/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/baserenderer.py
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trunk/thuban/Thuban/UI/baserenderer.py revision 2571 by jonathan, Fri Feb 18 14:54:17 2005 UTC branches/WIP-pyshapelib-bramz/Thuban/UI/baserenderer.py revision 2755 by dpinte, Thu Apr 12 09:21:58 2007 UTC
# Line 454  class BaseRenderer: Line 454  class BaseRenderer:
454    
455          # True  -- warp the image to the size of the whole screen          # True  -- warp the image to the size of the whole screen
456          # False -- only use the bound box of the layer (currently inaccurate)          # False -- only use the bound box of the layer (currently inaccurate)
457          if True:          if True:
458          #if False:          #if False:
459              pmin = [0,height]              pmin = [0,height]
460              pmax = [width, 0]              pmax = [width, 0]
# Line 466  class BaseRenderer: Line 466  class BaseRenderer:
466          #print bb          #print bb
467          #print pmin, pmax          #print pmin, pmax
468    
469          fmin = [max(0, min(pmin[0], pmax[0])) - offx,          fmin = [max(0, min(pmin[0], pmax[0])) - offx,
470                  offy - min(height, max(pmin[1], pmax[1]))]                  offy - min(height, max(pmin[1], pmax[1]))]
471    
472          fmax = [min(width, max(pmin[0], pmax[0])) - offx,          fmax = [min(width, max(pmin[0], pmax[0])) - offx,
473                  offy - max(0, min(pmin[1], pmax[1]))]                  offy - max(0, min(pmin[1], pmax[1]))]
474    
475          xmin = fmin[0]/self.scale          xmin = fmin[0]/self.scale
# Line 483  class BaseRenderer: Line 483  class BaseRenderer:
483          options = 0          options = 0
484          options = options | layer.MaskType()          options = options | layer.MaskType()
485    
486          img_data = self.projected_raster_layer(layer, in_proj, out_proj,          img_data = self.projected_raster_layer(layer, in_proj, out_proj,
487                      (xmin,ymin,xmax,ymax), [0,0], (width, height), options)                      (xmin,ymin,xmax,ymax), [0,0], (width, height), options)
488    
489          if img_data is not None:          if img_data is not None:
490              data = (width, height, img_data)              data = (width, height, img_data)
491              self.draw_raster_data(fmin[0]+offx, offy-fmax[1], data, "RAW")              self.draw_raster_data(fmin[0]+offx, offy-fmax[1],
492                                      data, format="RAW", opacity=layer.Opacity())
493              data = None              data = None
494    
495      def projected_raster_layer(self, layer, srcProj, dstProj, extents,      def projected_raster_layer(self, layer, srcProj, dstProj, extents,
# Line 522  class BaseRenderer: Line 523  class BaseRenderer:
523    
524          raise NotImplementedError          raise NotImplementedError
525    
526      def draw_raster_data(self, x, y, data, format="BMP"):      def draw_raster_data(self, x, y, data, format="BMP", opacity=1.0):
527          """Draw the raster image in data onto the DC with the top          """Draw a raster image held in data onto the DC with the top
528          left corner at (x,y)          left corner at (x,y)
529    
530          The raster image data is a tuple of the form          The raster image data is a tuple of the form
# Line 540  class BaseRenderer: Line 541  class BaseRenderer:
541          The following format names should be used:          The following format names should be used:
542    
543            'RAW'  -- an array of RGB values (len=3*width*height)            'RAW'  -- an array of RGB values (len=3*width*height)
544              'PNG'  -- Portable Network Graphic (transparency supported)
545            'BMP'  -- Windows Bitmap            'BMP'  -- Windows Bitmap
546              'TIFF' -- Tagged Image File Format
547              'GIF'  -- GIF Image
548            'JPEG' -- JPEG Image            'JPEG' -- JPEG Image
549    
550          The default format is 'BMP'.          The default format is 'BMP'.
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