix(eother.next), eother.prev); + if (!next.isBoundTo(eother.next) && prev.isBoundTo(eother.prev)) + next.bindTo(prev.getBindingMatrix(eother.prev), eother.next); } } @@ -348,7 +656,6 @@ public class Mesh implements Iterable { } public float comparator() { return length(); - //return t==null?0:(1/t.aspect()); } public int compareTo(E e) { return e.comparator() > comparator() ? 1 : -1; @@ -358,8 +665,6 @@ public class Mesh implements Iterable { pair._bindEdge(e.pair, m); } public void _bindEdge(E e, Matrix m) { - //bind_to.add(e); - e = e.pair; /* //assumes edges are identical length at binding time @@ -379,22 +684,25 @@ public class Mesh implements Iterable { System.out.println(" " + p1.p + " " + m.times(e.p1.p)); System.out.println(" " + p2.p + " " + m.times(e.p2.p)); */ + /* if (m.times(e.p1.p).minus(p1.p).mag() > EPSILON) throw new Error(); if (m.times(e.p2.p).minus(p2.p).mag() > EPSILON) throw new Error(); + */ this.bindTo(m, e); } public void dobind() { - //bind_to.dobind(this); for(E e : (Iterable)getBoundPeers()) { if (e==this) continue; p1.bindTo(getBindingMatrix(e), e.p1); p2.bindTo(getBindingMatrix(e), e.p2); + e.p1.setConstraint(getConstraint()); + e.p2.setConstraint(getConstraint()); } } - public Point shatter() { - if (shattered || destroyed) return null; + public Vertex shatter() { + if (shattered || destroyed) return nearest(midpoint()); shattered = true; E first = null; E firste = null; @@ -408,14 +716,14 @@ public class Mesh implements Iterable { Point mid = e.midpoint(); Vertex r = e.next.p2; Vertex l = e.pair.next.p2; - e.destroy(); - e.pair.destroy(); - newT(r.p, e.p1.p, mid, null, 0); - newT(r.p, mid, e.p2.p, null, 0); - newT(l.p, mid, e.p1.p, null, 0); - newT(l.p, e.p2.p, mid, null, 0); - /* - */ + if (!e.destroyed) { + e.destroy(); + e.pair.destroy(); + newT(r.p, e.p1.p, mid, null, 0); + newT(r.p, mid, e.p2.p, null, 0); + newT(l.p, mid, e.p1.p, null, 0); + newT(l.p, e.p2.p, mid, null, 0); + } } for(E e : (Iterable)getBoundPeers()) { Point mid = e.midpoint(); @@ -430,9 +738,12 @@ public class Mesh implements Iterable { e.p1.getE(mid).pair. bindTo(e.getBindingMatrix(firste), first.pair); e.p2.getE(mid).pair. bindTo(e.getBindingMatrix(firste), firstq); e.p2.getE(mid).pair.pair.bindTo(e.getBindingMatrix(firste), firstq.pair); - //e.p1.getE(mid).pair.prev.bindTo(e.pair.getBindingMatrix(firstx), first.pair.prev); } - return null; + /* + first.setConstraint(firste.getConstraint()); + firstq.setConstraint(firste.getConstraint()); + */ + return nearest(midpoint()); } public boolean destroyed = false; @@ -457,23 +768,43 @@ public class Mesh implements Iterable { pair.next.t = null; pair.prev.t = null; - this.bind_to = null; - pair.bind_to = null; - this.bind_peers = null; - pair.bind_peers = null; pair.prev.next = next; next.prev = pair.prev; prev.next = pair.next; - pair.next = prev; - if (p1.e == this) p1.e = prev.next; - if (pair.p1.e == pair) pair.p1.e = pair.prev.next; + pair.next.prev = prev; + + if (p1.e == this) p1.e = pair.next; + if (pair.p1.e == pair) pair.p1.e = next; + + if (p2.e == this) throw new RuntimeException(); + if (pair.p2.e == pair) throw new RuntimeException(); + + /* + next = pair; + prev = pair; + pair.next = this; + pair.prev = this; + */ + + /* + pair.prev = null; + pair.next = null; + next = null; + prev = null; + */ + + /* + sanity(); + next.sanity(); + prev.sanity(); + pair.sanity(); + */ } private void sync() { this.prev.next = this; this.next.prev = this; this.pair.pair = this; - bind_peers.add(this); if (this.next.p1 != p2) throw new Error(); if (this.prev.p2 != p1) throw new Error(); if (this.p1.e == null) this.p1.e = this; @@ -486,7 +817,12 @@ public class Mesh implements Iterable { public double