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remove trailing whitespace and convert to unix line endings

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Jan Niklas Hasse 2012-09-05 18:41:47 +02:00
parent b4abf3a2b2
commit 47a9c6e038
14 changed files with 1820 additions and 1827 deletions
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3
poly2tri/common/shapes.cc
View File

@ -362,5 +362,4 @@ void Triangle::DebugPrint()
cout << points_[2]->x << "," << points_[2]->y << endl;
}
}
}

4
poly2tri/common/shapes.h
View File

@ -320,6 +320,4 @@ inline void Triangle::IsInterior(bool b)
}
#endif
#endif

245
poly2tri/common/utils.h
View File

@ -1,123 +1,122 @@
/*
* Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef UTILS_H
#define UTILS_H
// Otherwise #defines like M_PI are undeclared under Visual Studio
#define _USE_MATH_DEFINES
#include <exception>
#include <math.h>
namespace p2t {
const double PI_3div4 = 3 * M_PI / 4;
const double PI_div2 = 1.57079632679489661923;
const double EPSILON = 1e-12;
enum Orientation { CW, CCW, COLLINEAR };
/**
* Forumla to calculate signed area<br>
* Positive if CCW<br>
* Negative if CW<br>
* 0 if collinear<br>
* <pre>
* A[P1,P2,P3] = (x1*y2 - y1*x2) + (x2*y3 - y2*x3) + (x3*y1 - y3*x1)
* = (x1-x3)*(y2-y3) - (y1-y3)*(x2-x3)
* </pre>
*/
Orientation Orient2d(Point& pa, Point& pb, Point& pc)
{
double detleft = (pa.x - pc.x) * (pb.y - pc.y);
double detright = (pa.y - pc.y) * (pb.x - pc.x);
double val = detleft - detright;
if (val > -EPSILON && val < EPSILON) {
return COLLINEAR;
} else if (val > 0) {
return CCW;
}
return CW;
}
/*
bool InScanArea(Point& pa, Point& pb, Point& pc, Point& pd)
{
double pdx = pd.x;
double pdy = pd.y;
double adx = pa.x - pdx;
double ady = pa.y - pdy;
double bdx = pb.x - pdx;
double bdy = pb.y - pdy;
double adxbdy = adx * bdy;
double bdxady = bdx * ady;
double oabd = adxbdy - bdxady;
if (oabd <= EPSILON) {
return false;
}
double cdx = pc.x - pdx;
double cdy = pc.y - pdy;
double cdxady = cdx * ady;
double adxcdy = adx * cdy;
double ocad = cdxady - adxcdy;
if (ocad <= EPSILON) {
return false;
}
return true;
}
*/
bool InScanArea(Point& pa, Point& pb, Point& pc, Point& pd)
{
double oadb = (pa.x - pb.x)*(pd.y - pb.y) - (pd.x - pb.x)*(pa.y - pb.y);
if (oadb >= -EPSILON) {
return false;
}
double oadc = (pa.x - pc.x)*(pd.y - pc.y) - (pd.x - pc.x)*(pa.y - pc.y);
if (oadc <= EPSILON) {
return false;
}
return true;
}
}
#endif
/*
* Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef UTILS_H
#define UTILS_H
// Otherwise #defines like M_PI are undeclared under Visual Studio
#define _USE_MATH_DEFINES
#include <exception>
#include <math.h>
namespace p2t {
const double PI_3div4 = 3 * M_PI / 4;
const double PI_div2 = 1.57079632679489661923;
const double EPSILON = 1e-12;
enum Orientation { CW, CCW, COLLINEAR };
/**
* Forumla to calculate signed area<br>
* Positive if CCW<br>
* Negative if CW<br>
* 0 if collinear<br>
* <pre>
* A[P1,P2,P3] = (x1*y2 - y1*x2) + (x2*y3 - y2*x3) + (x3*y1 - y3*x1)
* = (x1-x3)*(y2-y3) - (y1-y3)*(x2-x3)
* </pre>
*/
Orientation Orient2d(Point& pa, Point& pb, Point& pc)
{
double detleft = (pa.x - pc.x) * (pb.y - pc.y);
double detright = (pa.y - pc.y) * (pb.x - pc.x);
double val = detleft - detright;
if (val > -EPSILON && val < EPSILON) {
return COLLINEAR;
} else if (val > 0) {
return CCW;
}
return CW;
}
/*
bool InScanArea(Point& pa, Point& pb, Point& pc, Point& pd)
{
double pdx = pd.x;
double pdy = pd.y;
double adx = pa.x - pdx;
double ady = pa.y - pdy;
double bdx = pb.x - pdx;
double bdy = pb.y - pdy;
double adxbdy = adx * bdy;
double bdxady = bdx * ady;
double oabd = adxbdy - bdxady;
if (oabd <= EPSILON) {
return false;
}
double cdx = pc.x - pdx;
double cdy = pc.y - pdy;
double cdxady = cdx * ady;
double adxcdy = adx * cdy;
double ocad = cdxady - adxcdy;
if (ocad <= EPSILON) {
return false;
}
return true;
}
*/
bool InScanArea(Point& pa, Point& pb, Point& pc, Point& pd)
{
double oadb = (pa.x - pb.x)*(pd.y - pb.y) - (pd.x - pb.x)*(pa.y - pb.y);
if (oadb >= -EPSILON) {
return false;
}
double oadc = (pa.x - pc.x)*(pd.y - pc.y) - (pd.x - pc.x)*(pa.y - pc.y);
if (oadc <= EPSILON) {
return false;
}
return true;
}
}
#endif

