Set External Bounding Box

Author: alja

graf3d/eve7/src/REveBoxSet.cxx

@@ -381,6 +381,9 @@ Int_t REveBoxSet::WriteCoreJson(nlohmann::json &j, Int_t rnr_offset)
 
 void REveBoxSet::BuildRenderData()
 {
+   if (fPlex.Size() == 0)
+      return;
+
    fRenderData = std::make_unique<REveRenderData>("makeBoxSet", fPlex.Size() * 24, 0, fPlex.Size());
 
    REveChunkManager::iterator bi(fPlex);
@@ -407,6 +410,14 @@ void REveBoxSet::BuildRenderData()
       // printf(" >>> resize render data %d \n", 4 * fTexX * fTexY);
       fRenderData->ResizeV(4 * fTexX * fTexY);
    }
+
+   // save bbox in render data normals
+   ComputeBBox();
+   float* bb = GetBBox();
+   fRenderData->PushN(bb[0], bb[1], bb[2]);
+   fRenderData->PushN(bb[3], bb[4], bb[5]);
+
+   REveElement::BuildRenderData();
 }
 
 ////////////////////////////////////////////////////////////////////////////////

graf3d/eve7/src/REvePointSet.cxx

@@ -239,16 +239,24 @@ void REvePointSet::BuildRenderData()
    if (fSize > 0)
    {
       if (gEve->IsRCore()) {
-         fRenderData = std::make_unique<REveRenderData>("makeHit", 4*fTexX*fTexY);
+         fRenderData = std::make_unique<REveRenderData>("makeHit", 4*fTexX*fTexY, 6);
          for (int i = 0; i < fSize; ++i) {
             fRenderData->PushV(&fPoints[i].fX, 3);
             fRenderData->PushV(0);
          }
          fRenderData->ResizeV(4*fTexX*fTexY);
+
+         // save bbox in render data normals
+         ComputeBBox();
+         float* bb = GetBBox();
+         fRenderData->PushN(bb[0], bb[1], bb[2]);
+         fRenderData->PushN(bb[3], bb[4], bb[5]);
       } else {
          fRenderData = std::make_unique<REveRenderData>("makeHit", 3*fSize);
          fRenderData->PushV(&fPoints[0].fX, 3*fSize);
       }
+
+      REveElement::BuildRenderData();
    }
 }
 

ui5/eve7/lib/EveElementsRCore.js

@@ -885,6 +885,10 @@ sap.ui.define(['rootui5/eve7/lib/EveManager'], function (EveManager)
             rnr_data.vtxBuff, hit.fTexX, hit.fTexY,
             txName);
 
+         // bounding box
+         let bb = rnr_data.nrmBuff;
+         s.geometry.setExternalBoundingBox(new RC.Box3(new RC.Vector3(bb[0], bb[2], bb[4]), new RC.Vector3(bb[1], bb[3], bb[5])));
+
          this.RcPickable(hit, s);
 
          return s;
@@ -1251,10 +1255,17 @@ sap.ui.define(['rootui5/eve7/lib/EveManager'], function (EveManager)
       {
          if (this.TestRnr("boxset", boxset, rnr_data)) return null;
          // use instancing if texture coordinates
+         let mesh;
          if (boxset.instanced === true)
-            return this.makeBoxSetInstanced(boxset, rnr_data);
+            mesh = this.makeBoxSetInstanced(boxset, rnr_data);
          else
-            return this.makeFreeBoxSet(boxset, rnr_data);
+            mesh = this.makeFreeBoxSet(boxset, rnr_data);
+
+         // bounding box
+         let bb = rnr_data.nrmBuff;
+         mesh.geometry.setExternalBoundingBox(new RC.Box3(new RC.Vector3(bb[0], bb[2], bb[4]), new RC.Vector3(bb[1], bb[3], bb[5])));
+
+         return mesh;
       }
 
       makeFreeBoxSet(boxset, rnr_data)