Refactoring: Make GeoUtils reusable

code/CMakeLists.txt

@@ -218,6 +218,12 @@ SET( CApi_SRCS
 )
 SOURCE_GROUP(CApi FILES ${CApi_SRCS})
 
+SET(Geometry_SRCS
+  Geometry/GeometryUtils.h
+  Geometry/GeometryUtils.cpp
+)
+SOURCE_GROUP(Geometry FILES ${Geometry_SRCS})
+
 SET( STEPParser_SRCS
   AssetLib/STEPParser/STEPFileReader.h
   AssetLib/STEPParser/STEPFileReader.cpp
@@ -1129,6 +1135,7 @@ SET( assimp_src
   ${Core_SRCS}
   ${CApi_SRCS}
   ${Common_SRCS}
+  ${Geometry_SRCS}
   ${Logging_SRCS}
   ${Exporter_SRCS}
   ${PostProcessing_SRCS}

code/Common/Subdivision.cpp

@@ -53,6 +53,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <unordered_map>
 
 using namespace Assimp;
+
 void mydummy() {}
 
 #ifdef _MSC_VER

code/Geometry/GeometryUtils.cpp

@@ -0,0 +1,40 @@
+#include "GeometryUtils.h"
+
+#include <assimp/vector3.h>
+
+namespace Assimp {
+
+ai_real GeometryUtils::heron( ai_real a, ai_real b, ai_real c ) {
+    ai_real s = (a + b + c) / 2;
+    ai_real area = pow((s * ( s - a ) * ( s - b ) * ( s - c ) ), (ai_real)0.5 );
+    return area;
+}
+
+ai_real GeometryUtils::distance3D( const aiVector3D &vA, aiVector3D &vB ) {
+    const ai_real lx = ( vB.x - vA.x );
+    const ai_real ly = ( vB.y - vA.y );
+    const ai_real lz = ( vB.z - vA.z );
+    ai_real a = lx*lx + ly*ly + lz*lz;
+    ai_real d = pow( a, (ai_real)0.5 );
+
+    return d;
+}
+
+
+
+ai_real GeometryUtils::calculateAreaOfTriangle( const aiFace& face, aiMesh* mesh ) {
+    ai_real area = 0;
+
+    aiVector3D vA( mesh->mVertices[ face.mIndices[ 0 ] ] );
+    aiVector3D vB( mesh->mVertices[ face.mIndices[ 1 ] ] );
+    aiVector3D vC( mesh->mVertices[ face.mIndices[ 2 ] ] );
+
+    ai_real a( distance3D( vA, vB ) );
+    ai_real b( distance3D( vB, vC ) );
+    ai_real c( distance3D( vC, vA ) );
+    area = heron( a, b, c );
+
+    return area;
+}
+
+} // namespace Assimp

code/Geometry/GeometryUtils.h

@@ -0,0 +1,13 @@
+#include <assimp/types.h>
+#include <assimp/mesh.h>
+
+namespace Assimp {
+
+class GeometryUtils {
+public:
+    static ai_real heron( ai_real a, ai_real b, ai_real c );
+    static ai_real distance3D( const aiVector3D &vA, aiVector3D &vB );
+    static ai_real calculateAreaOfTriangle( const aiFace& face, aiMesh* mesh );
+};
+
+} // namespace Assimp

code/PostProcessing/FindDegenerates.cpp

@@ -45,6 +45,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "ProcessHelper.h"
 #include "FindDegenerates.h"
+#include "Geometry/GeometryUtils.h"
 
 #include <assimp/Exceptional.h>
 
@@ -63,10 +64,6 @@ FindDegeneratesProcess::FindDegeneratesProcess() :
     // empty
 }
 
-// ------------------------------------------------------------------------------------------------
-// Destructor, private as well
-FindDegeneratesProcess::~FindDegeneratesProcess() = default;
-
 // ------------------------------------------------------------------------------------------------
 // Returns whether the processing step is present in the given flag field.
 bool FindDegeneratesProcess::IsActive( unsigned int pFlags) const {
@@ -132,37 +129,6 @@ static void updateSceneGraph(aiNode* pNode, const std::unordered_map<unsigned in
     }
 }
 
