A simple Objective-C program to show the control point values for the constants in the CAMediaTimingFunction class

show-constants.m

/*
show-constants.m

Show the control point values for the CAMediaTimingFunction class constants

To compile:

    clang -framework QuartzCore -framework Foundation show-constants.m -o show-constants
*/

#import <QuartzCore/QuartzCore.h>

int main(int argc, char *argv[]) {
    @autoreleasepool {
        NSArray* functions = @[
            kCAMediaTimingFunctionLinear,
            kCAMediaTimingFunctionEaseIn, 
            kCAMediaTimingFunctionEaseOut, 
            kCAMediaTimingFunctionEaseInEaseOut,
            kCAMediaTimingFunctionDefault,
        ];

        float coords[2];

        for (id obj in functions) {
            NSString* function_name = (NSString*) obj;
            CAMediaTimingFunction* func = [CAMediaTimingFunction functionWithName:function_name];
            printf("%-13s ", [function_name cStringUsingEncoding:NSUTF8StringEncoding]);
            for (int i = 0; i <= 3; i++) {
                [func getControlPointAtIndex:i values:coords];
                printf("(%.2f, %.2f)%s", coords[0], coords[1], i < 3 ? ", " : "\n");
            }
        }

        return 0;
    }
}