rotation

问题 I create a SKSpriteNode like that: var shape:SKSpriteNode = SKSpriteNode(color: UIColor.redColor(), size: CGSizeMake(CGFloat(sizeOfShape), CGFloat(sizeOfShape))) How can I achieve, that a SKSpriteNode has still smooth edges, after I've rotated it. Currently, it looks like that: As you see, the edges are jagged. 来源： https://stackoverflow.com/questions/25532760/make-edges-of-skspritenode-look-smooth-after-rotation

问题 I am having problems with images being squished in iOS7 using canvas. I have found the following post which seems to be headed in the right direction: HTML5 Canvas drawImage ratio bug iOS However, I am beyond the simple case of drawing an image, I am also rotating and scaling the context (for thumbnails with EXIF orientation data) before drawing the image. The code runs, but there is no image data in my thumbnails. I'm guessing this has to do with the canvas rotation and scaling. However, I'm

问题 I want to write a program that shifts an array by a set number of positions right or left based on the user's input (positive ->, negative <-). The program has to have O(n) complexity. I've written it this way but it doesn't work as it should. In the example the output should be "2, 3, 4, 5, 6, 1" but in my version is "6, 2, 3, 4, 5, 1". #include <stdio.h> #include <string.h> #include <math.h> void rotate(int *array, int N, int D); int main(){ int i; int array[] = {1, 2, 3, 4, 5, 6}; rotate

问题 My team is currently limited to drawing images on an opengl 1.4 platform, which means that we can't use any nifty texture mapping to draw an image (yes, we're confined to using the intel integrated graphics platform, it's very annoying). So far, we're able to draw, scale, and flip an image, but the guy doing the graphics claims that rotation via glRotate can't be done while using glDrawPixels, that we'd have to go to textures and so forth, which don't work on the Intel platform. I've bet him

问题 After drawing a Polygon shape on the map. I would like to change what direction the polygon is pointing when the map is refreshed by rotating around one of the points of the polygon. For example point the polygon in the direction of 90 degrees rotating around my first polygon point (code shown below). Can anyone provide any code examples of this working? I have seen some similar posts however examples given appear over complicated. poly = new google.maps.Polygon({ strokeWeight: 3, fillColor:

问题 I'm trying to create a PDF document with some pages in portrait and others in landscape, but seeing this example (iText7 - Page orientation and rotation) I found that the page rotates to landscape but the text also does it (PDF generated from iText7 samples), then, I need that the pages to rotate but the text continues from left to right, how in the next image. Note: I tried to use document.getPdfDocument().addNewPage(new PageSize(PageSize.A4.rotate())); but it works for one page, not for the

问题 I am using google maps to allow the user to draw a polygon then using maps APIs and some sort of geometries draw the min bounded square that cover the drawn polygon at angle of 16 degree i.e. the bounded square should bound the whole polygon area AND should be rotated 16 degree with respect to y-axis. your help is highly appreciated Regards 回答1: This is a complicated problem. I can outline the steps to get you most of the way there: Solution Outline Get the map projection (map.getProjection()

问题 I've been looking for solutions on how to make my image rotate around a single point but from what I've found nothing has really worked. What I know I can rotate using pygame.transform.rotate(surface, angle) I need to constantly reset the center so the image does not rotate on its rotated self. Need to update image to eliminate distortion At first the image looks like this Then when I rotate it a couple times it looks like this Here's my code import pygame class pyGameSetup: def __init__(self

问题 I am in search of methodology for rotating a button. without using animations..! I don't want use animations because of this. if any body has any idea please help me. xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/ll" android:gravity="center_vertical"> <TextView android:layout_width="fill_parent" android

问题 I have the following code for spinning a wheel with JS and CSS: var prefix = (function() { if (document.body.style.MozTransform !== undefined) { return "MozTransform"; } else if (document.body.style.WebkitTransform !== undefined) { return "WebkitTransform"; } else if (document.body.style.OTransform !== undefined) { return "OTransform"; } else { return "transform"; } }()), rotateElement = function(element, degrees) { var val = "rotate(-" + degrees + "deg)"; element.style[prefix] = val; element