Not only is x + y + z = 0, but the absolute values of x, y and z are equal to twice the radius of the ring. This should be sufficient to identify every hexagon on each successive ring: var radius = 4; for(var i = 0; i < radius; i++) { for(var j … Read more
offsetX/offsetY are a neat extension by Microsoft to mouse event objects, and mean the position of the mouse pointer relatively to the target element. Sadly, they’re not implemented by Firefox, and there’s discordance among the other browsers about what should be the origin point: IE thinks it’s the content box, while Chrome, Opera and Safari … Read more
It sounds like your not converting between the proper views. A view’s frame is set to the coordinates of it’s superview, not its own internal coordinates, so if you were trying to convert the origin of a view to window coordinates, you would need to use the superview: [[self superview] convertPoint:self.frame.origin toView:theWindow]; However, it is … Read more
Apache PDFBox PDFDebugger 2.0.* displays PDF coordinates in the status bar. Get it here: https://pdfbox.apache.org/download.cgi Download the pdfbox-app-2.0.*.jar available under command line tools on above link. Then run the below command with the required file. java -jar pdfbox-app-2.0.*.jar PDFDebugger “InputFile” You would be able to see the coordinates by hovering the mouse on pdf page. … Read more
For clarity, let the “hexagonal” coordinates be (r,g,b) where r, g, and b are the red, green, and blue coordinates, respectively. The coordinates (r,g,b) and (x,y) are related by the following: y = 3/2 * s * b b = 2/3 * y / s x = sqrt(3) * s * ( b/2 + r) … Read more
If you use a Camera (which you should) changing the coordinate system is pretty simple: camera= new OrthographicCamera(Gdx.graphics.getWidth(), Gdx.graphics.getHeight()); camera.setToOrtho(true, Gdx.graphics.getWidth(), Gdx.graphics.getHeight()); If you use TextureRegions and/or a TextureAtlas, all you need to do in addition to that is call region.flip(false, true). The reasons we use y-up by default (which you can easily change as … Read more
You have it right, and it does feel a bit backwards. The row number is a y coordinate, and the column number is an x coordinate, and yet we usually write row,col but we also usually write x,y. Whether you want to write your array as [y][x] or [x][y] depends mostly on how much you … Read more
Here is a possible solution to my problem. Geographical coordinates must be stored properly. Example np.array([[Lon_A, Lat_A], [Lon_B, Lat_B], [Lon_C, Lat_C]]) Create the polygon Create the point to be tested Use polygon.contains(point) to test if point is inside (True) or outside (False) the polygon. Here is the missing part of the code: from shapely.geometry import … Read more
Using numpy, you can define the following: import numpy as np def cart2pol(x, y): rho = np.sqrt(x**2 + y**2) phi = np.arctan2(y, x) return(rho, phi) def pol2cart(rho, phi): x = rho * np.cos(phi) y = rho * np.sin(phi) return(x, y)