How to avoid this degree to radian error?
core-animation, core-plot, iphone, pie-chart
Solution
Just define a macro like:
#define DEGREES_RADIANS(angle) ((angle) / 180.0 * M_PI)
And change your method like:
CATransform3D transform = CATransform3DMakeRotation(DEGREES_RADIANS(360), 0, 0, 1);
Problem
While developing pie chart using core plot I added animation for that for given code ``` CABasicAnimation *rotation = [CABasicAnimation animationWithKeyPath:@"transform"]; CATransform3D transform = CATransform3DMakeRotation(DegreesToRadians(360), 0, 0, 1); rotation.toValue = [NSValue valueWithCATransform3D:transform]; rotation.duration = 10.0f; [pieChart addAnimation:rotation forKey:@"rotation"]; ``` This code gives following error Semantic Issue: ``` Implicit declaration of function 'DegreesToRadians' is invalid in C99 ``` What can I do for avoid this? And also run time it gives following error: ``` Apple_o Linker id error "_DegreesToRadians", referenced from: ``` Thanks and Regards Vijayakumar iOS Developer at Rhytha https://rhytha.com/