struct Atlas
type Atlas* = struct {
i: image::Image // source image
cs: th::Vf2 // size of a cell in pixels
dm: th::Vf2 // amount of cells in image
}
Atlas is an image containing tiles in a square grid.
fn mk
fn mk*(i: image::Image, dm: th::Vf2): Atlas {
i: source image dm: amount of cells
fn mk2
fn mk2*(i: image::Image, cs: th::Vf2): Atlas {
i: source image cs: size of a cell in pixels
fn Atlas.coords
fn (a: ^Atlas) coords*(n: int): th::Vf2 {
returns the coordinates of the nth tile
fn Atlas.rect
fn (a: ^Atlas) rect*(n: int): rect::Rect {
returns the rectangle of the nth tile
fn Atlas.index
fn (a: ^Atlas) index*(at: th::Vf2): int {
returns the index of the tile at the given coordinates
fn Atlas.has
fn (a: ^Atlas) has*(at: th::Vf2): bool {
returns true if the tile at the given coordinates exists
fn Atlas.hasIndex
fn (a: ^Atlas) hasIndex*(n: int): bool {
returns true if the tile at the given index exists
fn Atlas.cropSource
fn (a: ^Atlas) cropSource*(at: th::Vf2) {
Crops the sourse image to only show a wanted tile
enum PackStrategy
type PackStrategy = enum {
square
row
column
}
fn pack
fn pack*(images: []image::Image, strategy: PackStrategy): (Atlas, std::Err) {
Packs an array of images into an atlas
fn Atlas.draw
fn (a: ^Atlas) draw*(at: th::Vf2, t: th::Transform) {
Draws the tile at at