Module: PhotoCook::Resize::Calculations

Defined in:
lib/photo-cook/resize/calculations.rb

Class Method Summary collapse

Class Method Details

.round(x) ⇒ Object 



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# File 'lib/photo-cook/resize/calculations.rb', line 54

def round(x)
  PhotoCook::Pixels.round(x)
end

.size_to_fill(maxw, maxh, reqw, reqh, round = true) ⇒ Object 



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# File 'lib/photo-cook/resize/calculations.rb', line 20

def size_to_fill(maxw, maxh, reqw, reqh, round = true)
  outw, outh = reqw, reqh

  if reqw > maxw && reqh > maxh
    if maxw >= maxh
      outw = (reqw * maxh) / reqh.to_f
      outh = maxh

      if outw > maxw
        outh = (outh * maxw) / convert(outw)
        outw = maxw
      end
    else
      outw = maxw
      outh = (maxw * reqh) / reqw

      if outh > maxh
        outw = (outw * maxh) / convert(outh)
        outh = maxh
      end
    end

  elsif reqw > maxw
    outw = maxw
    outh = (reqh * maxw) / convert(reqw)

  elsif reqh > maxh
    outw = (reqw * maxh) / convert(reqh)
    outh = maxh
  end

  round ? [round(outw), round(outh)] : [outw, outh]
end

.size_to_fit(maxw, maxh, reqw, reqh, round = true) ⇒ Object 



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# File 'lib/photo-cook/resize/calculations.rb', line 8

def size_to_fit(maxw, maxh, reqw, reqh, round = true)
  outw, outh = maxw, maxh

  scale = outw > reqw ? reqw / convert(outw) : 1.0
  outw, outh = outw * scale, outh * scale

  scale = outh > reqh ? reqh / convert(outh) : 1.0
  outw, outh = outw * scale, outh * scale

  round ? [round(outw), round(outh)] : [outw, outh]
end