Re: Drawing on ZoomRasters

[Marcus G. Daniels]

>>>>> "CS" == Carl Scheffler <address@hidden> writes:

CS> Is it possible to access the raster directly and to draw a 'thin'
CS> line pixel by pixel and if so, how?

How about subclassing Raster instead of ZoomRaster, using coordinate
multiplication (or not) as appropriate per your routine and a zoom variable.

What does your line drawing routine do that is different?  Maybe it
should go in ZoomRaster?

CS> I've noticed that a line drawn on a ZoomRaster using the 
CS> lineX0:Y0:X1:... method remains a nice thin line, even if the 
CS> zoomfactor is quite high. 

Note that -lineX0:Y0:X1:Y1:Width:Color: also has a pen width argument,
so passing [raster getZoomFactor] as the width argument will make
line get wider per the zoom.


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