map algorithm question
I am working on an application which draws maps on a screen. This is
done with using sets of x,y coordinates which are made into polygons and
then drawn in a paintComponent. The user now wants to add elevation (a
"z" component). The question at hand is how to quickly index into a data
structure to find an elevation point based on the mouse location (x,y)
of the screen. Currently, polygon.contains(x,y) is used. I was hoping
that someone might either relate how they might have done something
similar or a pointer to reference. Thanks - Lou
.
Relevant Pages
- mapping question
... I am working on an application which draws maps on a screen. ... This is done with using sets of x,y coordinates which are made into polygons and then drawn in a paintComponent. ... The question at hand is how to quickly index into a data structure to find an elevation point based on the mouse location of the screen. ... Although not exactly a GUI question I was hoping that someone might either relate how they might have done something similar or a pointer to reference. ...
(comp.lang.java.gui) - map algorithm question
... I am working on an application which draws maps on a screen. ... This is done with using sets of x,y coordinates which are made into polygons and then drawn in a paintComponent. ... The question at hand is how to quickly index into a data structure to find an elevation point based on the mouse location of the screen. ...
(comp.lang.java.programmer) - Re: map algorithm question
... with using sets of x,y coordinates which are made into polygons and then drawn in a paintComponent. ... The question at hand is how to quickly index into a data structure to find an elevation point based on the mouse location of the screen. ...
(comp.lang.java) - Re: DEM-like maps using TYP customisation (GARMIN)
... Greg proposes to convert existing elevation polylines into elevation ... In this case all higher polygons would overlap ...
(sci.geo.satellite-nav) |
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