縮放旋轉的矩形以適合邊框

Question

因此，我具有適用於非旋轉矩形的調整大小功能，但我也需要使其適用於旋轉矩形。.所以我的想法是調整旋轉矩形的邊界框的大小，然后將旋轉矩形放入內部。我無法弄清楚..這是我擁有的變量：

cW = currentRotatedRectangleWidth
cH = currentRotatedRectangleHeight
rad = angleOfRotation
cBW = currentRotatedRectangleBoundingWidth
cBW = Math.abs(cH * Math.sin(rad)) + Math.abs(cW * Math.cos(rad))
cBH = currentRotatedRectangleBoundingHeight
cBH = Math.abs(cH * Math.sin(rad)) + Math.abs(cW * Math.cos(rad))
nBW = newBoundingWidth
nBH = newBoundingHeight
dx = differenceWidth = (cBW - cW) / 2
dy = differenceHeight = (cBH - cH) / 2

所以我需要將旋轉的矩形放入尺寸為nBW * nBH的邊界框中

Answer 1

我認為nBW / nBH比可能與理想值不同。 因此，您必須從“垂直/水平”系數中選擇最小值以正確適合旋轉的矩形。

 CoeffH = nbW / cBW
 CoeffV = nbH / cBH
 Coeff = Min(CoeffH, CoeffV)

現在將線性大小乘以Coeff。