graphics

问题 Can anyone tell me how to combine or concatenate two bitmap images into one in android? 回答1: You can try with Paint. Here a short example: package com.cyrilmottier.android.masking; import android.app.Activity; import android.content.Context; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.PorterDuffXfermode; import android.graphics.PorterDuff;

问题 Because I'm a terrible, bad person who likes to do things differently for no reason, I'd love to be able to do something like mySprite.graphics.drawText(...). As I understand things, the only way to get text currently is to create a TextField and add it as a child of mySprite. In my particular situation I'd rather not do that. Any advice appreciated! ooo 回答1: If you wanted to wrap it up in a method of Sprite I would simply extend the Sprite class, add the function drawText to it. Within that

问题 I have a problem. I have this code: balls = [Ball() for i in range(1, 10)] So, when I say Ball() this will draw a ball on QDialog. And then when this is done, I am moving the balls around QDialog in an infinite loop. I want to say something like while QDialog.isVisible() move them around . I don't have any parent dialog or form or any child dialog or form. It's all just about this QDialog . I know that it's stupid to do with QDialog , but I am not allowed to use anything else than just

问题 I've just started using assembly language (felt like learning something new), and have run into a few questions (so far) that all the tutorials I've been looking through don't answer, or are too old to know. 1) I've tried a few searches (maybe I just don't know the right keywords), but I can't find an updated list of graphics modes for changing screen resolutions, etc. The best I've found is: Assembler Tutorial, and I'd hardly think that 640x480 is the best resolution assembly language can

问题 I've just started using assembly language (felt like learning something new), and have run into a few questions (so far) that all the tutorials I've been looking through don't answer, or are too old to know. 1) I've tried a few searches (maybe I just don't know the right keywords), but I can't find an updated list of graphics modes for changing screen resolutions, etc. The best I've found is: Assembler Tutorial, and I'd hardly think that 640x480 is the best resolution assembly language can

问题 I am trying to create a program which gets the handle of the window under your cursor, show's some data about it and draws a filled rectangle (with very low alpha) on top of the whole window. I am using C# and winforms. I have succeeded in doing so, but the problem is my draw method is in a BackgroundWorker's loop and it keeps making more and more rectangles (-> rectangle with higher alpha) on the window or when moving mouse to another window the old one still exists. I haven't managed to

问题 I am trying to create a program which gets the handle of the window under your cursor, show's some data about it and draws a filled rectangle (with very low alpha) on top of the whole window. I am using C# and winforms. I have succeeded in doing so, but the problem is my draw method is in a BackgroundWorker's loop and it keeps making more and more rectangles (-> rectangle with higher alpha) on the window or when moving mouse to another window the old one still exists. I haven't managed to

问题 I am new to Paper.js, and I was wondered by the event system, while reading tutorial. Thats how event hanling described in tutorial: var path; function onMouseDown(event) { // Create a path: path = new Path(); path.strokeColor = 'black'; // Add the mouse down position: path.add(event.point); } function onMouseUp(event) { // Add the mouse up position: path.add(event.point); } So, its just functions in global namespace... Eventually I have a few questions about it, and I didnt found anything on

问题 Is it possible for me to draw ABOVE all controls on a form ? I have some controls ( textboxes , buttons , COM objects ) on my form, and I wish to draw ON them, overriding any pixels previously drawn by them. I am using Windows Forms on C# . NOTE: the Graphics class draws under the controls... 回答1: Take a look at the code in this article: Draw Over WinForms Controls The author has created a component that (as he describes it) is like a piece of glass over your form. Your code then draws on

问题 I'm drawing a flat disk using gluDisk() in my scene. gluDisk() draws the disk facing the positive Z axis but I want it to be facing some arbitrary normal I have. Clearly I need to use glRotate() to get the disk facing properly but what should be the rotation? I remember this can be calculated using Quaternions but I can't seem to remember the math. 回答1: The solution should be pretty straightforward, and shouldn't require quarternions. The axis of rotation to get from Normal1 to Normal2 must