5
poly2tri/poly2tri.h
View File

@ -1,4 +1,4 @@
/*
/*
* Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
@ -35,5 +35,4 @@
#include "common/shapes.h"
#include "sweep/cdt.h"
#endif
#endif

3
poly2tri/sweep/advancing_front.cc
View File

@ -105,5 +105,4 @@ AdvancingFront::~AdvancingFront()
{
}
}
}

2
poly2tri/sweep/advancing_front.h
View File

@ -115,4 +115,4 @@ inline void AdvancingFront::set_search(Node* node)
}
#endif
#endif

143
poly2tri/sweep/cdt.cc
View File

@ -1,72 +1,71 @@
/*
* Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "cdt.h"
namespace p2t {
CDT::CDT(std::vector<Point*> polyline)
{
sweep_context_ = new SweepContext(polyline);
sweep_ = new Sweep;
}
void CDT::AddHole(std::vector<Point*> polyline)
{
sweep_context_->AddHole(polyline);
}
void CDT::AddPoint(Point* point) {
sweep_context_->AddPoint(point);
}
void CDT::Triangulate()
{
sweep_->Triangulate(*sweep_context_);
}
std::vector<p2t::Triangle*> CDT::GetTriangles()
{
return sweep_context_->GetTriangles();
}
std::list<p2t::Triangle*> CDT::GetMap()
{
return sweep_context_->GetMap();
}
CDT::~CDT()
{
delete sweep_context_;
delete sweep_;
}
}
/*
* Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "cdt.h"
namespace p2t {
CDT::CDT(std::vector<Point*> polyline)
{
sweep_context_ = new SweepContext(polyline);
sweep_ = new Sweep;
}
void CDT::AddHole(std::vector<Point*> polyline)
{
sweep_context_->AddHole(polyline);
}
void CDT::AddPoint(Point* point) {
sweep_context_->AddPoint(point);
}
void CDT::Triangulate()
{
sweep_->Triangulate(*sweep_context_);
}
std::vector<p2t::Triangle*> CDT::GetTriangles()
{
return sweep_context_->GetTriangles();
}
std::list<p2t::Triangle*> CDT::GetMap()
{
return sweep_context_->GetMap();
}
CDT::~CDT()
{
delete sweep_context_;
delete sweep_;
}
}

210
poly2tri/sweep/cdt.h
View File

@ -1,105 +1,105 @@
/*
* Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CDT_H
#define CDT_H
#include "advancing_front.h"
#include "sweep_context.h"
#include "sweep.h"
/**
*
* @author Mason Green <mason.green@gmail.com>
*
*/
namespace p2t {
class CDT
{
public:
/**
* Constructor - add polyline with non repeating points
*
* @param polyline
*/
CDT(std::vector<Point*> polyline);
/**
* Destructor - clean up memory
*/
~CDT();
/**
* Add a hole
*
* @param polyline
*/
void AddHole(std::vector<Point*> polyline);
/**
* Add a steiner point
*
* @param point
*/
void AddPoint(Point* point);
/**
* Triangulate - do this AFTER you've added the polyline, holes, and Steiner points
*/
void Triangulate();
/**
* Get CDT triangles
*/
std::vector<Triangle*> GetTriangles();
/**
* Get triangle map
*/
std::list<Triangle*> GetMap();
private:
/**
* Internals
*/
SweepContext* sweep_context_;
Sweep* sweep_;
};
}
#endif
/*
* Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CDT_H
#define CDT_H
#include "advancing_front.h"
#include "sweep_context.h"
#include "sweep.h"
/**
*
* @author Mason Green <mason.green@gmail.com>
*
*/
namespace p2t {
class CDT
{
public:
/**
* Constructor - add polyline with non repeating points
*
* @param polyline
*/
CDT(std::vector<Point*> polyline);
/**
* Destructor - clean up memory
*/
~CDT();
/**
* Add a hole
*
* @param polyline
*/
void AddHole(std::vector<Point*> polyline);
/**
* Add a steiner point
*
* @param point
*/
void AddPoint(Point* point);
/**
* Triangulate - do this AFTER you've added the polyline, holes, and Steiner points
*/
void Triangulate();
/**
* Get CDT triangles
*/
std::vector<Triangle*> GetTriangles();
/**
* Get triangle map
*/
std::list<Triangle*> GetMap();
private:
/**
* Internals
*/
SweepContext* sweep_context_;
Sweep* sweep_;
};
}
#endif

1600
poly2tri/sweep/sweep.cc
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File diff suppressed because it is too large Load Diff

