我想使用三個或四個圖像描邊CGContext
路徑,但在繪製路徑時隨機循環顯示圖像。我想繪製圖像INSTEAD!現在我畫了CGContext
。我有這樣的代碼到目前爲止如何使用多個隨機圖像對CGContext路徑進行描邊
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch = [touches anyObject];
CGPoint currentPoint = [touch locationInView:self.view];
currentPoint.x = currentPoint.x;
currentPoint.y = currentPoint.y;
mouseSwiped = YES;
UIGraphicsBeginImageContext(self.view.frame.size);
[drawImage.image drawInRect:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
CGContextSetShouldAntialias(UIGraphicsGetCurrentContext(), YES);
CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound);
CGContextSetLineWidth(UIGraphicsGetCurrentContext(), brushSizeVal);
CGContextSetAlpha(UIGraphicsGetCurrentContext(), drawingColorAlpha);
CGContextSaveGState(UIGraphicsGetCurrentContext()); //Probably right here
CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(),
drawingColorRed,
drawingColorGreen,
drawingColorBlue,
drawingColorAlpha);
CGContextBeginPath(UIGraphicsGetCurrentContext());
CGContextMoveToPoint(UIGraphicsGetCurrentContext(),
lastPoint.x,
lastPoint.y);
CGContextAddLineToPoint(UIGraphicsGetCurrentContext(),
currentPoint.x,
currentPoint.y);
CGContextStrokePath(UIGraphicsGetCurrentContext());
drawImage.image = UIGraphicsGetImageFromCurrentImageContext(); //drawImage is the UIImageView that I am drawing my context to
NSLog(@"current point x: %d current point y: %d",currentPoint.x, currentPoint.y); //Used for my purposes
lastPoint = currentPoint;
mouseMoved++;
和
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
if (!optionsDisplayerVisible && canDraw)
{
if(!mouseSwiped)
{
UIGraphicsBeginImageContext(self.view.frame.size);
[drawImage.image drawInRect:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
CGContextSetShouldAntialias(UIGraphicsGetCurrentContext(), YES);
CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound);
CGContextSetLineWidth(UIGraphicsGetCurrentContext(), brushSizeVal);
CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(),
drawingColorRed,
drawingColorGreen,
drawingColorBlue,
drawingColorAlpha);
CGContextMoveToPoint(UIGraphicsGetCurrentContext(), lastPoint.x, lastPoint.y);
CGContextAddLineToPoint(UIGraphicsGetCurrentContext(), lastPoint.x, lastPoint.y);
CGContextStrokePath(UIGraphicsGetCurrentContext());
CGContextFlush(UIGraphicsGetCurrentContext());
drawImage.image = UIGraphicsGetImageFromCurrentImageContext(); //drawImage is the UIImageView that I am drawing to
UIGraphicsEndImageContext();
}
}
}
描述你想要什麼更具體;那麼請描述你的代碼實際上在你提交的狀態下做了什麼。 – dlamblin 2009-12-25 18:32:16
你是否每次都有意地在你自己的圖像上繪製自己的圖像? – 2009-12-25 18:44:10
我想繪製圖像,而不是現在繪製CGContext。如果你需要更多的探索,然後問。 – Jaba 2009-12-26 00:14:21