比例位圖SurfaceView

Question

這是我的代碼在Sprite類：

public class Sprite { 
    int x, y, vx, vy; 
    private Bitmap texture; 

    public Sprite(Bitmap texture) { 
     this.texture = texture; 
    } 

    public int getWidth() { 
     return texture.getWidth(); 
    } 

    public int getHeight() { 
     return texture.getHeight(); 
    } 

    public void draw(Canvas c) { 
     c.drawBitmap(texture, x, y, null); 
    } 
} 

與background.draw(c);我畫的背景。但是背景比屏幕大...

如何將它縮放到屏幕大小？

Answer 1

繪製時只設置位圖的左側屬性和頂部屬性。爲了擴展它，叫過載drawBitmap方法與寬度和高度，like this one

爲了讓你的想法：

public class Sprite { 
    int width, height; 
    private Bitmap texture; 

    public Sprite(Bitmap texture, width, height) { 
     this.texture = texture; 
     this.width = width; 
     this.height = height; 
    } 

    public int getWidth() { 
     return width; 
    } 

    public int getHeight() { 
     return height; 
    } 

    public void setWidth(int width) { 
     this.width = width; 
    } 

    public void setHeight(int height) { 
     this.height = height; 
    } 

    public void draw(Canvas c) { 
     c.drawBitmap(texture, null, new RectF(0, 0, width, height), null); 
    } 
} 

在活動，其中創建類雪碧，你必須做一些事情，如：

Display display = getWindowManager().getDefaultDisplay(); 
Sprite sprite = new Sprite(bitmap, display.getWidth(), display.getHeight())