38
poly2tri/sweep/sweep.h
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@ -33,7 +33,7 @@
* Zalik, B.(2008)'Sweep-line algorithm for constrained Delaunay triangulation',
* International Journal of Geographical Information Science
*
* "FlipScan" Constrained Edge Algorithm invented by Thomas Åhlén, thahlen@gmail.com
* "FlipScan" Constrained Edge Algorithm invented by Thomas ?hl?n, thahlen@gmail.com
*/
#ifndef SWEEP_H
@ -49,17 +49,17 @@ struct Point;
struct Edge;
class Triangle;
class Sweep
class Sweep
{
public:
/**
* Triangulate
*
*
* @param tcx
*/
void Triangulate(SweepContext& tcx);
/**
* Destructor - clean up memory
*/
@ -69,7 +69,7 @@ private:
/**
* Start sweeping the Y-sorted point set from bottom to top
*
*
* @param tcx
*/
void SweepPoints(SweepContext& tcx);
@ -86,8 +86,8 @@ private:
Node& PointEvent(SweepContext& tcx, Point& point);
/**
*
*
*
*
* @param tcx
* @param edge
* @param node
@ -98,7 +98,7 @@ private:
/**
* Creates a new front triangle and legalize it
*
*
* @param tcx
* @param point
* @param node
@ -168,8 +168,8 @@ private:
* @param n
*/
void FillAdvancingFront(SweepContext& tcx, Node& n);
// Decision-making about when to Fill hole.
// Decision-making about when to Fill hole.
// Contributed by ToolmakerSteve2
bool LargeHole_DontFill(Node* node);
bool AngleExceeds90Degrees(Point* origin, Point* pa, Point* pb);
@ -235,22 +235,22 @@ private:
/**
* After a flip we have two triangles and know that only one will still be
* intersecting the edge. So decide which to contiune with and legalize the other
*
*
* @param tcx
* @param o - should be the result of an orient2d( eq, op, ep )
* @param t - triangle 1
* @param ot - triangle 2
* @param p - a point shared by both triangles
* @param p - a point shared by both triangles
* @param op - another point shared by both triangles
* @return returns the triangle still intersecting the edge
*/
Triangle& NextFlipTriangle(SweepContext& tcx, int o, Triangle& t, Triangle& ot, Point& p, Point& op);
/**
* When we need to traverse from one triangle to the next we need
* When we need to traverse from one triangle to the next we need
* the point in current triangle that is the opposite point to the next
* triangle.
*
* triangle.
*
* @param ep
* @param eq
* @param ot
@ -261,10 +261,10 @@ private:
/**
* Scan part of the FlipScan algorithm<br>
* When a triangle pair isn't flippable we will scan for the next
* point that is inside the flip triangle scan area. When found
* When a triangle pair isn't flippable we will scan for the next
* point that is inside the flip triangle scan area. When found
* we generate a new flipEdgeEvent
*
*
* @param tcx
* @param ep - last point on the edge we are traversing
* @param eq - first point on the edge we are traversing
@ -282,4 +282,4 @@ private:
}
#endif
#endif