-static ai_real heron( ai_real a, ai_real b, ai_real c ) {
-    ai_real s = (a + b + c) / 2;
-    ai_real area = pow((s * ( s - a ) * ( s - b ) * ( s - c ) ), (ai_real)0.5 );
-    return area;
-}
-
-static ai_real distance3D( const aiVector3D &vA, aiVector3D &vB ) {
-    const ai_real lx = ( vB.x - vA.x );
-    const ai_real ly = ( vB.y - vA.y );
-    const ai_real lz = ( vB.z - vA.z );
-    ai_real a = lx*lx + ly*ly + lz*lz;
-    ai_real d = pow( a, (ai_real)0.5 );
-
-    return d;
-}
-
-static ai_real calculateAreaOfTriangle( const aiFace& face, aiMesh* mesh ) {
-    ai_real area = 0;
-
-    aiVector3D vA( mesh->mVertices[ face.mIndices[ 0 ] ] );
-    aiVector3D vB( mesh->mVertices[ face.mIndices[ 1 ] ] );
-    aiVector3D vC( mesh->mVertices[ face.mIndices[ 2 ] ] );
-
-    ai_real a( distance3D( vA, vB ) );
-    ai_real b( distance3D( vB, vC ) );
-    ai_real c( distance3D( vC, vA ) );
-    area = heron( a, b, c );
-
-    return area;
-}
-
 // ------------------------------------------------------------------------------------------------
 // Executes the post processing step on the given imported mesh
 bool FindDegeneratesProcess::ExecuteOnMesh( aiMesh* mesh) {
@@ -218,7 +184,7 @@ bool FindDegeneratesProcess::ExecuteOnMesh( aiMesh* mesh) {
 
             if ( mConfigCheckAreaOfTriangle ) {
                 if ( face.mNumIndices == 3 ) {
-                    ai_real area = calculateAreaOfTriangle( face, mesh );
+                    ai_real area = GeometryUtils::calculateAreaOfTriangle( face, mesh );
                     if (area < ai_epsilon) {
                         if ( mConfigRemoveDegenerates ) {
                             remove_me[ a ] = true;

code/PostProcessing/FindDegenerates.h

@@ -59,7 +59,7 @@ namespace Assimp    {
 class ASSIMP_API FindDegeneratesProcess : public BaseProcess {
 public:
     FindDegeneratesProcess();
-    ~FindDegeneratesProcess();
+    ~FindDegeneratesProcess() = default;
 
     // -------------------------------------------------------------------
     // Check whether step is active
@@ -105,23 +105,19 @@ private:
     bool mConfigCheckAreaOfTriangle;
 };
 
-inline
-void FindDegeneratesProcess::EnableInstantRemoval(bool enabled) {
+inline void FindDegeneratesProcess::EnableInstantRemoval(bool enabled) {
     mConfigRemoveDegenerates = enabled;
 }
 
-inline
-bool FindDegeneratesProcess::IsInstantRemoval() const {
+inline bool FindDegeneratesProcess::IsInstantRemoval() const {
     return mConfigRemoveDegenerates;
 }
 
-inline
-void FindDegeneratesProcess::EnableAreaCheck( bool enabled ) {
+inline void FindDegeneratesProcess::EnableAreaCheck( bool enabled ) {
     mConfigCheckAreaOfTriangle = enabled;
 }
 
-inline
-bool FindDegeneratesProcess::isAreaCheckEnabled() const {
+inline bool FindDegeneratesProcess::isAreaCheckEnabled() const {
     return mConfigCheckAreaOfTriangle;
 }
 

code/PostProcessing/FindInstancesProcess.cpp

@@ -58,10 +58,6 @@ FindInstancesProcess::FindInstancesProcess()
 :   configSpeedFlag (false)
 {}
 
-// ------------------------------------------------------------------------------------------------
-// Destructor, private as well
-FindInstancesProcess::~FindInstancesProcess() = default;
-
 // ------------------------------------------------------------------------------------------------
 // Returns whether the processing step is present in the given flag field.
 bool FindInstancesProcess::IsActive( unsigned int pFlags) const

code/PostProcessing/FindInstancesProcess.h

@@ -107,14 +107,11 @@ inline bool CompareArrays(const aiColor4D* first, const aiColor4D* second,
 // ---------------------------------------------------------------------------
 /** @brief A post-processing steps to search for instanced meshes
 */
-class FindInstancesProcess : public BaseProcess
-{
+class FindInstancesProcess : public BaseProcess {
 public:
-
     FindInstancesProcess();
-    ~FindInstancesProcess();
+    ~FindInstancesProcess() = default;
 
