polygon

I'm trying a solve an exercise from Exploring Python book. But, I guess I don't understand concept of the recursion. I've written some Recursively function. Therefore I know some of the aspects. But, I don't have enough experience. And I've stopped to study programming about one year. Anyway, let me give you the full question: A polygon can be represented by a list of (x, y) pairs where each pair is a tuple: [ (x1, y1), (x2, y2), (x3, y3) , ... (xn, yn)]. Write a recursive function to compute the area of a polygon. This can be accomplished by “cutting off” a triangle, using the fact that a

I have two polygons with their vertices stored as Double coordinates. I'd like to find the intersecting area of these polygons, so I'm looking at the Clipper library (C++ version). The problem is, Clipper only works with integer math (it uses the Long type). Is there a way I can safely transform both my polygons with the same scale factor, convert their coordinates to Longs, perform the Intersection algorithm with Clipper, and scale the resulting intersection polygon back down with the same factor, and convert it back to a Double without too much loss of precision? I can't quite get my head

I am trying to create multiple polygons for a restaurant based on their delivery charges out of data I have here https://jsoneditoronline.org/?id=7a7287f99c0964ffd6125b4bb48a2e50 Here is what I already have https://codepen.io/mani619cash/pen/mpaqQq?editors=1000 It creates something like this based on the input data as shown in the Textarea What I want is something similar to below image, join the outer images to generate a polygon. Currently I tried to sort data in each polygon by lat,lon but still polygons are messed up Sort the coordinates by bearing from the center (only really works for

I'm using these function calls: glEnable(GL_BLEND) glEnable(GL_POLYGON_SMOOTH) glBlendFunc(GL_SRC_ALPHA_SATURATE, GL_ONE) It doesn't work and won't render. glEnable(GL_BLEND) glEnable(GL_POLYGON_SMOOTH) glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) It doesn't anti-alias. Try glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST) This is a mundane answer.. but if you want rounded corners, you'll probably want to use more more vertices at the corners and place them for a more rounded shape. You could also look into doing this procedurally.. but if you're doing a game and you want to get it finish, I'd

I am trying to plot a feature map (SOM) using python. To keep it simple, imagine a 2D plot where each unit is represented as an hexagon. As it is shown on this topic: Hexagonal Self-Organizing map in Python the hexagons are located side-by-side formated as a grid. I manage to write the following piece of code and it works perfectly for a set number of polygons and for only few shapes (6 x 6 or 10 x 4 hexagons for example). However one important feature of a method like this is to support any grid shape from 3 x 3. def plot_map(grid, d_matrix, w=10, title='SOM Hit map'): """ Plot hexagon map

When drawing polygons, Java2D leaves off the right and bottom edges. I understand why this is done. However, I would like to draw something that includes those edges. One thing that occurred to me was to follow fillPolygon with drawPolygon with the same coordinates, but this appears to leave a gap. (See the little triangular image at the bottom.) There are two possibilities, but I can't tell which. To enable antialiasing, I'm doing this: renderHints = new RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); renderHints.put(RenderingHints.KEY_RENDERING,