2
poly2tri/sweep/sweep_context.cc
View File

@ -194,4 +194,4 @@ SweepContext::~SweepContext()
}
}
}

372
poly2tri/sweep/sweep_context.h
View File

@ -1,186 +1,186 @@
/*
* Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SWEEP_CONTEXT_H
#define SWEEP_CONTEXT_H
#include <list>
#include <vector>
#include <cstddef>
namespace p2t {
// Inital triangle factor, seed triangle will extend 30% of
// PointSet width to both left and right.
const double kAlpha = 0.3;
struct Point;
class Triangle;
struct Node;
struct Edge;
class AdvancingFront;
class SweepContext {
public:
/// Constructor
SweepContext(std::vector<Point*> polyline);
/// Destructor
~SweepContext();
void set_head(Point* p1);
Point* head();
void set_tail(Point* p1);
Point* tail();
size_t point_count();
Node& LocateNode(Point& point);
void RemoveNode(Node* node);
void CreateAdvancingFront(std::vector<Node*> nodes);
/// Try to map a node to all sides of this triangle that don't have a neighbor
void MapTriangleToNodes(Triangle& t);
void AddToMap(Triangle* triangle);
Point* GetPoint(size_t index);
Point* GetPoints();
void RemoveFromMap(Triangle* triangle);
void AddHole(std::vector<Point*> polyline);
void AddPoint(Point* point);
AdvancingFront* front();
void MeshClean(Triangle& triangle);
std::vector<Triangle*> GetTriangles();
std::list<Triangle*> GetMap();
std::vector<Edge*> edge_list;
struct Basin {
Node* left_node;
Node* bottom_node;
Node* right_node;
double width;
bool left_highest;
Basin() : left_node(NULL), bottom_node(NULL), right_node(NULL), width(0.0), left_highest(false)
{
}
void Clear()
{
left_node = NULL;
bottom_node = NULL;
right_node = NULL;
width = 0.0;
left_highest = false;
}
};
struct EdgeEvent {
Edge* constrained_edge;
bool right;
EdgeEvent() : constrained_edge(NULL), right(false)
{
}
};
Basin basin;
EdgeEvent edge_event;
private:
friend class Sweep;
std::vector<Triangle*> triangles_;
std::list<Triangle*> map_;
std::vector<Point*> points_;
// Advancing front
AdvancingFront* front_;
// head point used with advancing front
Point* head_;
// tail point used with advancing front
Point* tail_;
Node *af_head_, *af_middle_, *af_tail_;
void InitTriangulation();
void InitEdges(std::vector<Point*> polyline);
};
inline AdvancingFront* SweepContext::front()
{
return front_;
}
inline size_t SweepContext::point_count()
{
return points_.size();
}
inline void SweepContext::set_head(Point* p1)
{
head_ = p1;
}
inline Point* SweepContext::head()
{
return head_;
}
inline void SweepContext::set_tail(Point* p1)
{
tail_ = p1;
}
inline Point* SweepContext::tail()
{
return tail_;
}
}
#endif
/*
* Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SWEEP_CONTEXT_H
#define SWEEP_CONTEXT_H
#include <list>
#include <vector>
#include <cstddef>
namespace p2t {
// Inital triangle factor, seed triangle will extend 30% of
// PointSet width to both left and right.
const double kAlpha = 0.3;
struct Point;
class Triangle;
struct Node;
struct Edge;
class AdvancingFront;
class SweepContext {
public:
/// Constructor
SweepContext(std::vector<Point*> polyline);
/// Destructor
~SweepContext();
void set_head(Point* p1);
Point* head();
void set_tail(Point* p1);
Point* tail();
size_t point_count();
Node& LocateNode(Point& point);
void RemoveNode(Node* node);
void CreateAdvancingFront(std::vector<Node*> nodes);
/// Try to map a node to all sides of this triangle that don't have a neighbor
void MapTriangleToNodes(Triangle& t);
void AddToMap(Triangle* triangle);
Point* GetPoint(size_t index);
Point* GetPoints();
void RemoveFromMap(Triangle* triangle);
void AddHole(std::vector<Point*> polyline);
void AddPoint(Point* point);
AdvancingFront* front();
void MeshClean(Triangle& triangle);
std::vector<Triangle*> GetTriangles();
std::list<Triangle*> GetMap();
std::vector<Edge*> edge_list;
struct Basin {
Node* left_node;
Node* bottom_node;
Node* right_node;
double width;
bool left_highest;
Basin() : left_node(NULL), bottom_node(NULL), right_node(NULL), width(0.0), left_highest(false)
{
}
void Clear()
{
left_node = NULL;
bottom_node = NULL;
right_node = NULL;
width = 0.0;
left_highest = false;
}
};
struct EdgeEvent {
Edge* constrained_edge;
bool right;
EdgeEvent() : constrained_edge(NULL), right(false)
{
}
};
Basin basin;
EdgeEvent edge_event;
private:
friend class Sweep;
std::vector<Triangle*> triangles_;
std::list<Triangle*> map_;
std::vector<Point*> points_;
// Advancing front
AdvancingFront* front_;
// head point used with advancing front
Point* head_;
// tail point used with advancing front
Point* tail_;
Node *af_head_, *af_middle_, *af_tail_;
void InitTriangulation();
void InitEdges(std::vector<Point*> polyline);
};
inline AdvancingFront* SweepContext::front()
{
return front_;
}
inline size_t SweepContext::point_count()
{
return points_.size();
}
inline void SweepContext::set_head(Point* p1)
{
head_ = p1;
}
inline Point* SweepContext::head()
{
return head_;
}
inline void SweepContext::set_tail(Point* p1)
{
tail_ = p1;
}
inline Point* SweepContext::tail()
{
return tail_;
}
}
#endif

