enable mirror and invert flags for meshes.

3 files changed, 62 insertions, 11 deletions

diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index de32070da1..0328c09c9a 100644
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -1694,7 +1694,7 @@ LLVolume::LLVolume(const LLVolumeParams &params, const F32 detail, const BOOL ge
 
 	generate();
 	
-	if (mParams.getSculptID().isNull() && params.getSculptType() == LL_SCULPT_TYPE_NONE)
+	if (mParams.getSculptID().isNull() && mParams.getSculptType() == LL_SCULPT_TYPE_NONE)
 	{
 		createVolumeFaces();
 	}
@@ -2142,6 +2142,59 @@ BOOL LLVolume::unpackVolumeFaces(std::istream& is, S32 size)
 					(F32) t[1] / 65535.f * tc_range.mV[1] + min_tc.mV[1]);
 			}
 
+			
+			// modifier flags?
+			BOOL do_mirror = (mParams.getSculptType() & LL_SCULPT_FLAG_MIRROR);
+			BOOL do_invert = (mParams.getSculptType() &LL_SCULPT_FLAG_INVERT);
+			
+			
+			// translate to actions:
+			BOOL do_reflect_x = FALSE;
+			BOOL do_reverse_triangles = FALSE;
+			BOOL do_invert_normals = FALSE;
+			
+			if (do_mirror)
+			{
+				do_reflect_x = TRUE;
+				do_reverse_triangles = !do_reverse_triangles;
+			}
+			
+			if (do_invert)
+			{
+				do_invert_normals = TRUE;
+				do_reverse_triangles = !do_reverse_triangles;
+			}
+			
+			// now do the work
+
+			if (do_reflect_x)
+			{
+				for (S32 i = 0; i < face.mVertices.size(); i++)
+				{
+					face.mVertices[i].mPosition.mV[VX] *= -1.0f;
+					face.mVertices[i].mNormal.mV[VX] *= -1.0f;
+				}
+			}
+
+			if (do_invert_normals)
+			{
+				for (S32 i = 0; i < face.mVertices.size(); i++)
+				{
+					face.mVertices[i].mNormal *= -1.0f;
+				}
+			}
+
+			if (do_reverse_triangles)
+			{
+				for (U32 j = 0; j < face.mIndices.size(); j += 3)
+				{
+					// swap the 2nd and 3rd index
+					S32 swap = face.mIndices[j+1];
+					face.mIndices[j+1] = face.mIndices[j+2];
+					face.mIndices[j+2] = swap;
+				}
+			}
+
 		}
 	}
 
@@ -3838,7 +3891,7 @@ void LLVolume::generateSilhouetteVertices(std::vector<LLVector3> &vertices,
 	normals.clear();
 	segments.clear();
 
-	if (mParams.getSculptType() == LL_SCULPT_TYPE_MESH)
+	if ((mParams.getSculptType() & LL_SCULPT_TYPE_MASK) == LL_SCULPT_TYPE_MESH)
 	{
 		return;
 	}
@@ -5500,7 +5553,7 @@ BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
 	{
 		mIndices.resize(num_indices);
 
-		if (volume->getParams().getSculptType() != LL_SCULPT_TYPE_MESH)
+		if ((volume->getParams().getSculptType() & LL_SCULPT_TYPE_MASK) != LL_SCULPT_TYPE_MESH)
 		{
 			mEdge.resize(num_indices);
 		}
diff --git a/indra/llmath/llvolume.h b/indra/llmath/llvolume.h
index e3ab648fe3..0bc64f4487 100644
--- a/indra/llmath/llvolume.h
+++ b/indra/llmath/llvolume.h
@@ -183,12 +183,11 @@ const U8 LL_SCULPT_TYPE_SPHERE    = 1;
 const U8 LL_SCULPT_TYPE_TORUS     = 2;
 const U8 LL_SCULPT_TYPE_PLANE     = 3;
 const U8 LL_SCULPT_TYPE_CYLINDER  = 4;
-
-const U8 LL_SCULPT_TYPE_MASK      = LL_SCULPT_TYPE_SPHERE | LL_SCULPT_TYPE_TORUS | LL_SCULPT_TYPE_PLANE | LL_SCULPT_TYPE_CYLINDER;
-
-// need to change this (these) names
 const U8 LL_SCULPT_TYPE_MESH      = 5;
 
+const U8 LL_SCULPT_TYPE_MASK      = LL_SCULPT_TYPE_SPHERE | LL_SCULPT_TYPE_TORUS | LL_SCULPT_TYPE_PLANE |
+	LL_SCULPT_TYPE_CYLINDER | LL_SCULPT_TYPE_MESH;
+
 const U8 LL_SCULPT_FLAG_INVERT    = 64;
 const U8 LL_SCULPT_FLAG_MIRROR    = 128;
 
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index 4acf3cb6fb..3f1ddc0ee7 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -905,14 +905,13 @@ BOOL LLVOVolume::setVolume(const LLVolumeParams &params, const S32 detail, bool
 		// if it's a mesh
 		if ((volume_params.getSculptType() & LL_SCULPT_TYPE_MASK) == LL_SCULPT_TYPE_MESH)
 		{ //meshes might not have all LODs, get the force detail to best existing LOD
+
 			LLUUID mesh_id = params.getSculptID();
 
 			//profile and path params don't matter for meshes
-			volume_params = LLVolumeParams();
 			volume_params.setType(LL_PCODE_PROFILE_SQUARE, LL_PCODE_PATH_LINE);
-			volume_params.setSculptID(mesh_id, LL_SCULPT_TYPE_MESH);
 
-			lod = gMeshRepo.getActualMeshLOD(mesh_id, lod);
+			lod = gMeshRepo.getActualMeshLOD(volume_params, lod);
 		}
 	}
 
@@ -963,7 +962,7 @@ BOOL LLVOVolume::setVolume(const LLVolumeParams &params, const S32 detail, bool
 				{ 
 					//load request not yet issued, request pipeline load this mesh
 					LLUUID asset_id = volume_params.getSculptID();
-					S32 available_lod = gMeshRepo.loadMesh(this, asset_id, lod);
+					S32 available_lod = gMeshRepo.loadMesh(this, volume_params, lod);
 					if (available_lod != lod)
 					{
 						LLPrimitive::setVolume(volume_params, available_lod);