getpixel

问题 So, I have tried looking this up in many places, but have not yet found an answer for my situation. What I have is a loop, looping for each hour in a day for every day in a year, and, with many insanely ridiculous mathematical equations, getting the angle and distance of the sun at a specific location. The outcome of the equations gives me a number that I use as an x value to obtain to the image's pixel color at that point. The image is a gradient: when x=0; no sunlight, when x=(1/2

问题 This is my first post on this forum, please don't go hard on me if I didn't post it in the right place or if I did something wrong, I don't post in forums very much. So, I have this problem with GetPixel function. Basically, it should return the color decimal at x, y. The code I am about to post works perfectly on windows 7 32bit, but recently I bought a new laptop y50-70 with windows 8.1 64bit and the same code works completely different. I can't find any solution to the problem, can't even

问题 I have read through several articles which are alternatives to using setpixel/getpixel but I am not seeing how they relate to my issue. I have a multicoloured image which (depending on dynamic values taken from DB) changes the color of each pixel color group to a new color. Lets say I want all pixels with Argb value of -989556 changed to -16 & all pixels with Argb value of -1331 changed to -5383962. I am currently looking at every pixel in the Bitmap and checking their value, if they match

问题 I have read through several articles which are alternatives to using setpixel/getpixel but I am not seeing how they relate to my issue. I have a multicoloured image which (depending on dynamic values taken from DB) changes the color of each pixel color group to a new color. Lets say I want all pixels with Argb value of -989556 changed to -16 & all pixels with Argb value of -1331 changed to -5383962. I am currently looking at every pixel in the Bitmap and checking their value, if they match

问题 How to create Bitmap object from a Graphics object ? I would like to read pixels from my Graphics object. for example, like, System.Drawing.BitMap.GetPixel(). I am trying to find out empty area (all white, or of any colour) inside a pdf document, to write some graphics / image. I have tried like this, but it is not working. why the following code is not working as expected ? // // System.Drawing.Bitmap // System.Drawing.Graphics // Bitmap b = new Bitmap(width, height, graphics); // // In this

问题 today my question is as follows: I have a game, and one of the phases is that you have to pass a "protective cream" on the doll's body. I already have this effect (image below), I'm using an alpha filter combined with a mask that is drawn. I wonder how can I do to be checking after 20 seconds of the game, if the user has filled 100% of the masks ... My code is this (forgive me, I am beginner and Brazilian ... any questions ask me): stop(); import flash.display.Shape; import flash.events.Event

问题 My problem is getting the pixels in a window. I can't find a way to do this. I using standard windows functions and Direct2D (not DirectDraw). I am using standard initialization of new window: WNDCLASS wc; wc.style = CS_OWNDC; wc.lpfnWndProc = WndProc; wc.cbClsExtra = 0; wc.cbWndExtra = 0; wc.hInstance = hInstance; wc.hIcon = LoadIcon(NULL, IDI_APPLICATION); wc.hCursor = LoadCursor(NULL, IDC_ARROW); wc.hbrBackground = (HBRUSH)(6); wc.lpszMenuName = 0; wc.lpszClassName = L"WINDOW";

问题 Hello I am trying to get the color of a particular pixel on my JFrame. This is my code. My frame is red. The problem I am having is when I click the Frame it should return me the RGB color for red that is (255,0,0) but when I click at different points i sometimes get the RGB color for white (255,255,255) what is the problem in my code guys? public class guiTest extends JFrame { private static Shape ellipse; private static Robot rb; public guiTest() { super("4-connected approach"); setLayout

问题 I'm having some issues getting the RGB values of a bitmap in Android... This is what I'm doing: int[] temp = new int[width*height]; bit.getPixels(temp, 0, width, 0, 0, width, height); However, the colors don't seem to match the typical RGB values. For example, a white pixel will show up as -1, whereas the RGB value for it is 16777215. (I'm getting that value from this website: http://www.shodor.org/stella2java/rgbint.html) There's also a ton of negative values which don't seem to fit normal

问题 I remember a while ago reading about an alternative (aka faster) way to perform a getPixel() -ish method. Problem is, I don't remember where I read that, and I've searched thoroughly.. I think. The answer had something to do with locking the Bitmap in memory, or something like that. I need to run getPixel() multiple times "per-tick," which is very costly it seems. Does anyone know what I'm talking about? 回答1: You're probably thinking about Bitmap.getPixels() , which will copy any part of the