926
testbed/main.cc
View File

@ -1,463 +1,463 @@
/*
* Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <cstdlib>
#include <GL/glfw.h>
#include <time.h>
#include <fstream>
#include <string>
#include <sstream>
#include <algorithm>
#include <iterator>
#include <iostream>
using namespace std;
#include "../poly2tri/poly2tri.h"
using namespace p2t;
void Init();
void ShutDown(int return_code);
void MainLoop(const double zoom);
void Draw(const double zoom);
void DrawMap(const double zoom);
void ConstrainedColor(bool constrain);
double StringToDouble(const std::string& s);
double Random(double (*fun)(double), double xmin, double xmax);
double Fun(double x);
/// Dude hole examples
vector<Point*> CreateHeadHole();
vector<Point*> CreateChestHole();
float rotate_y = 0,
rotate_z = 0;
const float rotations_per_tick = .2;
/// Screen center x
double cx = 0.0;
/// Screen center y
double cy = 0.0;
/// Constrained triangles
vector<Triangle*> triangles;
/// Triangle map
list<Triangle*> map;
/// Polylines
vector< vector<Point*> > polylines;
/// Draw the entire triangle map?
bool draw_map = false;
/// Create a random distribution of points?
bool random_distribution = false;
template <class C> void FreeClear( C & cntr ) {
for ( typename C::iterator it = cntr.begin();
it != cntr.end(); ++it ) {
delete * it;
}
cntr.clear();
}
int main(int argc, char* argv[])
{
int num_points = 0;
double max, min;
double zoom;
if (argc != 5) {
cout << "-== USAGE ==-" << endl;
cout << "Load Data File: p2t filename center_x center_y zoom" << endl;
cout << "Example: ./build/p2t testbed/data/dude.dat 500 500 1" << endl;
return 1;
}
if(string(argv[1]) == "random") {
num_points = atoi(argv[2]);
random_distribution = true;
char* pEnd;
max = strtod(argv[3], &pEnd);
min = -max;
cx = cy = 0;
zoom = atof(argv[4]);
} else {
zoom = atof(argv[4]);
cx = atof(argv[2]);
cy = atof(argv[3]);
}
vector<p2t::Point*> polyline;
if(random_distribution) {
// Create a simple bounding box
polyline.push_back(new Point(min,min));
polyline.push_back(new Point(min,max));
polyline.push_back(new Point(max,max));
polyline.push_back(new Point(max,min));
} else {
// Load pointset from file
// Parse and tokenize data file
string line;
ifstream myfile(argv[1]);
if (myfile.is_open()) {
while (!myfile.eof()) {
getline(myfile, line);
if (line.size() == 0) {
break;
}
istringstream iss(line);
vector<string> tokens;
copy(istream_iterator<string>(iss), istream_iterator<string>(),
back_inserter<vector<string> >(tokens));
double x = StringToDouble(tokens[0]);
double y = StringToDouble(tokens[1]);
polyline.push_back(new Point(x, y));
num_points++;
}
myfile.close();
} else {
cout << "File not opened" << endl;
}
}
cout << "Number of constrained edges = " << polyline.size() << endl;
polylines.push_back(polyline);
Init();
/*
* Perform triangulation!
*/
double init_time = glfwGetTime();
/*
* STEP 1: Create CDT and add primary polyline
* NOTE: polyline must be a simple polygon. The polyline's points
* constitute constrained edges. No repeat points!!!
*/
CDT* cdt = new CDT(polyline);
/*
* STEP 2: Add holes or Steiner points if necessary
*/
string s(argv[1]);
if(s.find("dude.dat", 0) != string::npos) {
// Add head hole
vector<Point*> head_hole = CreateHeadHole();
num_points += head_hole.size();
cdt->AddHole(head_hole);
// Add chest hole
vector<Point*> chest_hole = CreateChestHole();
num_points += chest_hole.size();
cdt->AddHole(chest_hole);
polylines.push_back(head_hole);
polylines.push_back(chest_hole);
} else if (random_distribution) {
max-=(1e-4);
min+=(1e-4);
for(int i = 0; i < num_points; i++) {
double x = Random(Fun, min, max);
double y = Random(Fun, min, max);
cdt->AddPoint(new Point(x, y));
}
}
/*
* STEP 3: Triangulate!
*/
cdt->Triangulate();
double dt = glfwGetTime() - init_time;
triangles = cdt->GetTriangles();
map = cdt->GetMap();
cout << "Number of points = " << num_points << endl;
cout << "Number of triangles = " << triangles.size() << endl;
cout << "Elapsed time (ms) = " << dt*1000.0 << endl;
MainLoop(zoom);
// Cleanup
delete cdt;
// Free points
for(int i = 0; i < polylines.size(); i++) {
vector<Point*> poly = polylines[i];
FreeClear(poly);
}
ShutDown(0);
return 0;
}
void Init()
{
const int window_width = 800,
window_height = 600;
if (glfwInit() != GL_TRUE)
ShutDown(1);
// 800 x 600, 16 bit color, no depth, alpha or stencil buffers, windowed
if (glfwOpenWindow(window_width, window_height, 5, 6, 5, 0, 0, 0, GLFW_WINDOW) != GL_TRUE)
