UIImage+Render.m

- (UIImage *)render:(CGRect)frame {
    if (CGRectIsEmpty(frame) || CGRectIsInfinite(frame) || CGRectIsNull(frame)) {
        return nil;
    }
    
    UIGraphicsBeginImageContextWithOptions(frame.size, NO, 0); // same as [[UIScreen mainScreen] scale]
    
    // drawing code
    
    // Create new image
    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    
    // newImage = [newImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
    // newImage = [newImage resizableImageWithCapInsets:UIEdgeInsetsMake(r, r, r, r)];
    
    return newImage;
}

// gist static frame size variant
UIImage *<#name#>Image() {
    CGRect frame = CGRectMake(0, 0, <#width#>, <#height#>);
    
    // Create context
    UIGraphicsBeginImageContextWithOptions(frame.size, NO, 0);
    
    // Render
    
    
    // Create new image
    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    return newImage;
}