Geomview For Windows?
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getting started with geomview
hi stuart, tamara, mark, daeron, et al -- first off, thanks for your work with geomview. i and lots of others really appreciate your effort in building something and putting it out. after years of GL hacking, i'm looking around for visualization alternatives. i have a simple task in mind, and i'm trying to implement it in geomview and inventor just to get an idea of what's required. here's the task: i want to visualize line/point duality in the plane. very simple. given a line with implicit equation ax + by + c [subject to a^2 + b^2 + c^2 = 1], dualize the line to the point a, b and similarly dualize a point a,b to a line (a,b,c). what would be required to visualize this? two 2d cartesian coordinate systems xy and ab, in (perhaps, but not necessarily) separate windows a "constructor" that gives a new line in xy (perhaps by connecting two points) or a new point in ab. each invocation would construct its dual in the other view, suitably positioned for selection a "manipulator" to select, highlight, and move points/lines, and recompute their duals as needed. i spent the morning reading through geomview doc and sources, and running examples. it wasn't at all clear to me that i can do what i want with geomview. first, i didn't see any two-viewport examples (this is not a big problem, although it would be nice to partition the spaces). second, how exactly do i select and move a primitive? i.e., highlight a vertex and move it around in some reasonable plane, or highlight a line (segment) and move it around? anyway, i was hoping you all could point me to, or supply me with, examples which are modifiable to do what i need to do. thanks, seth ps please give my regards to nina, my ex-office-mate. -- princeton CS dept, 35 olden st, princeton NJ 08544-2087 USA tel(555) 555-5555 _________________________ fax(555) 555-5555
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