ShutDown(1);
glfwSetWindowTitle("Poly2Tri - C++");
glfwSwapInterval(1);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glClearColor(0.0, 0.0, 0.0, 0.0);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
}
void ShutDown(int return_code)
{
glfwTerminate();
exit(return_code);
}
void MainLoop(const double zoom)
{
// the time of the previous frame
double old_time = glfwGetTime();
// this just loops as long as the program runs
bool running = true;
while (running) {
// calculate time elapsed, and the amount by which stuff rotates
double current_time = glfwGetTime(),
delta_rotate = (current_time - old_time) * rotations_per_tick * 360;
old_time = current_time;
// escape to quit, arrow keys to rotate view
// Check if ESC key was pressed or window was closed
running = !glfwGetKey(GLFW_KEY_ESC) && glfwGetWindowParam(GLFW_OPENED);
if (glfwGetKey(GLFW_KEY_LEFT) == GLFW_PRESS)
rotate_y += delta_rotate;
if (glfwGetKey(GLFW_KEY_RIGHT) == GLFW_PRESS)
rotate_y -= delta_rotate;
// z axis always rotates
rotate_z += delta_rotate;
// Draw the scene
if (draw_map) {
DrawMap(zoom);
} else {
Draw(zoom);
}
// swap back and front buffers
glfwSwapBuffers();
}
}
void ResetZoom(double zoom, double cx, double cy, double width, double height)
{
double left = -width / zoom;
double right = width / zoom;
double bottom = -height / zoom;
double top = height / zoom;
// Reset viewport
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
// Reset ortho view
glOrtho(left, right, bottom, top, 1, -1);
glTranslatef(-cx, -cy, 0);
glMatrixMode(GL_MODELVIEW);
glDisable(GL_DEPTH_TEST);
glLoadIdentity();
// Clear the screen
glClear(GL_COLOR_BUFFER_BIT);
}
void Draw(const double zoom)
{
// reset zoom
Point center = Point(cx, cy);
ResetZoom(zoom, center.x, center.y, 800, 600);
for (int i = 0; i < triangles.size(); i++) {
Triangle& t = *triangles[i];
Point& a = *t.GetPoint(0);
Point& b = *t.GetPoint(1);
Point& c = *t.GetPoint(2);
// Red
glColor3f(1, 0, 0);
glBegin(GL_LINE_LOOP);
glVertex2f(a.x, a.y);
glVertex2f(b.x, b.y);
glVertex2f(c.x, c.y);
glEnd();
}
// green
glColor3f(0, 1, 0);
for(int i = 0; i < polylines.size(); i++) {
vector<Point*> poly = polylines[i];
glBegin(GL_LINE_LOOP);
for(int j = 0; j < poly.size(); j++) {
glVertex2f(poly[j]->x, poly[j]->y);
}
glEnd();
}
}
void DrawMap(const double zoom)
{
// reset zoom
Point center = Point(cx, cy);
ResetZoom(zoom, center.x, center.y, 800, 600);
list<Triangle*>::iterator it;
for (it = map.begin(); it != map.end(); it++) {
Triangle& t = **it;
Point& a = *t.GetPoint(0);
Point& b = *t.GetPoint(1);
Point& c = *t.GetPoint(2);
ConstrainedColor(t.constrained_edge[2]);
glBegin(GL_LINES);
glVertex2f(a.x, a.y);
glVertex2f(b.x, b.y);
glEnd( );
ConstrainedColor(t.constrained_edge[0]);
glBegin(GL_LINES);
glVertex2f(b.x, b.y);
glVertex2f(c.x, c.y);
glEnd( );
ConstrainedColor(t.constrained_edge[1]);
glBegin(GL_LINES);
glVertex2f(c.x, c.y);
glVertex2f(a.x, a.y);
glEnd( );
}
}
void ConstrainedColor(bool constrain)
{
if (constrain) {
// Green
glColor3f(0, 1, 0);
} else {
// Red
glColor3f(1, 0, 0);
}
}
vector<Point*> CreateHeadHole() {
vector<Point*> head_hole;
head_hole.push_back(new Point(325, 437));
head_hole.push_back(new Point(320, 423));
head_hole.push_back(new Point(329, 413));
head_hole.push_back(new Point(332, 423));
return head_hole;
}
vector<Point*> CreateChestHole() {
vector<Point*> chest_hole;
chest_hole.push_back(new Point(320.72342,480));
chest_hole.push_back(new Point(338.90617,465.96863));
chest_hole.push_back(new Point(347.99754,480.61584));
chest_hole.push_back(new Point(329.8148,510.41534));
chest_hole.push_back(new Point(339.91632,480.11077));
chest_hole.push_back(new Point(334.86556,478.09046));
return chest_hole;
}
double StringToDouble(const std::string& s)
{
std::istringstream i(s);
double x;
if (!(i >> x))
return 0;
return x;
}
double Fun(double x)
{
return 2.5 + sin(10 * x) / x;
}
double Random(double (*fun)(double), double xmin = 0, double xmax = 1)
{
static double (*Fun)(double) = NULL, YMin, YMax;
static bool First = true;
// Initialises random generator for first call
if (First)
{
First = false;
srand((unsigned) time(NULL));
}
// Evaluates maximum of function
if (fun != Fun)
{
Fun = fun;
YMin = 0, YMax = Fun(xmin);
for (int iX = 1; iX < RAND_MAX; iX++)
{
double X = xmin + (xmax - xmin) * iX / RAND_MAX;
double Y = Fun(X);
YMax = Y > YMax ? Y : YMax;
}
}
// Gets random values for X & Y
