Sprite Size Aspect Ratio By Height

Suggestions
1

It would be nice if the function sprite also scale in aspect ratio by height. Currently it’s only possible by width.
sprite("image", 0, 0, width) -- without arg height it will be calculated automatically
I want: sprite("image", 0, 0, nil, height) -- error: number expected
It’s nice to have. Of course, I also could calculate the ratio size by my own. But is more comfortable to use api.

2

You can override the API if you wish, just make sure you save a reference to whatever you override. eg:

_sprite = sprite --save the sprite command before overwriting it

function sprite(image, x,y,w,h) -- your new version
  --your code to calculate aspect ratio based on height goes here
  _sprite(image,x,y,w,h) --draw the sprite
end
3

Good idea. Here’s my code. It works.

-- sprite(image, x, y, w, h)
-- usage: sprite("Documents:mySprite", WIDTH/2, HEIGHT/2, nil, HEIGHT)
_sprite = sprite
function sprite(image, x, y, w, h)        
    if w == nil and h ~= nil then
        local sw, sh = spriteSize(image)
        _sprite(image, x, y, (sw / sh) * h, h)
    elseif w ~= nil and h == nil then
        local sw, sh = spriteSize(image)
        _sprite(image, x, y, w, (sh / sw) * w)
    elseif w == nil and h == nil then
        _sprite(image, x, y)
    else
        _sprite(image, x, y, w, h)
    end
end

But anyway, it should moved to low-level (framework api). :slight_smile:
It’s not a most important feature. But nice to have. In current version it works only when height is not set.