Drawing triangle/arrow on a line with CGContext
- by Pete
Hi,
I am using the framework of route-me for working with locations.
In this code the path between two markers(points) will be drawn as a line.
My Question: "What code should I add if I want to add an arrow in the middle(or top) of the line, so that it points the direction"
Thanks
- (void)drawInContext:(CGContextRef)theContext
{
renderedScale = [contents metersPerPixel];
float scale = 1.0f / [contents metersPerPixel];
float scaledLineWidth = lineWidth;
if(!scaleLineWidth) {
scaledLineWidth *= renderedScale;
}
//NSLog(@"line width = %f, content scale = %f", scaledLineWidth, renderedScale);
CGContextScaleCTM(theContext, scale, scale);
CGContextBeginPath(theContext);
CGContextAddPath(theContext, path);
CGContextSetLineWidth(theContext, scaledLineWidth);
CGContextSetStrokeColorWithColor(theContext, [lineColor CGColor]);
CGContextSetFillColorWithColor(theContext, [fillColor CGColor]);
// according to Apple's documentation, DrawPath closes the path if it's a filled style, so a call to ClosePath isn't necessary
CGContextDrawPath(theContext, drawingMode);
}