double X = xmin + (xmax - xmin) * rand() / RAND_MAX;
double Y = YMin + (YMax - YMin) * rand() / RAND_MAX;
// Returns if valid and try again if not valid
return Y < fun(X) ? X : Random(Fun, xmin, xmax);
}
/*
* Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <cstdlib>
#include <GL/glfw.h>
#include <time.h>
#include <fstream>
#include <string>
#include <sstream>
#include <algorithm>
#include <iterator>
#include <iostream>
using namespace std;
#include "../poly2tri/poly2tri.h"
using namespace p2t;
void Init();
void ShutDown(int return_code);
void MainLoop(const double zoom);
void Draw(const double zoom);
void DrawMap(const double zoom);
void ConstrainedColor(bool constrain);
double StringToDouble(const std::string& s);
double Random(double (*fun)(double), double xmin, double xmax);
double Fun(double x);
/// Dude hole examples
vector<Point*> CreateHeadHole();
vector<Point*> CreateChestHole();
float rotate_y = 0,
rotate_z = 0;
const float rotations_per_tick = .2;
/// Screen center x
double cx = 0.0;
/// Screen center y
double cy = 0.0;
/// Constrained triangles
vector<Triangle*> triangles;
/// Triangle map
list<Triangle*> map;
/// Polylines
vector< vector<Point*> > polylines;
/// Draw the entire triangle map?
bool draw_map = false;
/// Create a random distribution of points?
bool random_distribution = false;
template <class C> void FreeClear( C & cntr ) {
for ( typename C::iterator it = cntr.begin();
it != cntr.end(); ++it ) {
delete * it;
}
cntr.clear();
}
int main(int argc, char* argv[])
{
int num_points = 0;
double max, min;
double zoom;
if (argc != 5) {
cout << "-== USAGE ==-" << endl;
cout << "Load Data File: p2t filename center_x center_y zoom" << endl;
cout << "Example: ./build/p2t testbed/data/dude.dat 500 500 1" << endl;
return 1;
}
if(string(argv[1]) == "random") {
num_points = atoi(argv[2]);
random_distribution = true;
char* pEnd;
max = strtod(argv[3], &pEnd);
min = -max;
cx = cy = 0;
zoom = atof(argv[4]);
} else {
zoom = atof(argv[4]);
cx = atof(argv[2]);
cy = atof(argv[3]);
}
vector<p2t::Point*> polyline;
if(random_distribution) {
// Create a simple bounding box
polyline.push_back(new Point(min,min));
polyline.push_back(new Point(min,max));
polyline.push_back(new Point(max,max));
polyline.push_back(new Point(max,min));
} else {
// Load pointset from file
// Parse and tokenize data file
string line;
ifstream myfile(argv[1]);
if (myfile.is_open()) {
while (!myfile.eof()) {
getline(myfile, line);
if (line.size() == 0) {
break;
}
istringstream iss(line);
vector<string> tokens;
copy(istream_iterator<string>(iss), istream_iterator<string>(),
back_inserter<vector<string> >(tokens));
double x = StringToDouble(tokens[0]);
double y = StringToDouble(tokens[1]);
polyline.push_back(new Point(x, y));
num_points++;
}
myfile.close();
} else {
cout << "File not opened" << endl;
}
}
cout << "Number of constrained edges = " << polyline.size() << endl;
polylines.push_back(polyline);
Init();
/*
* Perform triangulation!
*/
double init_time = glfwGetTime();
/*
* STEP 1: Create CDT and add primary polyline
* NOTE: polyline must be a simple polygon. The polyline's points
* constitute constrained edges. No repeat points!!!
*/
CDT* cdt = new CDT(polyline);
/*
* STEP 2: Add holes or Steiner points if necessary
*/
string s(argv[1]);
if(s.find("dude.dat", 0) != string::npos) {
// Add head hole
vector<Point*> head_hole = CreateHeadHole();
num_points += head_hole.size();
cdt->AddHole(head_hole);
// Add chest hole
vector<Point*> chest_hole = CreateChestHole();
num_points += chest_hole.size();
cdt->AddHole(chest_hole);
polylines.push_back(head_hole);
polylines.push_back(chest_hole);
} else if (random_distribution) {
max-=(1e-4);
min+=(1e-4);
for(int i = 0; i < num_points; i++) {
double x = Random(Fun, min, max);
double y = Random(Fun, min, max);
cdt->AddPoint(new Point(x, y));
}
}
/*
* STEP 3: Triangulate!
*/
cdt->Triangulate();
double dt = glfwGetTime() - init_time;
triangles = cdt->GetTriangles();
map = cdt->GetMap();
cout << "Number of points = " << num_points << endl;
cout << "Number of triangles = " << triangles.size() << endl;
cout << "Elapsed time (ms) = " << dt*1000.0 << endl;
MainLoop(zoom);
// Cleanup
delete cdt;
// Free points
for(int i = 0; i < polylines.size(); i++) {
vector<Point*> poly = polylines[i];
FreeClear(poly);
}
ShutDown(0);
return 0;
}
void Init()
{
const int window_width = 800,
window_height = 600;
if (glfwInit() != GL_TRUE)
ShutDown(1);
