DXF: defer inlining of blocks until actually required (patch by Alan …

…Thomas, fixes #7106, #251)

git-svn-id: https://svn.osgeo.org/gdal/trunk@40548 f0d54148-0727-0410-94bb-9a71ac55c965

autotest/ogr/ogr_dxf.py

@@ -724,6 +724,16 @@ def ogr_dxf_16():
         gdaltest.post_reason( 'did not get expected layer name.' )
         return 'fail'
 
+    # STAR geometry
+    feat = dxf_layer.GetNextFeature()
+
+    if feat.GetField('Block') != 'STAR':
+        gdaltest.post_reason( 'Did not get expected block name.' )
+        return 'fail'
+
+    if ogrtest.check_feature_geometry( feat, 'MULTILINESTRING ((-0.028147497671066 1.041457413829428 0,0.619244948763444 -1.069604911500494 0),(0.619244948763444 -1.069604911500494 0,-0.957014920816232 0.478507460408116 0),(-0.957014920816232 0.478507460408116 0,1.041457413829428 0.365917469723853 0),(1.041457413829428 0.365917469723853 0,-0.478507460408116 -1.041457413829428 0),(-0.478507460408116 -1.041457413829428 0,-0.056294995342131 1.013309916158363 0))' ):
+        return 'fail'
+
     # First MTEXT
     feat = dxf_layer.GetNextFeature()
     if feat.GetField( 'Text' ) != gdaltest.sample_text:
@@ -751,16 +761,6 @@ def ogr_dxf_16():
     if ogrtest.check_feature_geometry( feat, 'POINT (0.879677852348995 -0.263903355704699 0)' ):
         return 'fail'
 
-    # STAR geometry
-    feat = dxf_layer.GetNextFeature()
-
-    if feat.GetField('BlockName') != 'STAR':
-        gdaltest.post_reason( 'Did not get expected block name.' )
-        return 'fail'
-
-    if ogrtest.check_feature_geometry( feat, 'MULTILINESTRING ((-0.028147497671066 1.041457413829428 0,0.619244948763444 -1.069604911500494 0),(0.619244948763444 -1.069604911500494 0,-0.957014920816232 0.478507460408116 0),(-0.957014920816232 0.478507460408116 0,1.041457413829428 0.365917469723853 0),(1.041457413829428 0.365917469723853 0,-0.478507460408116 -1.041457413829428 0),(-0.478507460408116 -1.041457413829428 0,-0.056294995342131 1.013309916158363 0))' ):
-        return 'fail'
-
     feat = None
 
     # cleanup
@@ -783,21 +783,21 @@ def ogr_dxf_17():
     dst_feat = ogr.Feature( feature_def = blyr.GetLayerDefn() )
     dst_feat.SetGeometryDirectly( ogr.CreateGeometryFromWkt(
         'GEOMETRYCOLLECTION( LINESTRING(0 0,1 1),LINESTRING(1 0,0 1))' ) )
-    dst_feat.SetField( 'BlockName', 'XMark' )
+    dst_feat.SetField( 'Block', 'XMark' )
     blyr.CreateFeature( dst_feat )
 
     # Block with 2 polygons
     dst_feat = ogr.Feature( feature_def = blyr.GetLayerDefn() )
     dst_feat.SetGeometryDirectly( ogr.CreateGeometryFromWkt(
         'GEOMETRYCOLLECTION( POLYGON((10 10,10 20,20 20,20 10,10 10)),POLYGON((10 -10,10 -20,20 -20,20 -10,10 -10)))' ) )
-    dst_feat.SetField( 'BlockName', 'Block2' )
+    dst_feat.SetField( 'Block', 'Block2' )
     blyr.CreateFeature( dst_feat )
 
     # Block with point and line
     dst_feat = ogr.Feature( feature_def = blyr.GetLayerDefn() )
     dst_feat.SetGeometryDirectly( ogr.CreateGeometryFromWkt(
         'GEOMETRYCOLLECTION( POINT(1 2),LINESTRING(0 0,1 1))' ) )
-    dst_feat.SetField( 'BlockName', 'Block3' )
+    dst_feat.SetField( 'Block', 'Block3' )
     blyr.CreateFeature( dst_feat )
 
     # Write a block reference feature.
@@ -2716,6 +2716,88 @@ def ogr_dxf_41():
 
     return 'success'
 
