rect

场景 鼠标点击DataGridView的某个单元格时，此单元格添加一个自定义的控件，这里以 添加下拉框为例 效果 注： 博客主页： https://blog.csdn.net/badao_liumang_qizhi 关注公众号 霸道的程序猿 获取编程相关电子书、教程推送与免费下载。 实现 在设计器页面，找到DataGridView的单元格点击事件CellClick,然后双击进入其点击事件中 private void dataGridView_Task_ViewEdit_CellClick(object sender, DataGridViewCellEventArgs e) { //获取当前点击的列的index int currentColumnindex = dataGridView_Task_ViewEdit.CurrentCell.ColumnIndex; //获取当前行的index int currentRowindex = dataGridView_Task_ViewEdit.CurrentCell.RowIndex; switch (currentColumnindex) { case 2: //第三列-控制模式 Cell2Click(currentColumnindex,currentRowindex); break; case 3: //第四列-跳转条件 break

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm currently using this code: @Override public Bitmap transform(Bitmap source) { Bitmap result = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Config.ARGB_8888); Canvas canvas = new Canvas(result); final int color = 0xff424242; final Paint paint = new Paint(); final Rect rect = new Rect(0, 0, source.getWidth(),source.getHeight()); final RectF rectF = new RectF(rect); final float scale = context.getResources().getDisplayMetrics().density; final float roundDp = 10 * scale; paint.setAntiAlias(true); canvas.drawARGB(0, 0, 0, 0);

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: as the title says i'm trying to find the number of non-zero pixels in a certain area of a cv::Mat, namely within a RotatedRect. For a regular Rect one could simply use countNonZeroPixels on a ROI. However ROIs can only be regular (non rotated) rectangles. Another idea was to draw the rotated rectangle and use that as a mask. However openCV neither supports the drawing of rotated rectangles nor does countNonZeroPixels accept a mask. Does anyone have a solution for how to elegantly solve this ? Thank you ! 回答1: Ok, so here's my first take at

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: How using SDL_CreateTexture create transparent texture? By default I'm creating texure with such code: SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA8888,SDL_TEXTUREACCESS_TARGET, x, y); And then I'm paining on this texture with redirecting output to this texture. However at the end what I want to render this on screen any (nonupdated) pixel is black. I have tried different ways with using of: SDL_RenderClear(_Renderer); or even with drawing and on created texture with painting transparent Rect with different blending modes but all I had

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Just trying to make sense of JavaFX documentation re triangle mesh. This code works and draws a rectangle. public class Shape3DRectangle extends TriangleMesh { public Shape3DRectangle(float Width, float Height) { float[] points = { -Width/2, Height/2, 0, // idx p0 -Width/2, -Height/2, 0, // idx p1 Width/2, Height/2, 0, // idx p2 Width/2, -Height/2, 0 // idx p3 }; float[] texCoords = { 1, 1, // idx t0 1, 0, // idx t1 0, 1, // idx t2 0, 0 // idx t3 }; /** * points: * 1 3 * ------- texture: * |\ | 1,1 1,0 * | \ | ------- * | \ | | | * | \ | | |

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I need help with NinePatchDrawable: My app can download themes from the network. Almost all things work fine, except 9-Patch PNGs. final Bitmap bubble = getFromTheme("bubble"); if (bubble == null) return null; final byte[] chunk = bubble.getNinePatchChunk(); if (!NinePatch.isNinePatchChunk(chunk)) return null; NinePatchDrawable d = new NinePatchDrawable(getResources(), bubble, chunk, new Rect(), null); v.setBackgroundDrawable(d); d = null; System.gc(); getFromTheme() loads the Bitmap from the SD card. The 9-Patch PNGs are already compiled,

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: The problem I have an array of java.awt.Rectangle s. For those who are not familiar with this class, the important piece of information is that they provide an .intersects(Rectangle b) function. I would like to write a function that takes this array of Rectangle s, and breaks it up into groups of connected rectangles. Lets say for example, that these are my rectangles (constructor takes the arguments x , y , width , height ): Rectangle[] rects = new Rectangle[] { new Rectangle(0, 0, 4, 2), //A new Rectangle(1, 1, 2, 4), //B new Rectangle(0,

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I wrote a script that allows a user to control the sprite of an eagle to fly around to learn pygame. It seemed fine until i implemented a rotation function that makes the sprite rotate according to the direction it is flying along. The sprite becomes really fuzzy after moving a short while and an error soon pops up saying out of memory (at this line: eagle_img = pygame.transform.rotate(eagle_img,new_angle-angle) ) My code: # eagle movement script import pygame, math, sys from pygame.locals import * pygame.init() clock = pygame.time.Clock() #

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am creating a game of Pong in Pygame with Python (obviously) and am new to Pygame so would like some help working the physics of when the ball touches the paddle, it will reverse speeds and go the opposite direction. Everything works so far, but when the ball goes to the paddle, it goes right through it and does not change direction. I have it worked out so the paddles do not leave the screen and the ball changes direction when it meets a wall, but not when the ball meets a paddle. Any help or tips would be appreciated. My paddle class: