我想在 ActionScript 3 中绘制一个简单的三角形。
我使用“图形”类的“drawPath”方法。
这是代码片段:
stage.stage.quality = StageQuality.LOW; // Change quality to low so no anti-aliasing occurs
var trianglePoints:Vector.<Number> = new Vector.<Number>();
trianglePoints.push(0); trianglePoints.push(0); // Coordinate (0,0)
trianglePoints.push(20); trianglePoints.push(0); // Coordinate (20,0)
trianglePoints.push(20); trianglePoints.push(20); // Coordinate (20,20)
trianglePoints.push(0); trianglePoints.push(0); // Coordinate (0,0) - tried with and without this coordinate return
var commands:Vector.<int> = new Vector.<int>(4);
commands.push(1); // Move to
commands.push(2); // Line to
commands.push(2); // Line to
commands.push(2); // Line to
var drawSprite:Sprite = new Sprite();
drawSprite.graphics.beginFill(0xFFFF0000); // Color Red
drawSprite.graphics.drawPath(commands, trianglePoints); // Draw the path
drawSprite.graphics.endFill();
var bd:BitmapData = new BitmapData(100, 100, true, 0x0000FF00);
bd.draw(drawSprite);
var pngBytes:ByteArray = PNGEnc.encode(bd);
var fileReference:FileReference = new FileReference();
fileReference.save(pngBytes,"bd_custom_draw.png");
stage.stage.quality = StageQuality.HIGH;
我不知道为什么 - 而不是三角形的点在:
- (0,0)
- (20,0)
- (20,20)
绘制的三角形在 处有点:
- (0,0)
- (19,0)
- (19,19)
这是我从 Paint-Brush 中截取的屏幕截图,其中显示了像素:
为什么三角形没有在正确的坐标中绘制?
.
.
更新:
我试图在“drawPath”之前添加这一行:
currentMask.graphics.lineStyle(1, 0xFFFF0000);
这是我得到的结果:
我似乎无法得到我需要的结果!