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Refactoring: Reuse code from GeometryUtils

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This commit is contained in:
Kim Kulling
2023-05-04 00:00:52 +02:00
parent 5d841ec9a5
commit d58201a579
20 changed files with 526 additions and 535 deletions
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80
code/PostProcessing/FindDegenerates.cpp
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@@ -41,11 +41,11 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
/** @file FindDegenerates.cpp
* @brief Implementation of the FindDegenerates post-process step.
*/
*/
#include "ProcessHelper.h"
#include "FindDegenerates.h"
#include "Geometry/GeometryUtils.h"
#include "ProcessHelper.h"
#include <assimp/Exceptional.h>
@@ -54,35 +54,35 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
using namespace Assimp;
// Correct node indices to meshes and remove references to deleted mesh
static void updateSceneGraph(aiNode* pNode, const std::unordered_map<unsigned int, unsigned int>& meshMap);
static void updateSceneGraph(aiNode *pNode, const std::unordered_map<unsigned int, unsigned int> &meshMap);
// ------------------------------------------------------------------------------------------------
// Constructor to be privately used by Importer
FindDegeneratesProcess::FindDegeneratesProcess() :
mConfigRemoveDegenerates( false ),
mConfigCheckAreaOfTriangle( false ){
mConfigRemoveDegenerates(false),
mConfigCheckAreaOfTriangle(false) {
// empty
}
// ------------------------------------------------------------------------------------------------
// Returns whether the processing step is present in the given flag field.
bool FindDegeneratesProcess::IsActive( unsigned int pFlags) const {
bool FindDegeneratesProcess::IsActive(unsigned int pFlags) const {
return 0 != (pFlags & aiProcess_FindDegenerates);
}
// ------------------------------------------------------------------------------------------------
// Setup import configuration
void FindDegeneratesProcess::SetupProperties(const Importer* pImp) {
void FindDegeneratesProcess::SetupProperties(const Importer *pImp) {
// Get the current value of AI_CONFIG_PP_FD_REMOVE
mConfigRemoveDegenerates = (0 != pImp->GetPropertyInteger(AI_CONFIG_PP_FD_REMOVE,0));
mConfigCheckAreaOfTriangle = ( 0 != pImp->GetPropertyInteger(AI_CONFIG_PP_FD_CHECKAREA) );
mConfigRemoveDegenerates = (0 != pImp->GetPropertyInteger(AI_CONFIG_PP_FD_REMOVE, 0));
mConfigCheckAreaOfTriangle = (0 != pImp->GetPropertyInteger(AI_CONFIG_PP_FD_CHECKAREA));
}
// ------------------------------------------------------------------------------------------------
// Executes the post processing step on the given imported data.
void FindDegeneratesProcess::Execute( aiScene* pScene) {
void FindDegeneratesProcess::Execute(aiScene *pScene) {
ASSIMP_LOG_DEBUG("FindDegeneratesProcess begin");
if ( nullptr == pScene) {
if (nullptr == pScene) {
return;
}
@@ -112,7 +112,7 @@ void FindDegeneratesProcess::Execute( aiScene* pScene) {
ASSIMP_LOG_DEBUG("FindDegeneratesProcess finished");
}
static void updateSceneGraph(aiNode* pNode, const std::unordered_map<unsigned int, unsigned int>& meshMap) {
static void updateSceneGraph(aiNode *pNode, const std::unordered_map<unsigned int, unsigned int> &meshMap) {
unsigned int targetIndex = 0;
for (unsigned i = 0; i < pNode->mNumMeshes; ++i) {
const unsigned int sourceMeshIndex = pNode->mMeshes[i];
@@ -123,7 +123,7 @@ static void updateSceneGraph(aiNode* pNode, const std::unordered_map<unsigned in
}
}
pNode->mNumMeshes = targetIndex;
//recurse to all children
// recurse to all children
for (unsigned i = 0; i < pNode->mNumChildren; ++i) {
updateSceneGraph(pNode->mChildren[i], meshMap);
}
@@ -131,17 +131,17 @@ static void updateSceneGraph(aiNode* pNode, const std::unordered_map<unsigned in
// ------------------------------------------------------------------------------------------------
// Executes the post processing step on the given imported mesh
bool FindDegeneratesProcess::ExecuteOnMesh( aiMesh* mesh) {
bool FindDegeneratesProcess::ExecuteOnMesh(aiMesh *mesh) {
mesh->mPrimitiveTypes = 0;
std::vector<bool> remove_me;
if (mConfigRemoveDegenerates) {
remove_me.resize( mesh->mNumFaces, false );
remove_me.resize(mesh->mNumFaces, false);
}
unsigned int deg = 0, limit;
for ( unsigned int a = 0; a < mesh->mNumFaces; ++a ) {
aiFace& face = mesh->mFaces[a];
for (unsigned int a = 0; a < mesh->mNumFaces; ++a) {
aiFace &face = mesh->mFaces[a];
bool first = true;
// check whether the face contains degenerated entries
@@ -151,43 +151,43 @@ bool FindDegeneratesProcess::ExecuteOnMesh( aiMesh* mesh) {
// double points may not come directly after another.
