Function RectApplyAffineTransform

core/math/AffineTransform.cpp:80–98

const AffineTransform AffineTransform::IDENTITY      = AffineTransformMakeIdentity();

Rect RectApplyAffineTransform(const Rect& rect, const AffineTransform& anAffineTransform)
{
    float top    = rect.getMinY();
    float left   = rect.getMinX();
    float right  = rect.getMaxX();
    float bottom = rect.getMaxY();

    Vec2 topLeft     = PointApplyAffineTransform(Vec2(left, top), anAffineTransform);
    Vec2 topRight    = PointApplyAffineTransform(Vec2(right, top), anAffineTransform);
    Vec2 bottomLeft  = PointApplyAffineTransform(Vec2(left, bottom), anAffineTransform);
    Vec2 bottomRight = PointApplyAffineTransform(Vec2(right, bottom), anAffineTransform);

    float minX = min(min(topLeft.x, topRight.x), min(bottomLeft.x, bottomRight.x));
    float maxX = max(max(topLeft.x, topRight.x), max(bottomLeft.x, bottomRight.x));
    float minY = min(min(topLeft.y, topRight.y), min(bottomLeft.y, bottomRight.y));
    float maxY = max(max(topLeft.y, topRight.y), max(bottomLeft.y, bottomRight.y));

    return Rect(minX, minY, (maxX - minX), (maxY - minY));
}

Rect RectApplyTransform(const Rect& rect, const Mat4& transform)
{