blob: 215b23faffd0525c2ca0f4c605eb58d9ec6f68e4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
#import "UIImage+MGLAdditions.h"
@implementation UIImage (MGLAdditions)
- (std::unique_ptr<mbgl::SpriteImage>)mgl_spriteImage
{
CGImageRef cgImage = self.CGImage;
size_t width = CGImageGetWidth(cgImage);
size_t height = CGImageGetHeight(cgImage);
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
mbgl::PremultipliedImage cPremultipliedImage({ static_cast<uint32_t>(width), static_cast<uint32_t>(height) });
size_t bytesPerPixel = 4;
size_t bytesPerRow = bytesPerPixel * width;
size_t bitsPerComponent = 8;
CGContextRef context = CGBitmapContextCreate(cPremultipliedImage.data.get(),
width, height, bitsPerComponent, bytesPerRow,
colorSpace, kCGImageAlphaPremultipliedLast);
CGContextDrawImage(context, CGRectMake(0, 0, width, height), cgImage);
CGContextRelease(context);
CGColorSpaceRelease(colorSpace);
return std::make_unique<mbgl::SpriteImage>(std::move(cPremultipliedImage), float(self.scale));
}
@end
|
