java-2d

What I want My goal is to be able to display a large number of SVG images on a single drawing area in Java, each with its own translation/rotation/scale values. I'm looking for the simplest solution allowing this, optionally even using OpenGL to speed things up. What I've Tried My initial naive approach was to use SVGSalamander to draw directly on a JPanel, but the performance was pathetic. I poked around around and learned that I should do something like manually convert each SVG into a BufferedImage created with createCompatibleImage, then do the transformations I want, then draw it using

I'm developing game using Java Swing framework. Does anyone know good framework based on Swing? Mostly I care about performance of redrawing. Swing is fine for simple games, but if you really care about performance of redrawing, you should probably take a look at one of the frameworks based on OpenGL. Examples: http://www.lwjgl.org/ - quite a low level library but very fast. basically raw OpenGL. http://www.slick2d.org/ - a popular and fairly easy to use 2D game library. http://jmonkeyengine.com/ - a good choice if you want a full 3D engine. In particular, if you want to do more complex

I am trying to draw a rectangle in JPanel that would translate and then rotate itself to mimic the movement of a car. I have been able to make the rectangle translate and rotate, however it rotates around the origin of (0,0). I'm very pleased that I was able to have the rectangle move and rotate as I am very new to Java GUI, but I can not seem to get how to have the rectangle rotate around itself, because I experimented more with it, and when I initialized the rectangle and rotate it 45 degrees it's position was changed, which I would assume is the transform matrix that is appended from the

Is there an easy way to approximate the points (if any) where two instances of QuadCurve2D intersect? That is, how could I compute the coordinates of the red dots in this diagram? There is no obvious method in QuadCurve2D to do this. (note: the points are not exact as I have tweaked them manually for the diagram. Also note the "missing" fourth point which does not lie on the curve segment even though it lies on the (infinite) parabola.) These two curve segments were created with the following code: QuadCurve2D curve1 = new QuadCurve2D.Double(-2.00, -2.00, +0.75, +4.75, +2.00, -0.75);

When using the Graphics2D scale() function with two different parameters (scaling by different ratios in x- and y-direction), everything drawn later on this Graphics2D object is scaled too. This has the strange effect that lines drawn in one direction are thicker than those in another direction. The following program produces this effect, it shows this window: public class StrokeExample extends JPanel { public void paintComponent(Graphics context) { super.paintComponent(context); Graphics2D g = (Graphics2D)context.create(); g.setStroke(new BasicStroke(0.2f)); int height = getHeight(); int

After scratching around I found that it's best to implement a custom image component by extending a JLabel. So far that has worked great as I can add multiple "images" (jlabels without the layout breaking. I just have a question that I hope someone can answer for me. I noticed that in order to animate JLabels across the screen I need to setlayout(null); and setbounds of the component and then to animate eventually setlocation(x,y); . Is this a best practice or a terrible way to animate a component? I plan on eventually making an animation class but I don't want to do so and end up having to

Is there any good Scala or Java library for image manipulation? For simple tasks like composing an image with some others then generating a thumb? they're all a bit old school, and maybe inconvenient, but java.awt, java.awt.image, and javax.imageio has everything you need to blend and rescale images. You can find some blending example code e.g. here http://www.curious-creature.org/2006/09/20/new-blendings-modes-for-java2d/ you can find some examples of rescaling and generating image bytes e.g. here https://sourceforge.net/projects/ssim/?source=directory there are probably newer/easier