This BSP split and simplify thing is stupid, but a hard-coded limit

on the number of pieces that we know how to reassemble is even
stupider. Now dynamically allocated.

[git-p4: depot-paths = "//depot/solvespace/": change = 1837]

mesh.cpp

@@ -51,15 +51,14 @@ void SMesh::GetBounding(Vector *vmax, Vector *vmin) {
 }
 
 void SMesh::Simplify(int start) {
-#define MAX_TRIANGLES 2000
+    int maxTriangles = (l.n - start) + 10;
-    if(l.n - start > MAX_TRIANGLES) oops();
 
     STriMeta meta = l.elem[start].meta;
 
-    STriangle tout[MAX_TRIANGLES];
+    STriangle *tout = (STriangle *)AllocTemporary(maxTriangles*sizeof(*tout));
     int toutc = 0;
 
-    Vector n, conv[MAX_TRIANGLES*3];
+    Vector n, *conv = (Vector *)AllocTemporary(maxTriangles*3*sizeof(*conv));
     int convc = 0;
 
     int start0 = start;
@@ -181,6 +180,8 @@ void SMesh::Simplify(int start) {
     for(i = 0; i < toutc; i++) {
         AddTriangle(&(tout[i]));
     }
+    FreeTemporary(tout);
+    FreeTemporary(conv);
 }
 
 void SMesh::AddAgainstBsp(SMesh *srcm, SBsp3 *bsp3) {

solvespace.h

@@ -101,6 +101,7 @@ DWORD CnfThawDWORD(DWORD v, char *name);
 float CnfThawFloat(float v, char *name);
 
 void *AllocTemporary(int n);
+void FreeTemporary(void *p);
 void FreeAllTemporary(void);
 void *MemRealloc(void *p, int n);
 void *MemAlloc(int n);

win32/w32main.cpp

@@ -120,6 +120,9 @@ void *AllocTemporary(int n)
     if(!v) oops();
     return v;
 }
+void FreeTemporary(void *p) {
+    HeapFree(Temp, HEAP_NO_SERIALIZE, p);
+}
 void FreeAllTemporary(void)
 {
     if(Temp) HeapDestroy(Temp);