Changeset 1981 for GTP/trunk/Lib/Vis/Preprocessing

Timestamp:

01/15/07 16:28:59 (18 years ago)

Author:

mattausch

Message:

 

Location:

GTP/trunk/Lib/Vis/Preprocessing/src

Files:

• AxisAlignedBox3.cpp (modified) (1 diff)
• GvsPreprocessor.cpp (modified) (1 diff)
• Mesh.cpp (modified) (1 diff)
• ViewCellsManager.cpp (modified) (5 diffs)
• ViewCellsManager.h (modified) (3 diffs)

GTP/trunk/Lib/Vis/Preprocessing/src/AxisAlignedBox3.cpp

@@ -2353 +2353 @@
 }
 
-
-}
-
+/*
+int inline GetIntersection(const float fDst1, 
+                                                   const float fDst2, 
+                                                   const Vector3 p1, 
+                                                   const Vector3 p2, 
+                                                   const Vector3 &hit) 
+{
+        if ((fDst1 * fDst2) >= 0.0f) 
+                return 0;
+    
+        if (fDst1 == fDst2) 
+                return 0; 
+    
+        hit = p1 + (p2 - p1) * (-fDst1 / (fDst2 - fDst1));
+        
+        return 1;
+}
+
+
+int inline InBox( CVec3 Hit, CVec3 B1, CVec3 B2, const int Axis) {
+if ( Axis==1 && Hit.z > B1.z && Hit.z < B2.z && Hit.y > B1.y && Hit.y < B2.y) return 1;
+if ( Axis==2 && Hit.z > B1.z && Hit.z < B2.z && Hit.x > B1.x && Hit.x < B2.x) return 1;
+if ( Axis==3 && Hit.x > B1.x && Hit.x < B2.x && Hit.y > B1.y && Hit.y < B2.y) return 1;
+return 0;
+}
+
+// returns true if line (L1, L2) intersects with the box (B1, B2)
+// returns intersection point in Hit
+int CheckLineBox( CVec3 B1, CVec3 B2, CVec3 L1, CVec3 L2, CVec3 &Hit)
+{
+if (L2.x < B1.x && L1.x < B1.x) return false;
+if (L2.x > B2.x && L1.x > B2.x) return false;
+if (L2.y < B1.y && L1.y < B1.y) return false;
+if (L2.y > B2.y && L1.y > B2.y) return false;
+if (L2.z < B1.z && L1.z < B1.z) return false;
+if (L2.z > B2.z && L1.z > B2.z) return false;
+if (L1.x > B1.x && L1.x < B2.x &&
+    L1.y > B1.y && L1.y < B2.y &&
+    L1.z > B1.z && L1.z < B2.z) 
+    {Hit = L1; 
+    return true;}
+if ( (GetIntersection( L1.x-B1.x, L2.x-B1.x, L1, L2, Hit) && InBox( Hit, B1, B2, 1 ))
+  || (GetIntersection( L1.y-B1.y, L2.y-B1.y, L1, L2, Hit) && InBox( Hit, B1, B2, 2 )) 
+  || (GetIntersection( L1.z-B1.z, L2.z-B1.z, L1, L2, Hit) && InBox( Hit, B1, B2, 3 )) 
+  || (GetIntersection( L1.x-B2.x, L2.x-B2.x, L1, L2, Hit) && InBox( Hit, B1, B2, 1 )) 
+  || (GetIntersection( L1.y-B2.y, L2.y-B2.y, L1, L2, Hit) && InBox( Hit, B1, B2, 2 )) 
+  || (GetIntersection( L1.z-B2.z, L2.z-B2.z, L1, L2, Hit) && InBox( Hit, B1, B2, 3 )))
+        return true;
+
+return false;
+}
+*/
+
+}
+

GTP/trunk/Lib/Vis/Preprocessing/src/GvsPreprocessor.cpp

@@ -445 +445 @@
         const float offset = 0.5f;
         const Vector3 newOrigin = newPoint - newDir * offset;
+
+        static Ray ray(newOrigin, newDir, Ray::LOCAL_RAY);
+        ray.Precompute();
+
+        // check if ray intersects view cell
+        if (mPerViewCell && !mCurrentViewCell->CastRay(ray))
+                return NULL;
 
         const SimpleRay simpleRay(newOrigin, newDir, SamplingStrategy::GVS, 1.0f);

