pal: created StraightLabelPosition derived from LabelPosition.

Return LabelPosition array instead of Label array. git-svn-id: http://svn.osgeo.org/qgis/branches/symbology-ng-branch@11126 c8812cc2-4d05-0410-92ff-de0c093fc19c
qgis · Jul 21, 2009 · 4786e5467e35caa9a42e1b5508301044b806017d · 4786e54
1 parent dc046b5
commit 4786e5467e35caa9a42e1b5508301044b806017d
diff --git a/src/core/pal/costcalculator.cpp b/src/core/pal/costcalculator.cpp
@@ -60,7 +60,7 @@ namespace pal
 
   ////////
 
-  void CostCalculator::setPolygonCandidatesCost( int nblp, LabelPosition **lPos, int max_p, RTree<PointSet*, double, 2, double> *obstacles, double bbx[4], double bby[4] )
+  void CostCalculator::setPolygonCandidatesCost( int nblp, StraightLabelPosition **lPos, int max_p, RTree<PointSet*, double, 2, double> *obstacles, double bbx[4], double bby[4] )
   {
     int i;
 
@@ -118,7 +118,7 @@ namespace pal
   }
 
 
-  void CostCalculator::setCandidateCostFromPolygon( LabelPosition* lp, RTree <PointSet*, double, 2, double> *obstacles, double bbx[4], double bby[4] )
+  void CostCalculator::setCandidateCostFromPolygon( StraightLabelPosition* lp, RTree <PointSet*, double, 2, double> *obstacles, double bbx[4], double bby[4] )
   {
 
     double amin[2];
@@ -188,7 +188,7 @@ namespace pal
       {
         int arrangement = feat->feature->getLayer()->getArrangement();
         if ( arrangement == P_FREE || arrangement == P_HORIZ )
-          setPolygonCandidatesCost( stop, feat->lPos, max_p, obstacles, bbx, bby );
+          setPolygonCandidatesCost( stop, (StraightLabelPosition**) feat->lPos, max_p, obstacles, bbx, bby );
       }
 
       return max_p;
@@ -198,7 +198,7 @@ namespace pal
 
   //////////
 
-  PolygonCostCalculator::PolygonCostCalculator( LabelPosition *lp ) : lp( lp )
+  PolygonCostCalculator::PolygonCostCalculator( StraightLabelPosition *lp ) : lp( lp )
   {
     int i;
     double hyp = max( lp->feature->xmax - lp->feature->xmin, lp->feature->ymax - lp->feature->ymin );

diff --git a/src/core/pal/costcalculator.h b/src/core/pal/costcalculator.h
@@ -6,17 +6,18 @@
 namespace pal
 {
   class Feats;
+  class StraightLabelPosition;
 
   class CostCalculator
   {
   public:
     /** increase candidate's cost according to its collision with passed feature */
     static void addObstacleCostPenalty(LabelPosition* lp, PointSet* feat);
 
-    static void setPolygonCandidatesCost( int nblp, LabelPosition **lPos, int max_p, RTree<PointSet*, double, 2, double> *obstacles, double bbx[4], double bby[4] );
+    static void setPolygonCandidatesCost( int nblp, StraightLabelPosition **lPos, int max_p, RTree<PointSet*, double, 2, double> *obstacles, double bbx[4], double bby[4] );
 
     /** Set cost to the smallest distance between lPos's centroid and a polygon stored in geoetry field */
-    static void setCandidateCostFromPolygon( LabelPosition* lp, RTree <PointSet*, double, 2, double> *obstacles, double bbx[4], double bby[4] );
+    static void setCandidateCostFromPolygon( StraightLabelPosition* lp, RTree <PointSet*, double, 2, double> *obstacles, double bbx[4], double bby[4] );
 
     /** sort candidates by costs, skip the worse ones, evaluate polygon candidates */
     static int finalizeCandidatesCosts( Feats* feat, int max_p, RTree <PointSet*, double, 2, double> *obstacles, double bbx[4], double bby[4] );
@@ -31,7 +32,7 @@ namespace pal
    */
   class PolygonCostCalculator
   {
-      LabelPosition *lp;
+      StraightLabelPosition *lp;
       double px, py;
       double dist[8];
       double rpx[8];
@@ -41,7 +42,7 @@ namespace pal
       void updatePoint( PointSet *pset );
       double updateLinePoly( PointSet *pset );
     public:
-      PolygonCostCalculator( LabelPosition *lp );
+      PolygonCostCalculator( StraightLabelPosition *lp );
 
       void update( PointSet *pset );
 

diff --git a/src/core/pal/feature.cpp b/src/core/pal/feature.cpp
@@ -165,11 +165,11 @@ namespace pal
     double offset = label_x / 4;
 
