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const std = @import("std");
const Allocator = std.mem.Allocator;
pub fn Bitmap(PixelType: type) type {
return struct {
const Self = @This();
pixels: []PixelType,
width: usize,
height: usize,
/// Creates a new Bitmap instance and allocates the `pixels` buffer.
pub fn init_undefined(gpa: Allocator, width: usize, height: usize) !Self {
const self: Self = .{
.width = width,
.height = height,
.pixels = try gpa.alloc(PixelType, width * height),
};
return self;
}
pub fn from_buffer(buffer: []PixelType, width: usize, height: usize) Self {
return .{
.width = width,
.height = height,
.pixels = buffer,
};
}
pub inline fn pixel(self: *Self, x: usize, y: usize) ?*PixelType {
return if (x < self.width and y < self.height)
self.pixels[x + self.width * y]
else
null;
}
pub fn deinit(self: Self, gpa: Allocator) void {
gpa.free(self.pixels);
}
};
}
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