J2ME似雪碧在Android [英] J2ME like Sprite on Android

问题描述

有关我我工作的一个仿真每月的无用项目运行在Android J2ME程序。但现在，我坚持与J2ME雪碧实现。它采用专门的转化。

For my useless project of the month I'm working on a 'emulator' to run J2ME programs on Android. But now I'm stuck with the J2ME Sprite implementation. Specifically the transformations used in it.

在我的雪碧我有三个字符图像的位图。我想画第二帧镜像或旋转90度。什么是它的最佳方式？

In my Sprite I have a bitmap with three character images. I would like to paint the second frame mirrored or rotated 90 degrees. What would be the best way for it?

我有以下code，它描绘了给定帧无需任何转换。

I have following code that paints the given frame without any transformations.

frameX，frameY上给予精灵位图框的位置坐标。

frameX, frameY are frame position coordinates on give sprite bitmap.

Rect src = new Rect(frameX, frameY, frameX + spriteWidth, frameY + spriteHeight);
Rect dst = new Rect(paintX, paintY, paintX + spriteWidth, paintY + spriteHeight);
canvas.drawBitmap(image, src, dst, null);

据我了解我需要在画布上的一些矩阵魔法，但我一直没能想出解决办法：）

As I understand I need to make some matrix magic on the canvas, but I have not been able to figure this out :)

推荐答案

您知道，Microemulator，一个开源项目，使得可以在Android上运行J2ME code，对吧？

You do know that Microemulator, an open source project, makes it possible to run J2ME code on Android, right?

http://www.microemu.org/

您总是可以看看，看看他们做什么。

You could always have a look and see what they do.

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