mirror of
https://git.mirrors.martin98.com/https://github.com/google/draco
synced 2025-07-28 02:02:03 +08:00
73bb3c8530
- Improved compression for triangular meshes (~10%) - Added WebAssembly decoder - Code cleanup + robustness fixes
76 lines
2.7 KiB
C++
76 lines
2.7 KiB
C++
// Copyright 2016 The Draco Authors.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
//
|
|
#include "compression/mesh/mesh_edgebreaker_encoder.h"
|
|
|
|
#include "compression/mesh/mesh_edgebreaker_encoder_impl.h"
|
|
#include "compression/mesh/mesh_edgebreaker_traversal_predictive_encoder.h"
|
|
#include "compression/mesh/mesh_edgebreaker_traversal_valence_encoder.h"
|
|
|
|
namespace draco {
|
|
|
|
MeshEdgeBreakerEncoder::MeshEdgeBreakerEncoder() {}
|
|
|
|
bool MeshEdgeBreakerEncoder::InitializeEncoder() {
|
|
const bool is_standard_edgebreaker_avaialable =
|
|
options()->IsFeatureSupported(features::kEdgebreaker);
|
|
const bool is_predictive_edgebreaker_avaialable =
|
|
options()->IsFeatureSupported(features::kPredictiveEdgebreaker);
|
|
|
|
impl_ = nullptr;
|
|
// For tiny meshes it's usually better to use the basic edgebreaker as the
|
|
// overhead of the predictive one may turn out to be too big.
|
|
// TODO(ostava): For now we have a set limit for forcing the basic edgebreaker
|
|
// based on the number of faces, but a more complex heuristic may be used if
|
|
// needed.
|
|
const bool is_tiny_mesh = mesh()->num_faces() < 1000;
|
|
|
|
if (is_standard_edgebreaker_avaialable &&
|
|
(options()->GetSpeed() >= 5 || !is_predictive_edgebreaker_avaialable ||
|
|
is_tiny_mesh)) {
|
|
buffer()->Encode(static_cast<uint8_t>(0));
|
|
impl_ = std::unique_ptr<MeshEdgeBreakerEncoderImplInterface>(
|
|
new MeshEdgeBreakerEncoderImpl<MeshEdgeBreakerTraversalEncoder>());
|
|
} else if (is_predictive_edgebreaker_avaialable) {
|
|
buffer()->Encode(static_cast<uint8_t>(2));
|
|
impl_ = std::unique_ptr<MeshEdgeBreakerEncoderImplInterface>(
|
|
new MeshEdgeBreakerEncoderImpl<
|
|
MeshEdgeBreakerTraversalValenceEncoder>());
|
|
}
|
|
if (!impl_)
|
|
return false;
|
|
if (!impl_->Init(this))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
bool MeshEdgeBreakerEncoder::GenerateAttributesEncoder(int32_t att_id) {
|
|
if (!impl_->GenerateAttributesEncoder(att_id))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
bool MeshEdgeBreakerEncoder::EncodeAttributesEncoderIdentifier(
|
|
int32_t att_encoder_id) {
|
|
if (!impl_->EncodeAttributesEncoderIdentifier(att_encoder_id))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
bool MeshEdgeBreakerEncoder::EncodeConnectivity() {
|
|
return impl_->EncodeConnectivity();
|
|
}
|
|
|
|
} // namespace draco
|