Android游戏开发学习之引擎用法实例详解

float x=body.getPosition().x*RATE; float y=body.getPosition().y*RATE;

canvas.drawCircle(x, y, radius, paint); //画圆 paint.setStyle(Style.STROKE); //设置空心无填充

paint.setStrokeWidth(1); paint.setColor(color); //画边

canvas.drawCircle(x, y, radius, paint); paint.reset(); //恢复画笔设置

} }

(4)矩形刚体类MyRectColor

package box2d.bheap;   import static box2d.bheap.Constant.RATE;
import org.jbox2d.dynamics.Body;   import android.graphics.Canvas;
import android.graphics.Matrix;   import android.graphics.Paint;
public class MyRectColor extends MyBody {   float halfWidth;//半宽
float halfHeight;//半高   public MyRectColor(Body body,float halfWidth,float halfHeight,int color)
{   this.body=body;
this.halfWidth=halfWidth;   this.halfHeight=halfHeight;
this.color=color;   }
public void drawSelf(Canvas canvas,Paint paint)   {
paint.setColor(color&0x8CFFFFFF);   float x=body.getPosition().x*RATE;
float y=body.getPosition().y*RATE;   float angle=body.getAngle();
canvas.save();   Matrix m1=new Matrix();
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Android游戏开发学习之引擎用法实例详解

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