GTP/trunk/Lib/Vis/Preprocessing/src/Mesh.cpp

@@ -220 +220 @@
                 faceIndex++) {
     hits += CastRayToFace(faceIndex,
-                                                                                                        ray,
-                                                                                                        nearestT,
-                                                                                                        nearestNormal,
-                                                                                                        nearestFace,
-                                                                                                        instance);
+                                                  ray,
+                                                  nearestT,
+                                                  nearestNormal,
+                                                  nearestFace,
+                                                  instance);
     if (mIsConvex && nearestFace != -1)
       break;

GTP/trunk/Lib/Vis/Preprocessing/src/ViewCellsManager.cpp

@@ -2292 +2292 @@
                 return 0.0f;
 
-        static Ray hray;
-        hray.Init(ray);
-
-        float tmin = 0, tmax = 1.0;
-
-        if (!GetViewSpaceBox().GetRaySegment(hray, tmin, tmax) || (tmin > tmax))
-        {
-                // cerr<<"ray outside view space box\n";
-                return 0;
-        }
-
-        Vector3 origin = hray.Extrap(tmin);
-        Vector3 termination = hray.Extrap(tmax);
-
-        // traverse the view space subdivision
-        if (!LineSegmentIntersects(origin, 
-                                                           termination, 
-                                                           currentViewCell))
-        {
-                return 0;
-        }
-        
         // optain pvs entry (can be different from hit object)
         Intersectable *terminationObj = GetIntersectable(ray, true);
@@ -2326 +2304 @@
         float c = 0.0f;
         if (terminationObj) 
-          c = ray.Length();
+                c = ray.Length();
+
         ray.mRelativePvsContribution = ray.mPvsContribution = c;
         return c;
@@ -5942 +5921 @@
                 mColorCode = 0; // 0 = random, 1 = export pvs
 
+                if (0)
                 mHierarchyManager->ExportObjectSpaceHierarchy(exporter, objects, 
                                                                                                           CLAMP_TO_BOX ? &bbox : NULL, maxRenderCost, false);
@@ -5979 +5959 @@
                 const float maxRenderCost = -1;
 
+                if (0)
                 mHierarchyManager->ExportObjectSpaceHierarchy(exporter, objects, 
                                                                                                           CLAMP_TO_BOX ? &bbox : NULL, maxRenderCost, false);
@@ -5992 +5973 @@
         }
 
-#if 0
-        // export final object partition
-        exporter = Exporter::GetExporter("final_object_partition.wrl");
-
-        if (exporter)
-        {
-                if (CLAMP_TO_BOX)
-                {       
-                        exporter->mClampToBox = true;   
-                }
-
-                const long starttime = GetTime();
-
-                // matt: hack for making visualization smaller in size
-                AxisAlignedBox3 bbox = mHierarchyManager->GetObjectSpaceBox();
-                bbox.Scale(scale);
-
-                cout << "exporting object space hierarchy ... ";
-                mHierarchyManager->ExportObjectSpaceHierarchy(exporter, objects, CLAMP_TO_BOX ? &bbox : NULL, -1);
-
-                delete exporter;
-                cout << "finished in " << TimeDiff(starttime, GetTime()) * 1e-3f << " secs" << endl;
-        }
-#endif
-
-        // visualization of the view cells
+        // visualization of the merged view cells
     if (0) 
         {       

GTP/trunk/Lib/Vis/Preprocessing/src/ViewCellsManager.h

@@ -141 +141 @@
                                                                          const bool storeViewCells);
 
-        /** Add sample contributions to the viewcells they intersect 
-        */
-        //void AddSampleContributions(const VssRayContainer &rays);
-  
-
         /** Computes sample contribution of a simgle ray to the view cells PVS.
                 @param ray finds intersections with view cells and holds the contribution
@@ -153 +148 @@
         */
         virtual float ComputeSampleContribution(VssRay &ray, 
-                                                                                        const bool addRays,
+                                                                                        const bool addContributions,
                                                                                         const bool storeViewCells);
 
@@ -159 +154 @@
         */
         virtual float ComputeSampleContribution(VssRay &ray, 
-                                                                                        const bool addRays,
+                                                                                        const bool addContributions,
                                                                                         ViewCell *currentViewCell);