-public:
     // -------------------------------------------------------------------
     // Check whether step is active in given flags combination
     bool IsActive( unsigned int pFlags) const;
@@ -128,10 +125,9 @@ public:
     void SetupProperties(const Importer* pImp);
 
 private:
-
     bool configSpeedFlag;
-
 }; // ! end class FindInstancesProcess
+
 }  // ! end namespace Assimp
 
 #endif // !! AI_FINDINSTANCES_H_INC

code/PostProcessing/FindInvalidDataProcess.cpp

@@ -60,10 +60,6 @@ FindInvalidDataProcess::FindInvalidDataProcess() :
     // nothing to do here
 }
 
-// ------------------------------------------------------------------------------------------------
-// Destructor, private as well
-FindInvalidDataProcess::~FindInvalidDataProcess() = default;
-
 // ------------------------------------------------------------------------------------------------
 // Returns whether the processing step is present in the given flag field.
 bool FindInvalidDataProcess::IsActive(unsigned int pFlags) const {

code/PostProcessing/FindInvalidDataProcess.h

@@ -65,7 +65,7 @@ namespace Assimp {
 class ASSIMP_API FindInvalidDataProcess : public BaseProcess {
 public:
     FindInvalidDataProcess();
-    ~FindInvalidDataProcess();
+    ~FindInvalidDataProcess() = default;
 
     // -------------------------------------------------------------------
     //

code/PostProcessing/FixNormalsStep.cpp

@@ -56,26 +56,15 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 using namespace Assimp;
 
-
-// ------------------------------------------------------------------------------------------------
-// Constructor to be privately used by Importer
-FixInfacingNormalsProcess::FixInfacingNormalsProcess() = default;
-
-// ------------------------------------------------------------------------------------------------
-// Destructor, private as well
-FixInfacingNormalsProcess::~FixInfacingNormalsProcess() = default;
-
 // ------------------------------------------------------------------------------------------------
 // Returns whether the processing step is present in the given flag field.
-bool FixInfacingNormalsProcess::IsActive( unsigned int pFlags) const
-{
+bool FixInfacingNormalsProcess::IsActive( unsigned int pFlags) const {
     return (pFlags & aiProcess_FixInfacingNormals) != 0;
 }
 
 // ------------------------------------------------------------------------------------------------
 // Executes the post processing step on the given imported data.
-void FixInfacingNormalsProcess::Execute( aiScene* pScene)
-{
+void FixInfacingNormalsProcess::Execute( aiScene* pScene) {
     ASSIMP_LOG_DEBUG("FixInfacingNormalsProcess begin");
 
     bool bHas( false );

code/PostProcessing/FixNormalsStep.h

@@ -49,8 +49,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 struct aiMesh;
 
-namespace Assimp
-{
+namespace Assimp {
 
 // ---------------------------------------------------------------------------
 /** The FixInfacingNormalsProcess tries to determine whether the normal
@@ -59,8 +58,8 @@ namespace Assimp
  */
 class FixInfacingNormalsProcess : public BaseProcess {
 public:
-    FixInfacingNormalsProcess();
-    ~FixInfacingNormalsProcess();
+    FixInfacingNormalsProcess() = default;
+    ~FixInfacingNormalsProcess() = default;
 
     // -------------------------------------------------------------------
     /** Returns whether the processing step is present in the given flag field.

code/PostProcessing/GenBoundingBoxesProcess.cpp

@@ -48,10 +48,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 namespace Assimp {
 
-GenBoundingBoxesProcess::GenBoundingBoxesProcess() = default;
-
-GenBoundingBoxesProcess::~GenBoundingBoxesProcess() = default;
-
 bool GenBoundingBoxesProcess::IsActive(unsigned int pFlags) const {
     return 0 != ( pFlags & aiProcess_GenBoundingBoxes );
 }

code/PostProcessing/GenBoundingBoxesProcess.h

@@ -19,7 +19,7 @@ conditions are met:
   copyright notice, this list of conditions and the
   following disclaimer in the documentation and/or other
   materials provided with the distribution.
-
+s
 * Neither the name of the assimp team, nor the names of its
   contributors may be used to endorse or promote products
   derived from this software without specific prior
@@ -54,15 +54,16 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 namespace Assimp {
 
