#5922 - Support rotation of TrueType symbol in UTFGrid

Author: Charles Plante

maputfgrid.cpp

@@ -808,6 +808,16 @@ int utfgridRenderGlyphs(imageObj *img, textPathObj *tp, colorObj *c, colorObj *o
   box.line_to((x+size)/r->utfresolution,(y-size)/r->utfresolution);
   box.line_to((x)/r->utfresolution,(y-size)/r->utfresolution);
 
+     /* Rotation if necessary. */
+  if( tp->glyphs->rot != 0) {
+    mapserver::trans_affine mtx;
+    mtx *= mapserver::trans_affine_translation(-x/r->utfresolution,-y/r->utfresolution);
+    mtx *= mapserver::trans_affine_rotation(-tp->glyphs->rot);
+    mtx *= mapserver::trans_affine_translation(x/r->utfresolution,y/r->utfresolution);
+    box.transform(mtx);
+  } 
+
+
   /* Rendering the symbol */
   utfgridRenderPath(img, box);
 

msautotest/renderers/expected/utfgrid_truetype_symbol_rotation.json

@@ -0,0 +1 @@
+{"grid":["                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","                                                  ","     !!                                           ","    !!!!                                          ","   !!!!!!                                         ","   !!!!!!                                         ","    !!!!                                          ","     !!                                           ","                                                  ","                                                  ","                                                  "],"keys":["","1"],"data":{}}

msautotest/renderers/utfgrid_truetype_symbol.map

@@ -1,5 +1,6 @@
 # RUN_PARMS: utfgrid_truetype_symbol_labelcache.json [SHP2IMG] -m [MAPFILE] -l symbol-labelcache -i json -o [RESULT]
 # RUN_PARMS: utfgrid_truetype_symbol_nolabelcache.json [SHP2IMG] -m [MAPFILE] -l symbol-nolabelcache -i json -o [RESULT]
+# RUN_PARMS: utfgrid_truetype_symbol_rotation.json [SHP2IMG] -m [MAPFILE] -l symbol-rotation -i json -o [RESULT]
 #
 #
 MAP
@@ -70,4 +71,35 @@ LAYER
     TEXT 'label_sample'
   END
 END
+
+# This layer renders the symbol to the utfgrid whith a rotation
+LAYER
+  NAME "symbol-rotation"
+  TYPE point
+  STATUS OFF
+  LABELCACHE OFF
+  CLASS
+    NAME "test1"
+    STYLE
+        SYMBOL "ttf"
+        COLOR 0 0 0
+        SIZE 15
+        ANGLE 45
+    END
+    LABEL
+	 COLOR  12 0 150
+	 OUTLINECOLOR 0 0 255
+	 TYPE truetype
+	 SIZE 6
+	 POSITION AUTO
+    END
+  END
+  FEATURE
+    POINTS
+        50 50
+    END
+    TEXT 'label_sample'
+  END
+END
+
 END #MAP