dihedralAngle() { Vec v1 = t.norm().times(-1); Vec v2 = pair.t.norm().times(-1); - return Math.acos(v1.norm().dot(v2.norm())); + double prod = v1.norm().dot(v2.norm()); + prod = Math.min(1,prod); + prod = Math.max(-1,prod); + double ret = Math.acos(prod); + if (Double.isNaN(ret)) throw new Error("nan! " + prod); + return ret; } /** angle between this half-edge and the next */ @@ -496,10 +832,16 @@ public class Mesh implements Iterable { return Math.acos(v1.norm().dot(v2.norm())); } + public Vertex getOther(Vertex v) { + if (this.p1 == v) return p2; + if (this.p2 == v) return p1; + throw new Error(); + } + public void makeAdjacent(E e) { if (this.next == e) return; - if (p2 != e.p1) throw new Error("cannot make adjacent -- no shared vertex"); - if (t != null || e.t != null) throw new Error("cannot make adjacent -- edges not both free"); + if (p2 != e.p1) throw new Error("cannot make adjacent -- no shared vertex: " + this + " " + e); + if (t != null || e.t != null) throw new Error("cannot make adjacent -- edges not both free " + t + " " + e.t); E freeIncident = p2.getFreeIncident(e, this); @@ -536,6 +878,7 @@ public class Mesh implements Iterable { this.p1 = prev.p2; this.p2 = p2; this.prev = prev; + if (prev.destroyed) throw new RuntimeException(); if (p2.getE(p1) != null) throw new Error(); if (p2.e==null) { this.next = this.pair = new E(this, this, prev.next); @@ -555,6 +898,7 @@ public class Mesh implements Iterable { public E(E prev, E pair, E next) { this.p1 = prev.p2; this.p2 = next.p1; + if (prev.destroyed) throw new RuntimeException(); this.prev = prev; this.next = next; this.pair = pair; @@ -580,7 +924,25 @@ public class Mesh implements Iterable { if (v2 != null) return new E(v2.getFreeIncident(), p1).pair; return new E(p1, p2); } + public boolean coalesce = false; + private static float round(float f) { + return Math.round(f*1000)/1000f; + } + public T newT(HasPoint p1, HasPoint p2, HasPoint p3) { + return newT(p1.getPoint(), p2.getPoint(), p3.getPoint(), null, 0); + } public T newT(Point p1, Point p2, Point p3, Vec norm, int colorclass) { + if (coalesce) { + + for(Vertex v : vertices) { if (p1.distance(v.p) < EPSILON) { p1 = v.p; break; } } + for(Vertex v : vertices) { if (p2.distance(v.p) < EPSILON) { p2 = v.p; break; } } + for(Vertex v : vertices) { if (p3.distance(v.p) < EPSILON) { p3 = v.p; break; } } + /* + p1 = new Point(round(p1.x), round(p1.y), round(p1.z)); + p2 = new Point(round(p2.x), round(p2.y), round(p2.z)); + p3 = new Point(round(p3.x), round(p3.y), round(p3.z)); + */ + } if (norm != null) { Vec norm2 = p3.minus(p1).cross(p2.minus(p1)); float dot = norm.dot(norm2); @@ -602,12 +964,122 @@ public class Mesh implements Iterable { return ret; } + private int max_serial = 0; /** [UNIQUE] a triangle (face) */ public final class T extends Triangle { public final E e1; public final int color; public final int colorclass; + public boolean red = false; + public boolean old = false; + + public final int serial = max_serial++; + public boolean occluded; + + public Point shatter() { + if (destroyed) return null; + E e = e1(); + + HashSet forward = new HashSet(); + HashSet backward = new HashSet(); + HashSet both = new HashSet(); + + for(E eb : (Iterable)e.getBoundPeers()) { + if (eb==e) continue; + if (eb.next.isBoundTo(e.next) && eb.prev.isBoundTo(e.prev)) { + forward.add(eb); + both.add(eb); + } + if (eb.pair.next.pair.isBoundTo(e.prev) && eb.pair.prev.pair.isBoundTo(e.next)) { + backward.add(eb.pair); + both.add(eb.pair); + } + } + + Vertex v1 = e.t.v1(); + Vertex v2 = e.t.v2(); + Vertex v3 = e.t.v3(); + Point c = e.t.centroid(); + E e_next = e.next; + E e_prev = e.prev; + e.t.destroy(); + newT(v1, v2, c); + newT(c, v2, v3); + newT(v3, v1, c); + + // FIXME: forward too + for(E ex : backward) { + Vertex v1x = ex.t.v1(); + Vertex v2x = ex.t.v2(); + Vertex v3x = ex.t.v3(); + Point cx = ex.t.centroid(); + E ex_next = ex.next; + E ex_prev = ex.prev; + ex.t.destroy(); + newT(v1x, v2x, cx); + newT(cx, v2x, v3x); + newT(v3x, v1x, cx); + + // FIXME: i have no idea if this is right + e.next.bindTo(e.getBindingMatrix(ex.pair), ex.prev); + e.prev.bindTo(e.getBindingMatrix(ex.pair), ex.next); + e.next.pair.bindTo(e.getBindingMatrix(ex.pair), ex.prev.pair); + e.prev.pair.bindTo(e.getBindingMatrix(ex.pair), ex.next.pair); + + e_next.next.bindTo(e_next.getBindingMatrix(ex_prev.pair), ex_prev.prev.pair); + e_next.prev.bindTo(e_next.getBindingMatrix(ex_prev.pair), ex_prev.next.pair); + + e_prev.next.bindTo(e_prev.getBindingMatrix(ex_next.pair), ex_next.prev.pair); + e_prev.prev.bindTo(e_prev.getBindingMatrix(ex_next.pair), ex_next.next.pair); + } + + /* + + E first = null; + E firste = null; + E firstx = null; + E firstq = null; + for(E e : (Iterable)getBoundPeers()) { + E enext = e.next; + E eprev = e.prev; + E pnext = e.pair.next; + E pprev = e.pair.prev; + Point mid = e.midpoint(); + Vertex r = e.next.p2; + Vertex l = e.pair.next.p2; + if (!e.destroyed) { + e.destroy(); + e.pair.destroy(); + newT(r.p, e.p1.p, mid, null, 0); + newT(r.p, mid, e.p2.p, null, 0); + newT(l.p, mid, e.p1.p, null, 0); + newT(l.p, e.p2.p, mid, null, 0); + } + } + for(E e : (Iterable)getBoundPeers()) { + Point mid = e.midpoint(); + if (first==null) { + first = e.p1.getE(mid); + firste = e; + firstx = e.pair; + firstq = e.p2.getE(mid).pair; + continue; + } + e.p1.getE(mid). bindTo(e.getBindingMatrix(firste), first); + e.p1.getE(mid).pair. bindTo(e.getBindingMatrix(firste), first.pair); + e.p2.getE(mid).pair. bindTo(e.getBindingMatrix(firste), firstq); + e.p2.getE(mid).pair.pair.bindTo(e.getBindingMatrix(firste), firstq.pair); + } + */ + /* + first.setConstraint(firste.getConstraint()); + firstq.setConstraint(firste.getConstraint()); + */ + return null; + } + + T(E e1, int colorclass) { this.e1 = e1; E e2 = e1.next; @@ -645,31 +1117,51 @@ public class Mesh implements Iterable { public boolean hasE(E e) { return e1==e || e1.next==e || e1.prev==e; } public boolean has(Vertex v) { return v1()==v || v2()==v || v3()==v; } + public Vertex getOtherVertex(E e) { + if (!hasE(e)) throw new RuntimeException(); + if (!e.has(v1())) return v1(); + if (!e.has(v2())) return v2(); + if (!e.has(v3())) return v3(); + throw new RuntimeException(); + } + public void removeFromRTree() { triangles.remove(this); } public void addToRTree() { triangles.insert(this); } - public void destroy() { triangles.remove(this); } + public void destroy() { + if (e1 != null) { + e1.t = null; + e1.next.t = null; + e1.prev.t = null; + } + triangles.remove(this); + destroyed = true; + } public void reinsert() { triangles.remove(this); triangles.add(this); } + private boolean destroyed = false; + public boolean destroyed() { return destroyed; } + public boolean shouldBeDrawn() { - /* + if (e1().bindingGroupSize() <= 1) return false; if (e2().bindingGroupSize() <= 1) return false; if (e3().bindingGroupSize() <= 1) return false; - */ + return true; } + public void glTriangle(GL gl, Matrix m) { + gl.glPushName(serial); + gl.glBegin(GL.GL_TRIANGLES); + glVertices(gl, m); + gl.glEnd(); + gl.glPopName(); + } + /** issue gl.glVertex() for each of the triangle's points */ - public void glVertices(GL gl) { + public void glVertices(GL gl, Matrix m) { if (!shouldBeDrawn()) return; - norm().glNormal(gl); - Point p1 = v1().goodp; - Point p2 = v2().goodp; - Point p3 = v3().goodp; - p1.glVertex(gl); - p2.glVertex(gl); - p3.glVertex(gl); + super.glVertices(gl, m); } - } }