-/** Post-processing process to find axis-aligned bounding volumes for amm meshes
- *  used in a scene
+/** 
+ * @brief Post-processing process to find axis-aligned bounding volumes for amm meshes
+ *        used in a scene.
  */
 class ASSIMP_API GenBoundingBoxesProcess : public BaseProcess {
 public:
     /// The class constructor.
-    GenBoundingBoxesProcess();
+    GenBoundingBoxesProcess() = default;
     /// The class destructor.
-    ~GenBoundingBoxesProcess();
+    ~GenBoundingBoxesProcess() = default;
     /// Will return true, if aiProcess_GenBoundingBoxes is defined.
     bool IsActive(unsigned int pFlags) const override;
     /// The execution callback.

code/PostProcessing/GenFaceNormalsProcess.cpp

@@ -54,14 +54,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 using namespace Assimp;
 
-// ------------------------------------------------------------------------------------------------
-// Constructor to be privately used by Importer
-GenFaceNormalsProcess::GenFaceNormalsProcess() = default;
-
-// ------------------------------------------------------------------------------------------------
-// Destructor, private as well
-GenFaceNormalsProcess::~GenFaceNormalsProcess() = default;
-
 // ------------------------------------------------------------------------------------------------
 // Returns whether the processing step is present in the given flag field.
 bool GenFaceNormalsProcess::IsActive(unsigned int pFlags) const {

code/PostProcessing/GenFaceNormalsProcess.h

@@ -47,20 +47,17 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "Common/BaseProcess.h"
 #include <assimp/mesh.h>
 
-namespace Assimp
-{
+namespace Assimp {
 
 // ---------------------------------------------------------------------------
-/** The GenFaceNormalsProcess computes face normals for all faces of all meshes
-*/
-class ASSIMP_API_WINONLY GenFaceNormalsProcess : public BaseProcess
-{
+/** 
+ * @brief The GenFaceNormalsProcess computes face normals for all faces of all meshes
+ */
+class ASSIMP_API_WINONLY GenFaceNormalsProcess : public BaseProcess {
 public:
+    GenFaceNormalsProcess() = default;
+    ~GenFaceNormalsProcess() = default;
 
-    GenFaceNormalsProcess();
-    ~GenFaceNormalsProcess();
-
-public:
     // -------------------------------------------------------------------
     /** Returns whether the processing step is present in the given flag field.
     * @param pFlags The processing flags the importer was called with. A bitwise

code/PostProcessing/GenVertexNormalsProcess.cpp

@@ -60,10 +60,6 @@ GenVertexNormalsProcess::GenVertexNormalsProcess() :
     // empty
 }
 
-// ------------------------------------------------------------------------------------------------
-// Destructor, private as well
-GenVertexNormalsProcess::~GenVertexNormalsProcess() = default;
-
 // ------------------------------------------------------------------------------------------------
 // Returns whether the processing step is present in the given flag field.
 bool GenVertexNormalsProcess::IsActive(unsigned int pFlags) const {
@@ -109,11 +105,11 @@ void GenVertexNormalsProcess::Execute(aiScene *pScene) {
 // Executes the post processing step on the given imported data.
 bool GenVertexNormalsProcess::GenMeshVertexNormals(aiMesh *pMesh, unsigned int meshIndex) {
     if (nullptr != pMesh->mNormals) {
-        if (force_)
-            delete[] pMesh->mNormals;
-        else
+        if (!force_) {
             return false;
         }
+        delete[] pMesh->mNormals;
+    }
 
     // If the mesh consists of lines and/or points but not of
     // triangles or higher-order polygons the normal vectors
@@ -144,8 +140,9 @@ bool GenVertexNormalsProcess::GenMeshVertexNormals(aiMesh *pMesh, unsigned int m
         const aiVector3D *pV3 = &pMesh->mVertices[face.mIndices[face.mNumIndices - 1]];
         // Boolean XOR - if either but not both of these flags is set, then the winding order has
         // changed and the cross product to calculate the normal needs to be reversed
-        if (flippedWindingOrder_ != leftHanded_)
+        if (flippedWindingOrder_ != leftHanded_) {
             std::swap(pV2, pV3);
+        }
         const aiVector3D vNor = ((*pV2 - *pV1) ^ (*pV3 - *pV1)).NormalizeSafe();
 
         for (unsigned int i = 0; i < face.mNumIndices; ++i) {

code/PostProcessing/GenVertexNormalsProcess.h

@@ -61,7 +61,7 @@ namespace Assimp {
 class ASSIMP_API GenVertexNormalsProcess : public BaseProcess {
 public:
     GenVertexNormalsProcess();
-    ~GenVertexNormalsProcess();
+    ~GenVertexNormalsProcess() = default;
 
     // -------------------------------------------------------------------
     /** Returns whether the processing step is present in the given flag.