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geomland.parabola :foc :directrissa
constructs a parabola object.
Definition:
to geomland.parabola :foc :directrissa make local "type "parabola make local "norm line :foc 90 + (heading :directrissa) make local "antif isec :norm :directrissa make "norm line :antif :foc make local "spin heading :norm make local "center (:foc+:antif)/2 make local "radius (distance :antif :foc)/2 make local "color :def_parabola_color to ondrawimage output dll.graphix.drawparabola end end |
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