A Simple, 2d cross-platform graphics library for c or c++? [closed]
What about SDL? Perhaps it’s a bit too complex for your needs, but it’s certainly cross-platform.
graphics
Convert string to Brushes/Brush color name in C#
Recap of all previous answers, different ways to convert a string to a Color or Brush: // best, using Color’s static method Color red1 = Color.FromName(“Red”); // using a ColorConverter TypeConverter tc1 = TypeDescriptor.GetConverter(typeof(Color)); // ..or.. TypeConverter tc2 = new ColorConverter(); Color red2 = (Color)tc.ConvertFromString(“Red”); // using Reflection on Color or Brush Color red3 = … Read more
Is storing Graphics objects a good idea?
No, storing a Graphics object is usually a bad idea. 🙂 Here’s why: Normally, Graphics instances are short-lived and is used to paint or draw onto some kind of surface (typically a (J)Component or a BufferedImage). It holds the state of these drawing operations, like colors, stroke, scale, rotation etc. However, it does not hold … Read more
In MATLAB, how do I plot to an image and save the result without displaying it?
When you create the figure you set the Visibile property to Off. f = figure(‘visible’,’off’) Which in your case would be im = imread(‘image.tif’); f = figure(‘visible’,’off’), imshow(im, ‘Border’, ‘tight’); rectangle(‘Position’, [100, 100, 10, 10]); print(f, ‘-r80’, ‘-dtiff’, ‘image2.tif’); And if you want to view it again you can do set(f,’visible’,’on’)
How to concatenate icons into a single image with ImageMagick?
convert works much better than montage. It arranges images vertically or horizontally and keeps png transparency. convert *.png -append sprites.png (append vertically) convert *.png +append sprites.png (append horizontally)
Javascript drawing library? [closed]
Raphael is pretty cool for that, and works across browsers since it uses VML (for MSIE) and SVG (for everything else).
How to center an annotation horizontally over a point?
Use the horizontalalignment (which can be shortened as ha) option to the annotate call: text_object = plt.annotate(label, xy=(x_values[i], y_values[i]), ha=”center”)
Convert a quadratic bezier to a cubic one
From https://fontforge.org/docs/techref/bezier.html#converting-truetype-to-postscript: Any quadratic spline can be expressed as a cubic (where the cubic term is zero). The end points of the cubic will be the same as the quadratic’s. CP0 = QP0 CP3 = QP2 The two control points for the cubic are: CP1 = QP0 + 2/3 *(QP1-QP0) CP2 = QP2 + 2/3 … Read more
How to fill a Path in Android with a linear gradient?
While steelbytes’ answer will probably give you more control over the individual sections of the gradient, you can do it without the path: Paint m_Paint = new Paint(); protected void onDraw(Canvas canvas) { super.onDraw(canvas); // start at 0,0 and go to 0,max to use a vertical // gradient the full height of the screen. m_Paint.setShader(new … Read more
Android Graphics Internals
There are two core pieces to Android graphics: SurfaceFlinger and Skia. SurfaceFlinger is Android’s compositor, used by the window manager to create and display windows (actually called surfaces.) SurfaceFlinger is implemented on top of OpenGL ES 1.x currently and can also use other hardware acceleration techniques when available (MDP, a 2D blitter on the T-Mobile … Read more