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#3345 HoloLens: First cut textures, primitive widning and preparations for line primitives

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This commit is contained in:
sigurdp
2018-09-20 18:28:38 +02:00
parent 6896367551
commit 54cb35232a
1 changed files with 27 additions and 25 deletions
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52
ApplicationCode/Commands/HoloLensCommands/VdeFileExporter.cpp
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@@ -168,13 +168,17 @@ bool VdeFileExporter::extractMeshFromExportPart(const VdeExportPart& exportPart,
} }
if (primSet->primitiveType() != cvf::PT_TRIANGLES) // Support 2 or 3 vertices per primitive
const cvf::PrimitiveType primType = primSet->primitiveType();
if (primType != cvf::PT_TRIANGLES && primType != cvf::PT_LINES)
{ {
RiaLogging::debug(QString("Currently only triangle primitive sets are supported (saw primitive type: %1)").arg(primSet->primitiveType())); RiaLogging::debug(QString("Currently only triangle and line primitive sets are supported (saw primitive type: %1)").arg(primType));
return false; return false;
} }
mesh->verticesPerPrimitive = 3; const int vertsPerPrimitive = (primType == cvf::PT_TRIANGLES) ? 3 : 2;
mesh->verticesPerPrimitive = vertsPerPrimitive;
// Possibly transform the vertices // Possibly transform the vertices
if (cvfPart->transform()) if (cvfPart->transform())
@@ -195,39 +199,37 @@ bool VdeFileExporter::extractMeshFromExportPart(const VdeExportPart& exportPart,
mesh->vertexArr = vertexArr; mesh->vertexArr = vertexArr;
} }
// Fetch connectivities
// Using getFaceIndices() allows us to access strips and fans in the same way as triangles
// Note that HoloLens visualization wants triangles in clockwise order so we try and fix the winding
// This point might be moot if the HoloLens visualization always has to use two-sideded lighting to get good results
cvf::UIntArray faceConn; cvf::UIntArray faceConn;
const size_t faceCount = primSet->faceCount(); const size_t faceCount = primSet->faceCount();
for (size_t iface = 0; iface < faceCount; iface++) for (size_t iface = 0; iface < faceCount; iface++)
{ {
primSet->getFaceIndices(iface, &faceConn); primSet->getFaceIndices(iface, &faceConn);
//mesh->connArr.insert(mesh->connArr.end(), faceConn.begin(), faceConn.end());
// Reverse the winding if (vertsPerPrimitive == 3 && exportPart.winding() == VdeExportPart::COUNTERCLOCKWISE)
const size_t numConn = faceConn.size();
for (size_t i = 0; i < numConn; i++)
{ {
mesh->connArr.push_back(faceConn[numConn - i - 1]); // Reverse the winding
const size_t numConn = faceConn.size();
for (size_t i = 0; i < numConn; i++)
{
mesh->connArr.push_back(faceConn[numConn - i - 1]);
}
}
else
{
mesh->connArr.insert(mesh->connArr.end(), faceConn.begin(), faceConn.end());
} }
} }
// !!!! if (exportPart.textureImage() && geo->textureCoordArray())
// Experiment with texture fringes {
//if (geo->textureCoordArray()) mesh->texCoordArr = geo->textureCoordArray();
//{ mesh->texImage = exportPart.textureImage();
// cvf::Part* nonConstPart = const_cast<cvf::Part*>(cvfPart); }
// cvf::Effect* eff = nonConstPart->effect();
// cvf::RenderStateTextureBindings* rsTexBindings = dynamic_cast<cvf::RenderStateTextureBindings*>(eff->renderStateOfType(cvf::RenderState::TEXTURE_BINDINGS));
// if (rsTexBindings && rsTexBindings->bindingCount() > 0)
// {
// cvf::TextureImage* texImg = rsTexBindings->texture(0)->image();
// if (texImg)
// {
// mesh->texCoordArr = geo->textureCoordArray();
// mesh->texImage = texImg;
// }
// }
//}
QString srcObjType = "unknown"; QString srcObjType = "unknown";