Here’re some of my thoughts after some experiments on vector assets: 1. Compile time support After several trials, I believe that it’s just a compile time support. Xcode generate all the 1x, 2x and 3x images at compile time. Which means it works with older iOS versions. At the same time, it means that in … Read more
The formula is given here for vertices sorted by their occurance along the polygon’s perimeter. For those having difficulty understanding the sigma notation in those formulas, here is some C++ code showing how to do the computation: #include <iostream> struct Point2D { double x; double y; }; Point2D compute2DPolygonCentroid(const Point2D* vertices, int vertexCount) { Point2D … Read more
Here is how you can create a rounded rectangle with SVG Path: <path d=”M100,100 h200 a20,20 0 0 1 20,20 v200 a20,20 0 0 1 -20,20 h-200 a20,20 0 0 1 -20,-20 v-200 a20,20 0 0 1 20,-20 z” /> Explanation m100,100: move to point(100,100) h200: draw a 200px horizontal line from where we are … Read more
How to use vectors in Xcode (7 and 6.3+): Save an image as a .pdf file at the proper @1x size (e.g. 24×24 for a toolbar button). In your Images.xcassets file, create a new Image Set. In the Attributes Inspector, set the Scale Factors to Single Vector. Drag and drop your pdf file into the … Read more
I can recommend the SVG Primer (published by the W3C), which covers this topic: http://www.w3.org/Graphics/SVG/IG/resources/svgprimer.html#SVG_in_HTML If you use <object> then you get raster fallback for free*: <object data=”https://stackoverflow.com/questions/4476526/your.svg” type=”image/svg+xml”> <img src=”https://stackoverflow.com/questions/4476526/yourfallback.jpg” /> </object> *) Well, not quite for free, because some browsers download both resources, see Larry’s suggestion below for how to get around that. … Read more