     // at the center
-    ( *lPos )[0] = new LabelPosition( id, lx, ly, label_x, label_y, alpha, cost,  this );
+    ( *lPos )[0] = new StraightLabelPosition( id, lx, ly, label_x, label_y, alpha, cost,  this );
     // shifted to the sides - with higher cost
     cost = 0.0021;
-    ( *lPos )[1] = new LabelPosition( id, lx+offset, ly, label_x, label_y, alpha, cost,  this );
-    ( *lPos )[2] = new LabelPosition( id, lx-offset, ly, label_x, label_y, alpha, cost,  this );
+    ( *lPos )[1] = new StraightLabelPosition( id, lx+offset, ly, label_x, label_y, alpha, cost,  this );
+    ( *lPos )[2] = new StraightLabelPosition( id, lx-offset, ly, label_x, label_y, alpha, cost,  this );
     return nbp;
   }
 
@@ -316,7 +316,7 @@ namespace pal
       else
         cost =  0.0001 + 0.0020 * double( icost ) / double( nbp - 1 );
 
-      ( *lPos )[i] = new LabelPosition( i, lx, ly, xrm, yrm, 0, cost,  this );
+      ( *lPos )[i] = new StraightLabelPosition( i, lx, ly, xrm, yrm, 0, cost,  this );
 
       icost += inc;
 
@@ -488,15 +488,15 @@ namespace pal
           reversed = ( alpha >= M_PI/2 || alpha < -M_PI/2 );
 
         if ( (!reversed && (flags & FLAG_ABOVE_LINE)) || (reversed && (flags & FLAG_BELOW_LINE)) )
-          positions->push_back( new LabelPosition( i, bx + cos( beta ) *distlabel , by + sin( beta ) *distlabel, xrm, yrm, alpha, cost, this ) ); // Line
+          positions->push_back( new StraightLabelPosition( i, bx + cos( beta ) *distlabel , by + sin( beta ) *distlabel, xrm, yrm, alpha, cost, this ) ); // Line
         if ( (!reversed && (flags & FLAG_BELOW_LINE)) || (reversed && (flags & FLAG_ABOVE_LINE)) )
-          positions->push_back( new LabelPosition( i, bx - cos( beta ) * ( distlabel + yrm ) , by - sin( beta ) * ( distlabel + yrm ), xrm, yrm, alpha, cost, this ) ); // Line
+          positions->push_back( new StraightLabelPosition( i, bx - cos( beta ) * ( distlabel + yrm ) , by - sin( beta ) * ( distlabel + yrm ), xrm, yrm, alpha, cost, this ) ); // Line
         if ( flags & FLAG_ON_LINE )
-          positions->push_back( new LabelPosition( i, bx - yrm*cos( beta ) / 2, by - yrm*sin( beta ) / 2, xrm, yrm, alpha, cost, this ) ); // Line
+          positions->push_back( new StraightLabelPosition( i, bx - yrm*cos( beta ) / 2, by - yrm*sin( beta ) / 2, xrm, yrm, alpha, cost, this ) ); // Line
       }
       else if (layer->arrangement == P_HORIZ)
       {
-        positions->push_back( new LabelPosition(i, bx - xrm/2, by - yrm/2, xrm, yrm, 0, cost, this) ); // Line
+        positions->push_back( new StraightLabelPosition(i, bx - xrm/2, by - yrm/2, xrm, yrm, 0, cost, this) ); // Line
         //positions->push_back( new LabelPosition(i, bx -yrm/2, by - yrm*sin(beta)/2, xrm, yrm, alpha, cost, this, line)); // Line
       }
       else
@@ -735,7 +735,7 @@ namespace pal
               if ( isPointInPolygon( mapShape->nbPoints, mapShape->x, mapShape->y, rx,  ry ) )
               {
                 // cost is set to minimal value, evaluated later
-                positions->push_back( new LabelPosition( id++, rx - dlx, ry - dly , xrm, yrm, alpha, 0.0001, this ) ); // Polygon
+                positions->push_back( new StraightLabelPosition( id++, rx - dlx, ry - dly , xrm, yrm, alpha, 0.0001, this ) ); // Polygon
               }
             }
           }

diff --git a/src/core/pal/labelposition.cpp b/src/core/pal/labelposition.cpp
@@ -55,10 +55,14 @@
 
 namespace pal
 {
-
-  LabelPosition::LabelPosition( int id, double x1, double y1, double w, double h, double alpha, double cost, Feature *feature ) : id( id ), cost( cost ), /*workingCost (0),*/ alpha( alpha ), feature( feature ), nbOverlap( 0 ), w( w ), h( h )
+  LabelPosition::LabelPosition( int id, double cost, Feature *feature )
+   : id( id ), cost( cost ), feature( feature ), nbOverlap( 0 )
   {
+  }
 
+  StraightLabelPosition::StraightLabelPosition( int id, double x1, double y1, double w, double h, double alpha, double cost, Feature *feature )
+    : LabelPosition( id, cost, feature ), alpha( alpha ), w( w ), h( h )
+  {
 
     // alpha take his value bw 0 and 2*pi rad
     while ( this->alpha > 2*M_PI )
@@ -119,7 +123,7 @@ namespace pal
     }
   }
 
-  bool LabelPosition::isIn( double *bbox )
+  bool StraightLabelPosition::isIn( double *bbox )
   {
     int i;
 
@@ -134,7 +138,7 @@ namespace pal
 
   }
 
-  void LabelPosition::print()
+  void StraightLabelPosition::print()
   {
     std::cout << feature->getLayer()->getName() << "/" << feature->getUID() << "/" << id;
     std::cout << " cost: " << cost;
@@ -146,8 +150,11 @@ namespace pal
     std::cout << std::endl;
   }
 
-  bool LabelPosition::isInConflict( LabelPosition *ls )
+  bool StraightLabelPosition::isInConflict( LabelPosition *lp )
   {
+    // TODO: more types of labelposition
+    StraightLabelPosition* ls = (StraightLabelPosition*) lp;
+
     int i, i2, j;
     int d1, d2;
 
@@ -194,17 +201,17 @@ namespace pal
     return id;
   }
 
-  double LabelPosition::getX() const
+  double StraightLabelPosition::getX( int i ) const
   {
-    return x[0];
+    return (i >= 0 && i < 4 ? x[i] : -1);
   }
 
-  double LabelPosition::getY() const
+  double StraightLabelPosition::getY( int i ) const
   {
-    return y[0];
+    return (i >= 0 && i < 4 ? y[i] : -1);
   }
 
-  double LabelPosition::getAlpha() const
+  double StraightLabelPosition::getAlpha() const
   {
     return alpha;
   }
@@ -228,7 +235,7 @@ namespace pal
     return feature;
   }
 
-  void LabelPosition::getBoundingBox(double amin[2], double amax[2]) const
+  void StraightLabelPosition::getBoundingBox(double amin[2], double amax[2]) const
   {
     amin[0] = DBL_MAX;
     amax[0] = -DBL_MAX;
@@ -263,12 +270,6 @@ namespace pal
   }
 
 
-  Label *LabelPosition::toLabel( bool active )
-  {
-    return new Label( this->x, this->y, alpha, feature->getUID(), feature->getLayer()->getName(), feature->getUserGeometry() );
-  }
-
-
   bool LabelPosition::polygonObstacleCallback( PointSet *feat, void *ctx )
   {
     PolygonCostCalculator *pCost = ( PolygonCostCalculator* ) ctx;
@@ -385,7 +386,7 @@ namespace pal
 
 
 
-  double LabelPosition::getDistanceToPoint( double xp, double yp )
+  double StraightLabelPosition::getDistanceToPoint( double xp, double yp )
   {
     int i;
     int j;
@@ -436,7 +437,7 @@ namespace pal
   }
 
 
-  bool LabelPosition::isBorderCrossingLine( PointSet* feat )
+  bool StraightLabelPosition::isBorderCrossingLine( PointSet* feat )
   {
     double ca, cb;
     for ( int i = 0;i < 4;i++ )
@@ -462,7 +463,7 @@ namespace pal
     return false;
   }
 
-  int LabelPosition::getNumPointsInPolygon( int npol, double *xp, double *yp )
+  int StraightLabelPosition::getNumPointsInPolygon( int npol, double *xp, double *yp )
   {
     int a, k, count = 0;
     double px, py;