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better sprites

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This commit is contained in:
Alessandro Mauri 2025-01-30 18:36:47 +01:00
parent b317951c32
commit fbe631b4b4
4 changed files with 59 additions and 12 deletions
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32
src/ugui_sprite.c3
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@ -21,6 +21,9 @@ struct SpriteAtlas {
bool should_update;
}
struct ElemSprite {
Id id;
}
// name: some examples are "icons" or "images"
fn void! SpriteAtlas.init(&this, String name, AtlasType type, ushort width, ushort height)
@ -118,13 +121,34 @@ fn void! Ctx.import_sprite_file_qoi(&ctx, String name, String path)
ctx.sprite_atlas.insert(name, pixels, (ushort)w, (ushort)h, (ushort)w)!;
}
// FIXME: test function, very different from every other function here
fn void! Ctx.draw_sprite(&ctx, String name)
fn void! Ctx.draw_sprite(&ctx, String label, String name, Point off = {0,0})
{
Id id = ctx.gen_id(label)!;
Elem *parent = ctx.get_parent()!;
Elem *elem = ctx.get_elem(id)!;
// add it to the tree
ctx.tree.add(id, ctx.active_div)!;
if (elem.flags.is_new) {
elem.type = ETYPE_SPRITE;
} else if (elem.type != ETYPE_SPRITE) {
return UgError.WRONG_ELEMENT_TYPE?;
}
Sprite* sprite = ctx.sprite_atlas.get(name)!;
Rect bounds = { 100, 100, sprite.w, sprite.h };
Rect uv = { sprite.u, sprite.v, sprite.w, sprite.h };
Rect bounds = { 0, 0, sprite.w, sprite.h };
elem.bounds = ctx.position_element(parent, bounds.off(off), true);
elem.sprite.id = ctx.get_sprite_atlas_id(name);
// if the bounds are null the element is outside the div view,
// no interaction should occur so just return
if (elem.bounds.is_null()) return;
Id tex_id = ctx.sprite_atlas.id;
return ctx.push_sprite(bounds, uv, tex_id)!;
return ctx.push_sprite(elem.bounds, uv, tex_id)!;
}