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bgcolor="#88bbee"><font color="#000000">Class: transform</font>
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<p>this class provides basic higher-level interface for coordinate transforms</p>
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<a name="Methods">Methods</a>
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<font color="#000000"> </font>
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<a href="#__init__">__init__</a><br>
<a href="#get_scaling">get_scaling</a><br>
<a href="#get_scaling_xy">get_scaling_xy</a><br>
<a href="#map_transform">map_transform</a><br>
<a href="#set_move">set_move</a><br>
<a href="#set_rotation">set_rotation</a><br>
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<a href="#set_scaling">set_scaling</a><br>
<a href="#set_scaling_xy">set_scaling_xy</a><br>
<a href="#transform_4">transform_4</a><br>
<a href="#transform_list">transform_list</a><br>
<a href="#transform_xy">transform_xy</a><br>
<a href="#transform_xy_flat_list">transform_xy_flat_list</a><br>
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<font color="#000000">__init__ </font>
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<font color="#000088"><pre>
__init__ ( self, mat=None )
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<a name="get_scaling"></a>
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<font color="#000000">get_scaling </font>
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<font color="#000088"><pre>
get_scaling ( self )
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<p>computes the value of scaling from self</p>
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<a name="get_scaling_xy"></a>
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<font color="#000000">get_scaling_xy </font>
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<font color="#000088"><pre>
get_scaling_xy ( self )
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<p>computes the scaling for <code>x</code> and <code>y</code> separately</p>
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<a name="map_transform"></a>
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<font color="#000000">map_transform </font>
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<font color="#000088"><pre>
map_transform ( self, l )
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<p>this method can be used with map() function</p>
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<font color="#000000">set_move </font>
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<font color="#000088"><pre>
set_move (
self,
dx,
dy,
)
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<p>add an moving step to transformation matrix</p>
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<font color="#000000">set_rotation </font>
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<font color="#000088"><pre>
set_rotation ( self, angle )
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<p>add an rotation step to transformation matrix</p>
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<a name="set_scaling"></a>
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<font color="#000000">set_scaling </font>
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<font color="#000088"><pre>
set_scaling ( self, scale )
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<p>add an scaling step to transformation matrix, same scaling for both dimensions</p>
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<a name="set_scaling_xy"></a>
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<font color="#000000">set_scaling_xy </font>
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<font color="#000088"><pre>
set_scaling_xy (
self,
mx,
my,
)
</pre></font>
<p>add an scaling step to transformation matrix</p>
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<a name="transform_4"></a>
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<font color="#000000">transform_4 </font>
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<font color="#000088"><pre>
transform_4 ( self, list )
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<p>for items that have 4 coordinates (lines, rectangles) this transforms 'em all</p>
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<a name="transform_list"></a>
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<font color="#000000">transform_list </font>
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<font color="#000088"><pre>
transform_list ( self, l )
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<a name="transform_xy"></a>
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<font color="#000000">transform_xy </font>
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<font color="#000088"><pre>
transform_xy (
self,
x,
y,
)
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<a name="transform_xy_flat_list"></a>
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<font color="#000000">transform_xy_flat_list </font>
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<font color="#000088"><pre>
transform_xy_flat_list ( self, coords )
</pre></font>
<p>transforms a list that cointains alternating x,y values (not list of pairs
as self.transform_list)</p>
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