73 lines
2.7 KiB
C++
73 lines
2.7 KiB
C++
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include "FbxBlendShapesAccess.hpp"
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FbxBlendShapesAccess::TargetShape::TargetShape(const FbxShape* shape, FbxDouble fullWeight)
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: shape(shape),
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fullWeight(fullWeight),
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count(shape->GetControlPointsCount()),
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positions(shape->GetControlPoints()),
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normals(FbxLayerElementAccess<FbxVector4>(
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shape->GetElementNormal(),
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shape->GetElementNormalCount())),
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tangents(FbxLayerElementAccess<FbxVector4>(
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shape->GetElementTangent(),
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shape->GetElementTangentCount())) {}
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FbxAnimCurve* FbxBlendShapesAccess::BlendChannel::ExtractAnimation(unsigned int animIx) const {
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FbxAnimStack* stack = mesh->GetScene()->GetSrcObject<FbxAnimStack>(animIx);
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FbxAnimLayer* layer = stack->GetMember<FbxAnimLayer>(0);
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return mesh->GetShapeChannel(blendShapeIx, channelIx, layer, true);
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}
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FbxBlendShapesAccess::BlendChannel::BlendChannel(
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FbxMesh* mesh,
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const unsigned int blendShapeIx,
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const unsigned int channelIx,
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const FbxDouble deformPercent,
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const std::vector<FbxBlendShapesAccess::TargetShape>& targetShapes,
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std::string name)
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: mesh(mesh),
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blendShapeIx(blendShapeIx),
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channelIx(channelIx),
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deformPercent(deformPercent),
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targetShapes(targetShapes),
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name(name) {}
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std::vector<FbxBlendShapesAccess::BlendChannel> FbxBlendShapesAccess::extractChannels(
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FbxMesh* mesh) const {
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std::vector<BlendChannel> channels;
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for (int shapeIx = 0; shapeIx < mesh->GetDeformerCount(FbxDeformer::eBlendShape); shapeIx++) {
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auto* fbxBlendShape =
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static_cast<FbxBlendShape*>(mesh->GetDeformer(shapeIx, FbxDeformer::eBlendShape));
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for (int channelIx = 0; channelIx < fbxBlendShape->GetBlendShapeChannelCount(); ++channelIx) {
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FbxBlendShapeChannel* fbxChannel = fbxBlendShape->GetBlendShapeChannel(channelIx);
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if (fbxChannel->GetTargetShapeCount() > 0) {
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std::vector<TargetShape> targetShapes;
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const double* fullWeights = fbxChannel->GetTargetShapeFullWeights();
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std::string name = std::string(fbxChannel->GetName());
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if (verboseOutput) {
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fmt::printf("\rblendshape channel: %s\n", name);
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}
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for (int targetIx = 0; targetIx < fbxChannel->GetTargetShapeCount(); targetIx++) {
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FbxShape* fbxShape = fbxChannel->GetTargetShape(targetIx);
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targetShapes.emplace_back(fbxShape, fullWeights[targetIx]);
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}
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channels.emplace_back(
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mesh, shapeIx, channelIx, fbxChannel->DeformPercent * 0.01, targetShapes, name);
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}
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}
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}
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return channels;
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}
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