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closes https://github.com/assimp/assimp/issues/842: experimental suppor for ascii stl pointcloud export.

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This commit is contained in:
Kim Kulling
2018-05-01 09:06:22 +02:00
parent 410e9d4b3f
commit 9f835ea843
6 changed files with 52 additions and 18 deletions
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40
code/STLExporter.cpp
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@@ -54,14 +54,17 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <assimp/ByteSwapper.h>
using namespace Assimp;
namespace Assimp {
// ------------------------------------------------------------------------------------------------
// Worker function for exporting a scene to Stereolithograpy. Prototyped and registered in Exporter.cpp
void ExportSceneSTL(const char* pFile,IOSystem* pIOSystem, const aiScene* pScene, const ExportProperties* /*pProperties*/)
void ExportSceneSTL(const char* pFile,IOSystem* pIOSystem, const aiScene* pScene, const ExportProperties* pProperties )
{
bool exportPointClouds = pProperties->GetPropertyBool(AI_CONFIG_EXPORT_POINT_CLOUDS);
// invoke the exporter
STLExporter exporter(pFile, pScene);
STLExporter exporter(pFile, pScene, exportPointClouds );
if (exporter.mOutput.fail()) {
throw DeadlyExportError("output data creation failed. Most likely the file became too large: " + std::string(pFile));
@@ -75,10 +78,12 @@ void ExportSceneSTL(const char* pFile,IOSystem* pIOSystem, const aiScene* pScene
outfile->Write( exporter.mOutput.str().c_str(), static_cast<size_t>(exporter.mOutput.tellp()),1);
}
void ExportSceneSTLBinary(const char* pFile,IOSystem* pIOSystem, const aiScene* pScene, const ExportProperties* /*pProperties*/)
void ExportSceneSTLBinary(const char* pFile,IOSystem* pIOSystem, const aiScene* pScene, const ExportProperties* pProperties )
{
bool exportPointClouds = pProperties->GetPropertyBool(AI_CONFIG_EXPORT_POINT_CLOUDS);
// invoke the exporter
STLExporter exporter(pFile, pScene, true);
STLExporter exporter(pFile, pScene, exportPointClouds, true);
if (exporter.mOutput.fail()) {
throw DeadlyExportError("output data creation failed. Most likely the file became too large: " + std::string(pFile));
@@ -97,7 +102,7 @@ void ExportSceneSTLBinary(const char* pFile,IOSystem* pIOSystem, const aiScene*
// ------------------------------------------------------------------------------------------------
STLExporter :: STLExporter(const char* _filename, const aiScene* pScene, bool binary)
STLExporter::STLExporter(const char* _filename, const aiScene* pScene, bool exportPointClouds, bool binary)
: filename(_filename)
, endl("\n")
{
@@ -118,12 +123,37 @@ STLExporter :: STLExporter(const char* _filename, const aiScene* pScene, bool bi
}
AI_SWAP4(meshnum);
mOutput.write((char *)&meshnum, 4);
if (exportPointClouds) {
}
for(unsigned int i = 0; i < pScene->mNumMeshes; ++i) {
WriteMeshBinary(pScene->mMeshes[i]);
}
} else {
const std::string& name = "AssimpScene";
// Exporting only point clouds
if (exportPointClouds) {
mOutput << "solid " << name << endl;
aiVector3D nor;
mOutput << " facet normal " << nor.x << " " << nor.y << " " << nor.z << endl;
for (unsigned int i = 0; i < pScene->mNumMeshes; ++i) {
aiMesh *mesh = pScene->mMeshes[i];
if (mesh->mNormals) {
for (unsigned int a = 0; a < mesh->mNumVertices; ++a) {
const aiVector3D& v = mesh->mVertices[a];
mOutput << " vertex " << v.x << " " << v.y << " " << v.z << endl;
mOutput << " vertex " << v.x << " " << v.y << " " << v.z << endl;
mOutput << " vertex " << v.x << " " << v.y << " " << v.z << endl;
}
}
}
mOutput << "endsolid " << name << endl;
return;
}
mOutput << "solid " << name << endl;
for(unsigned int i = 0; i < pScene->mNumMeshes; ++i) {
WriteMesh(pScene->mMeshes[i]);