MemoryImage

This provides two image classes and a bunch of functions that work on them.

Why are they separate classes? I think the operations on the two of them are necessarily different. There's a whole bunch of operations that only really work on truecolor (blurs, gradients), and a few that only work on indexed images (palette swaps).

Even putpixel is pretty different. On indexed, it is a palette entry's index number. On truecolor, it is the actual color.

A greyscale image is the weird thing in the middle. It is truecolor, but fits in the same size as indexed. Still, I'd say it is a specialization of truecolor.

There is a subset that works on both

An image in memory

@safe

interface MemoryImage {

TrueColorImage getAsTrueColorImage();

int width();

int height();

Color getPixel(int x, int y);

void setPixel(int x, int y, Color clr);

MemoryImage clone();

static MemoryImage fromImage(T filename);

alias fromImageFile = fromImage;

}

Members

Aliases

fromImageFile alias fromImageFile = fromImage: Convenient alias for fromImage

Functions

clone MemoryImage clone(): Returns a copy of the image
getAsTrueColorImage TrueColorImage getAsTrueColorImage(): gets it as a TrueColorImage. May return this or may do a conversion and return a new image
getPixel Color getPixel(int x, int y): Get image pixel. Slow, but returns valid RGBA color (completely transparent for off-image pixels).
height int height(): Image height, in pixels
setPixel void setPixel(int x, int y, Color clr): Set image pixel.
width int width(): Image width, in pixels

Static functions

fromImage MemoryImage fromImage(T filename): Load image from file. This will import arsd.image to do the actual work, and cost nothing if you don't use it.

MemoryImage

Members

Aliases

Functions

Static functions

Meta

Source