limit = face.mNumIndices;
if (face.mNumIndices > 4) {
limit = std::min( limit, i+2 );
limit = std::min(limit, i + 2);
}
for (unsigned int t = i+1; t < limit; ++t) {
if (mesh->mVertices[face.mIndices[ i ] ] == mesh->mVertices[ face.mIndices[ t ] ]) {
for (unsigned int t = i + 1; t < limit; ++t) {
if (mesh->mVertices[face.mIndices[i]] == mesh->mVertices[face.mIndices[t]]) {
// we have found a matching vertex position
// remove the corresponding index from the array
--face.mNumIndices;
--limit;
for (unsigned int m = t; m < face.mNumIndices; ++m) {
face.mIndices[ m ] = face.mIndices[ m+1 ];
face.mIndices[m] = face.mIndices[m + 1];
}
--t;
// NOTE: we set the removed vertex index to an unique value
// to make sure the developer gets notified when his
// application attempts to access this data.
face.mIndices[ face.mNumIndices ] = 0xdeadbeef;
face.mIndices[face.mNumIndices] = 0xdeadbeef;
if(first) {
if (first) {
++deg;
first = false;
}
if ( mConfigRemoveDegenerates ) {
remove_me[ a ] = true;
if (mConfigRemoveDegenerates) {
remove_me[a] = true;
goto evil_jump_outside; // hrhrhrh ... yeah, this rocks baby!
}
}
}
if ( mConfigCheckAreaOfTriangle ) {
if ( face.mNumIndices == 3 ) {
ai_real area = GeometryUtils::calculateAreaOfTriangle( face, mesh );
if (mConfigCheckAreaOfTriangle) {
if (face.mNumIndices == 3) {
ai_real area = GeometryUtils::calculateAreaOfTriangle(face, mesh);
if (area < ai_epsilon) {
if ( mConfigRemoveDegenerates ) {
remove_me[ a ] = true;
if (mConfigRemoveDegenerates) {
remove_me[a] = true;
++deg;
goto evil_jump_outside;
}
@@ -199,8 +199,7 @@ bool FindDegeneratesProcess::ExecuteOnMesh( aiMesh* mesh) {
}
// We need to update the primitive flags array of the mesh.
switch (face.mNumIndices)
{
switch (face.mNumIndices) {
case 1u:
mesh->mPrimitiveTypes |= aiPrimitiveType_POINT;
break;
@@ -214,22 +213,21 @@ bool FindDegeneratesProcess::ExecuteOnMesh( aiMesh* mesh) {
mesh->mPrimitiveTypes |= aiPrimitiveType_POLYGON;
break;
};
evil_jump_outside:
evil_jump_outside:
continue;
}
// If AI_CONFIG_PP_FD_REMOVE is true, remove degenerated faces from the import
if (mConfigRemoveDegenerates && deg) {
unsigned int n = 0;
for (unsigned int a = 0; a < mesh->mNumFaces; ++a)
{
aiFace& face_src = mesh->mFaces[a];
for (unsigned int a = 0; a < mesh->mNumFaces; ++a) {
aiFace &face_src = mesh->mFaces[a];
if (!remove_me[a]) {
aiFace& face_dest = mesh->mFaces[n++];
aiFace &face_dest = mesh->mFaces[n++];
// Do a manual copy, keep the index array
face_dest.mNumIndices = face_src.mNumIndices;
face_dest.mIndices = face_src.mIndices;
face_dest.mIndices = face_src.mIndices;
if (&face_src != &face_dest) {
// clear source
@@ -246,15 +244,15 @@ evil_jump_outside:
// Just leave the rest of the array unreferenced, we don't care for now
mesh->mNumFaces = n;
if (!mesh->mNumFaces) {
//The whole mesh consists of degenerated faces
//signal upward, that this mesh should be deleted.
// The whole mesh consists of degenerated faces
// signal upward, that this mesh should be deleted.
ASSIMP_LOG_VERBOSE_DEBUG("FindDegeneratesProcess removed a mesh full of degenerated primitives");
return true;
}
}
if (deg && !DefaultLogger::isNullLogger()) {
ASSIMP_LOG_WARN( "Found ", deg, " degenerated primitives");
ASSIMP_LOG_WARN("Found ", deg, " degenerated primitives");
}
return false;
}