e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
146 lines
2.6 KiB
C++
146 lines
2.6 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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/** \file
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* \ingroup freestyle
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* \brief A class to hold a bounding box
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*/
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#include <algorithm>
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#include <stdlib.h>
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#include "BLI_utildefines.h"
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#ifdef WITH_CXX_GUARDEDALLOC
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# include "MEM_guardedalloc.h"
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#endif
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namespace Freestyle {
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template<class Point> class BBox {
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public:
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inline BBox()
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{
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_empty = true;
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}
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template<class T> inline BBox(const T &min_in, const T &max_in) : _min(min_in), _max(max_in)
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{
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_empty = false;
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}
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template<class T> inline BBox(const BBox<T> &b) : _min(b.getMin()), _max(b.getMax())
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{
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_empty = false;
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}
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template<class T> inline void extendToContain(const T &p)
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{
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if (_empty) {
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_min = p;
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_max = p;
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_empty = false;
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return;
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}
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for (uint i = 0; i < Point::dim(); i++) {
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if (p[i] < _min[i]) {
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_min[i] = p[i];
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}
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else if (p[i] > _max[i]) {
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_max[i] = p[i];
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}
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}
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_empty = false;
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}
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inline void clear()
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{
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_empty = true;
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}
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inline bool empty() const
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{
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return _empty;
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}
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inline const Point &getMin() const
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{
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return _min;
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}
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inline const Point &getMax() const
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{
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return _max;
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}
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inline BBox<Point> &operator=(const BBox<Point> &b)
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{
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BLI_assert(!b.empty());
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_min = b.getMin();
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_max = b.getMax();
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_empty = false;
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return *this;
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}
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inline BBox<Point> &operator+=(const BBox<Point> &b)
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{
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BLI_assert(!b.empty());
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if (_empty) {
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_min = b.getMin();
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_max = b.getMax();
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_empty = false;
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}
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else {
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for (uint i = 0; i < Point::dim(); i++) {
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if (b.getMin()[i] < _min[i]) {
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_min[i] = b.getMin()[i];
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}
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if (b.getMax()[i] > _max[i]) {
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_max[i] = b.getMax()[i];
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}
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}
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}
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return *this;
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}
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inline bool inside(const Point &p)
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{
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if (empty()) {
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return false;
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}
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for (uint i = 0; i < Point::dim(); i++) {
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if ((_min[i] > p[i]) || (_max[i] < p[i])) {
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return false;
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}
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}
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return true;
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}
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private:
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Point _min;
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Point _max;
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bool _empty;
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#ifdef WITH_CXX_GUARDEDALLOC
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MEM_CXX_CLASS_ALLOC_FUNCS("Freestyle:BBox")
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#endif
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};
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template<class Point> BBox<Point> &operator+(const BBox<Point> &b1, const BBox<Point> &b2)
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{
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Point new_min;
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Point new_max;
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for (uint i = 0; i < Point::dim(); i++) {
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new_min[i] = b1.getMin()[i] < b2.getMin()[i] ? b1.getMin()[i] : b2.getMin()[i];
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new_max[i] = b1.getMax()[i] > b2.getMax()[i] ? b1.getMax()[i] : b2.getMax()[i];
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}
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return BBox<Point>(new_min, new_max);
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}
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} /* namespace Freestyle */
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