httpImage.txt

--@name httpImage
--@author Sparky
--@shared

-- Place on a screen to show a centered image of your url

--local url = "https://dl.dropboxusercontent.com/s/sot5ft7yjls0wna/blaziken3.png"
--local url = "https://dl.dropboxusercontent.com/s/xf6iagp8p3ri1wf/blaziken4.png"
--local url = "https://dl.dropboxusercontent.com/s/zrznbi3u2bwq5u4/birb2.png"
local url = "https://dl.dropboxusercontent.com/s/dxmm59u9e5tnfix/blaziken2.png"

if SERVER then
    local e = chip():isWeldedTo()
    if isValid(e) then
        e:linkComponent(chip())
    end
else

    local centeredImage = class("centeredImage")
    
    function centeredImage:initialize(url)
        self.dx, self.dy, self.dw, self.dy = 0, 0, 0, 0
        self.mat = material.create("UnlitGeneric")
        self:loadImage(url)
    end
    
    function centeredImage:loadImage(url)
        self.mat:setTextureURL("$basetexture", url, function(_,_,w,h,resize)
            if w then
                self:layout(w,h,resize)
            else
                self:loadImage(url)
            end
        end)
    end
    
    function centeredImage:layout(w,h,resize)
        if w>h then
            h = h*1024/w
            w = 1024
        else
            w = w*1024/h
            h = 1024
        end
        self.imw = w*0.5
        self.imh = h*0.5
        self.aspect = self.imw/self.imh
        resize(0, 0, w, h)
        self.loaded = true
    end
    
    function centeredImage:draw()
        if not self.loaded then return end
    
        local scrw, scrh = render.getResolution()
        local scale, size
        if scrw/scrh>self.aspect then
            scale = scrh/self.imh
            size = scrh*scale
        else
            scale = scrw/self.imw
            size = scrw*scale
        end

        render.setBackgroundColor(Color(69,75,72,255))
        render.setColor(Color(255, 255, 255))
        render.setMaterial(self.mat)
        render.drawTexturedRect(scrw*0.5-self.imw*0.5*scale, scrh*0.5-self.imh*0.5*scale, size, size)
    end

    local myimage = centeredImage:new(url)
    hook.add("render", "", function()
        myimage:draw()
    end)
end