AffineTransformations和矩阵计算 #

https://forums.garmin.com/developer/connect-iq/f/discussion/336765/bitmap-transformation/1634475

https://forums.garmin.com/developer/connect-iq/f/discussion/336765/bitmap-transformation/1634475

https://forums.garmin.com/developer/connect-iq/f/discussion/336765/bitmap-transformation/1634475

矩阵图形变换 #

https://www.youtube.com/watch?v=AheaTd_l5Is

矩阵乘法知识回顾 #

https://www.shuxuele.com/algebra/matrix-multiplying.html

示例代码 #

图片旋转代码实现 #

每秒旋转一次

background =  WatchUi.loadResource(Rez.Drawables.Background0);

var transform = new Gfx.AffineTransform();
transform.initialize();
transform.rotate(Math.toRadians(clockTime.sec * 6).toFloat()); // 60秒转一圈
transform.translate(-screenXCenter, -screenYCenter);

dc.drawBitmap2(screenXCenter, screenYCenter, background,  {
	:transform => transform
});

图片移动 #

https://www.facer.io/watchface/U1ZU0n6DqZ?watchModel=galaxywatch4black

https://www.facer.io/watchface/MfAaayupHP?watchModel=galaxywatch4black