| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "cobalt/math/box_f.h" |
| |
| #include <algorithm> |
| |
| #include "base/logging.h" |
| #include "base/stringprintf.h" |
| |
| namespace cobalt { |
| namespace math { |
| |
| std::string BoxF::ToString() const { |
| return base::StringPrintf("%s %fx%fx%f", origin().ToString().c_str(), width_, |
| height_, depth_); |
| } |
| |
| bool BoxF::IsEmpty() const { |
| return (width_ == 0 && height_ == 0) || (width_ == 0 && depth_ == 0) || |
| (height_ == 0 && depth_ == 0); |
| } |
| |
| void BoxF::ExpandTo(const Point3F& min, const Point3F& max) { |
| DCHECK_LE(min.x(), max.x()); |
| DCHECK_LE(min.y(), max.y()); |
| DCHECK_LE(min.z(), max.z()); |
| |
| float min_x = std::min(x(), min.x()); |
| float min_y = std::min(y(), min.y()); |
| float min_z = std::min(z(), min.z()); |
| float max_x = std::max(right(), max.x()); |
| float max_y = std::max(bottom(), max.y()); |
| float max_z = std::max(front(), max.z()); |
| |
| origin_.SetPoint(min_x, min_y, min_z); |
| width_ = max_x - min_x; |
| height_ = max_y - min_y; |
| depth_ = max_z - min_z; |
| } |
| |
| void BoxF::Union(const BoxF& box) { |
| if (IsEmpty()) { |
| *this = box; |
| return; |
| } |
| if (box.IsEmpty()) return; |
| ExpandTo(box); |
| } |
| |
| void BoxF::ExpandTo(const Point3F& point) { ExpandTo(point, point); } |
| |
| void BoxF::ExpandTo(const BoxF& box) { |
| ExpandTo(box.origin(), Point3F(box.right(), box.bottom(), box.front())); |
| } |
| |
| BoxF UnionBoxes(const BoxF& a, const BoxF& b) { |
| BoxF result = a; |
| result.Union(b); |
| return result; |
| } |
| |
| } // namespace math |
| } // namespace cobalt |