+###############################################################################
+# Test insertion of blocks within blocks (#7106)
+
+def ogr_dxf_42():
+
+    # Inlining, merging
+    ds = ogr.Open('data/block-insert-order.dxf')
+    lyr = ds.GetLayer(0)
+    if lyr.GetFeatureCount() != 2:
+        gdaltest.post_reason( 'Defaults: Expected 2 features, found %d' % lyr.GetFeatureCount() )
+        return 'fail'
+
+    # No inlining, merging
+    gdal.SetConfigOption('DXF_INLINE_BLOCKS', 'FALSE')
+    ds = ogr.Open('data/block-insert-order.dxf')
+    gdal.SetConfigOption('DXF_INLINE_BLOCKS', None)
+
+    lyr = ds.GetLayerByName('entities')
+    if lyr.GetFeatureCount() != 2:
+        gdaltest.post_reason( 'No inlining: Expected 2 features on entities, found %d' % lyr.GetFeatureCount() )
+        return 'fail'
+
+    f = lyr.GetNextFeature()
+    if ogrtest.check_feature_geometry(f, 'POINT Z (0 0 0)') != 0:
+        gdaltest.post_reason( 'Wrong geometry for first insertion point' )
+        f.DumpReadable()
+        return 'fail'
+
+    f = lyr.GetNextFeature()
+    if ogrtest.check_feature_geometry(f, 'POINT Z (-1 -2 -3)') != 0:
+        gdaltest.post_reason( 'Wrong geometry for second insertion point' )
+        f.DumpReadable()
+        return 'fail'
+
+    lyr = ds.GetLayerByName('blocks')
+    if lyr.GetFeatureCount() != 6:
+        gdaltest.post_reason( 'No inlining: Expected 6 feature on blocks, found %d' % lyr.GetFeatureCount() )
+        return 'fail'
+
+    f = lyr.GetFeature(3)
+    if ogrtest.check_feature_geometry(f, 'POINT Z (5 5 0)') != 0:
+        gdaltest.post_reason( 'Wrong geometry for second insertion of BLOCK4 on BLOCK3' )
+        f.DumpReadable()
+        return 'fail'
+
+    f = lyr.GetFeature(4)
+    if ogrtest.check_feature_geometry(f, 'POINT Z (-5.48795472456028 1.69774937525433 4.12310562561766)') != 0:
+        gdaltest.post_reason( 'Wrong geometry for third insertion of BLOCK4 on BLOCK3' )
+        f.DumpReadable()
+        return 'fail'
+
+    if f.GetField('BlockName') != 'BLOCK4':
+        gdaltest.post_reason( 'Wrong BlockName' )
+        return 'fail'
+    if f.GetField('BlockScale') != [0.4,1.0,1.5]:
+        gdaltest.post_reason( 'Wrong BlockScale' )
+        return 'fail'
+    if f.GetField('BlockAngle') != 40:
+        gdaltest.post_reason( 'Wrong BlockAngle' )
+        return 'fail'
+    if f.GetField('BlockOCSNormal') != [0.6,0.565685424949238,0.565685424949238]:
+        gdaltest.post_reason( 'Wrong BlockOCSNormal' )
+        return 'fail'
+    if f.GetField('BlockOCSCoords') != [5,5,0]:
+        gdaltest.post_reason( 'Wrong BlockOCSCoords' )
+        return 'fail'
+    if f.GetField('Block') != 'BLOCK3':
+        gdaltest.post_reason( 'Wrong Block' )
+        return 'fail'
+
+    # Inlining, no merging
+    gdal.SetConfigOption('DXF_MERGE_BLOCK_GEOMETRIES', 'FALSE')
+    ds = ogr.Open('data/block-insert-order.dxf')
+    gdal.SetConfigOption('DXF_MERGE_BLOCK_GEOMETRIES', None)
+
+    lyr = ds.GetLayer(0)
+    if lyr.GetFeatureCount() != 4:
+        gdaltest.post_reason( 'Merging: Expected 4 features, found %d' % lyr.GetFeatureCount() )
+        return 'fail'
+
+    return 'success'
+
 ###############################################################################
 # cleanup
 
@@ -2770,6 +2852,7 @@ def ogr_dxf_cleanup():
     ogr_dxf_39,
     ogr_dxf_40,
     ogr_dxf_41,
+    ogr_dxf_42,
     ogr_dxf_cleanup ]
 
 if __name__ == '__main__':

gdal/ogr/ogr_feature.h

@@ -297,6 +297,8 @@ class CPL_DLL OGRFeature
     char                *m_pszTmpFieldValue;
 //! @endcond
 
+    bool                CopySelfTo( OGRFeature *poNew );
+
   public:
     explicit            OGRFeature( OGRFeatureDefn * );
     virtual            ~OGRFeature();

gdal/ogr/ogrfeature.cpp

@@ -880,12 +880,61 @@ OGRFeature *OGRFeature::Clone()
     if( poNew == NULL )
         return NULL;
 
