ui/gfx/box_f.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/gfx/box_f.h"
   6
   7 #include "base/strings/stringprintf.h"
   8
   9 namespace gfx {
  10
  11 std::string BoxF::ToString() const {
  12   return base::StringPrintf("%s %fx%fx%f",
  13                             origin().ToString().c_str(),
  14                             width_,
  15                             height_,
  16                             depth_);
  17 }
  18
  19 bool BoxF::IsEmpty() const {
  20   return (width_ == 0 && height_ == 0) ||
  21          (width_ == 0 && depth_ == 0) ||
  22          (height_ == 0 && depth_ == 0);
  23 }
  24
  25 void BoxF::Union(const BoxF& box) {
  26   if (IsEmpty()) {
  27     *this = box;
  28     return;
  29   }
  30   if (box.IsEmpty())
  31     return;
  32
  33   float min_x = std::min(x(), box.x());
  34   float min_y = std::min(y(), box.y());
  35   float min_z = std::min(z(), box.z());
  36   float max_x = std::max(right(), box.right());
  37   float max_y = std::max(bottom(), box.bottom());
  38   float max_z = std::max(front(), box.front());
  39
  40   origin_.SetPoint(min_x, min_y, min_z);
  41   width_ = max_x - min_x;
  42   height_ = max_y - min_y;
  43   depth_ = max_z - min_z;
  44 }
  45
  46 BoxF UnionBoxes(const BoxF& a, const BoxF& b) {
  47   BoxF result = a;
  48   result.Union(b);
  49   return result;
  50 }
  51
  52 }  // namespace gfx