+    if( !CopySelfTo( poNew ) )
+    {
+        delete poNew;
+        return NULL;
+    }
+
+    return poNew;
+}
+
+/************************************************************************/
+/*                            OGR_F_Clone()                             */
+/************************************************************************/
+
+/**
+ * \brief Duplicate feature.
+ *
+ * The newly created feature is owned by the caller, and will have it's own
+ * reference to the OGRFeatureDefn.
+ *
+ * This function is the same as the C++ method OGRFeature::Clone().
+ *
+ * @param hFeat handle to the feature to clone.
+ * @return an handle to the new feature, exactly matching this feature.
+ */
+
+OGRFeatureH OGR_F_Clone( OGRFeatureH hFeat )
+
+{
+    VALIDATE_POINTER1( hFeat, "OGR_F_Clone", NULL );
+
+    return reinterpret_cast<OGRFeatureH>(
+        reinterpret_cast<OGRFeature *>(hFeat)->Clone());
+}
+
+/************************************************************************/
+/*                             CopySelfTo()                             */
+/************************************************************************/
+
+/**
+* \brief Copies the innards of this OGRFeature into the supplied object.
+*
+* This is mainly intended to allow derived classes to implement their own
+* Clone functions.
+*
+* @param poNew The object into which to copy the data of this object.
+* @return True if successful, false if the copy failed.
+*/
+
+bool OGRFeature::CopySelfTo( OGRFeature* poNew )
+{
     for( int i = 0; i < poDefn->GetFieldCount(); i++ )
     {
         if( !poNew->SetFieldInternal( i, pauFields + i ) )
         {
-            delete poNew;
-            return NULL;
+            return false;
         }
     }
     if( poNew->papoGeometries )
@@ -897,8 +946,7 @@ OGRFeature *OGRFeature::Clone()
                 poNew->papoGeometries[i] = papoGeometries[i]->clone();
                 if( poNew->papoGeometries[i] == NULL )
                 {
-                    delete poNew;
-                    return NULL;
+                    return false;
                 }
             }
         }
@@ -909,8 +957,7 @@ OGRFeature *OGRFeature::Clone()
         poNew->m_pszStyleString = VSI_STRDUP_VERBOSE(m_pszStyleString);
         if( poNew->m_pszStyleString == NULL )
         {
-            delete poNew;
-            return NULL;
+            return false;
         }
     }
 
@@ -921,8 +968,7 @@ OGRFeature *OGRFeature::Clone()
         poNew->m_pszNativeData = VSI_STRDUP_VERBOSE(m_pszNativeData);
         if( poNew->m_pszNativeData == NULL )
         {
-            delete poNew;
-            return NULL;
+            return false;
         }
     }
 
@@ -931,37 +977,11 @@ OGRFeature *OGRFeature::Clone()
         poNew->m_pszNativeMediaType = VSI_STRDUP_VERBOSE(m_pszNativeMediaType);
         if( poNew->m_pszNativeMediaType == NULL )
         {
-            delete poNew;
-            return NULL;
+            return false;
         }
     }
 
-    return poNew;
-}
-
-/************************************************************************/
-/*                            OGR_F_Clone()                             */
-/************************************************************************/
-
-/**
- * \brief Duplicate feature.
- *
- * The newly created feature is owned by the caller, and will have it's own
- * reference to the OGRFeatureDefn.
- *
- * This function is the same as the C++ method OGRFeature::Clone().
- *
- * @param hFeat handle to the feature to clone.
- * @return an handle to the new feature, exactly matching this feature.
- */
-
-OGRFeatureH OGR_F_Clone( OGRFeatureH hFeat )
-
-{
-    VALIDATE_POINTER1( hFeat, "OGR_F_Clone", NULL );
-
-    return reinterpret_cast<OGRFeatureH>(
-        reinterpret_cast<OGRFeature *>(hFeat)->Clone());
+    return true;
 }
 
 /************************************************************************/

gdal/ogr/ogrsf_frmts/dxf/GNUmakefile

@@ -6,7 +6,7 @@ OBJ	=	ogrdxfdriver.o ogrdxfdatasource.o ogrdxflayer.o \
 		ogrdxfwriterds.o ogrdxfwriterlayer.o intronurbs.o \
 		ogrdxf_polyline_smooth.o ogrdxfblockslayer.o \
 		ogrdxfblockswriterlayer.o ogrdxf_hatch.o \
-		ogr_autocad_services.o
+		ogr_autocad_services.o ogrdxf_feature.o
 
 CPPFLAGS	:=	-I.. -I../..  $(CPPFLAGS)