// 800 x 600, 16 bit color, no depth, alpha or stencil buffers, windowed
if (glfwOpenWindow(window_width, window_height, 5, 6, 5, 0, 0, 0, GLFW_WINDOW) != GL_TRUE)
ShutDown(1);
glfwSetWindowTitle("Poly2Tri - C++");
glfwSwapInterval(1);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glClearColor(0.0, 0.0, 0.0, 0.0);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
}
void ShutDown(int return_code)
{
glfwTerminate();
exit(return_code);
}
void MainLoop(const double zoom)
{
// the time of the previous frame
double old_time = glfwGetTime();
// this just loops as long as the program runs
bool running = true;
while (running) {
// calculate time elapsed, and the amount by which stuff rotates
double current_time = glfwGetTime(),
delta_rotate = (current_time - old_time) * rotations_per_tick * 360;
old_time = current_time;
// escape to quit, arrow keys to rotate view
// Check if ESC key was pressed or window was closed
running = !glfwGetKey(GLFW_KEY_ESC) && glfwGetWindowParam(GLFW_OPENED);
if (glfwGetKey(GLFW_KEY_LEFT) == GLFW_PRESS)
rotate_y += delta_rotate;
if (glfwGetKey(GLFW_KEY_RIGHT) == GLFW_PRESS)
rotate_y -= delta_rotate;
// z axis always rotates
rotate_z += delta_rotate;
// Draw the scene
if (draw_map) {
DrawMap(zoom);
} else {
Draw(zoom);
}
// swap back and front buffers
glfwSwapBuffers();
}
}
void ResetZoom(double zoom, double cx, double cy, double width, double height)
{
double left = -width / zoom;
double right = width / zoom;
double bottom = -height / zoom;
double top = height / zoom;
// Reset viewport
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
// Reset ortho view
glOrtho(left, right, bottom, top, 1, -1);
glTranslatef(-cx, -cy, 0);
glMatrixMode(GL_MODELVIEW);
glDisable(GL_DEPTH_TEST);
glLoadIdentity();
// Clear the screen
glClear(GL_COLOR_BUFFER_BIT);
}
void Draw(const double zoom)
{
// reset zoom
Point center = Point(cx, cy);
ResetZoom(zoom, center.x, center.y, 800, 600);
for (int i = 0; i < triangles.size(); i++) {
Triangle& t = *triangles[i];
Point& a = *t.GetPoint(0);
Point& b = *t.GetPoint(1);
Point& c = *t.GetPoint(2);
// Red
glColor3f(1, 0, 0);
glBegin(GL_LINE_LOOP);
glVertex2f(a.x, a.y);
glVertex2f(b.x, b.y);
glVertex2f(c.x, c.y);
glEnd();
}
// green
glColor3f(0, 1, 0);
for(int i = 0; i < polylines.size(); i++) {
vector<Point*> poly = polylines[i];
glBegin(GL_LINE_LOOP);
for(int j = 0; j < poly.size(); j++) {
glVertex2f(poly[j]->x, poly[j]->y);
}
glEnd();
}
}
void DrawMap(const double zoom)
{
// reset zoom
Point center = Point(cx, cy);
ResetZoom(zoom, center.x, center.y, 800, 600);
list<Triangle*>::iterator it;
for (it = map.begin(); it != map.end(); it++) {
Triangle& t = **it;
Point& a = *t.GetPoint(0);
Point& b = *t.GetPoint(1);
Point& c = *t.GetPoint(2);
ConstrainedColor(t.constrained_edge[2]);
glBegin(GL_LINES);
glVertex2f(a.x, a.y);
glVertex2f(b.x, b.y);
glEnd( );
ConstrainedColor(t.constrained_edge[0]);
glBegin(GL_LINES);
glVertex2f(b.x, b.y);
glVertex2f(c.x, c.y);
glEnd( );
ConstrainedColor(t.constrained_edge[1]);
glBegin(GL_LINES);
glVertex2f(c.x, c.y);
glVertex2f(a.x, a.y);
glEnd( );
}
}
void ConstrainedColor(bool constrain)
{
if (constrain) {
// Green
glColor3f(0, 1, 0);
} else {
// Red
glColor3f(1, 0, 0);
}
}
vector<Point*> CreateHeadHole() {
vector<Point*> head_hole;
head_hole.push_back(new Point(325, 437));
head_hole.push_back(new Point(320, 423));
head_hole.push_back(new Point(329, 413));
head_hole.push_back(new Point(332, 423));
return head_hole;
}
vector<Point*> CreateChestHole() {
vector<Point*> chest_hole;
chest_hole.push_back(new Point(320.72342,480));
chest_hole.push_back(new Point(338.90617,465.96863));
chest_hole.push_back(new Point(347.99754,480.61584));
chest_hole.push_back(new Point(329.8148,510.41534));
chest_hole.push_back(new Point(339.91632,480.11077));
chest_hole.push_back(new Point(334.86556,478.09046));
return chest_hole;
}
double StringToDouble(const std::string& s)
{
std::istringstream i(s);
double x;
if (!(i >> x))
return 0;
return x;
}
double Fun(double x)
{
return 2.5 + sin(10 * x) / x;
}
double Random(double (*fun)(double), double xmin = 0, double xmax = 1)
{
static double (*Fun)(double) = NULL, YMin, YMax;
static bool First = true;
// Initialises random generator for first call
if (First)
{
First = false;
srand((unsigned) time(NULL));
}
// Evaluates maximum of function
if (fun != Fun)
{
Fun = fun;
YMin = 0, YMax = Fun(xmin);
for (int iX = 1; iX < RAND_MAX; iX++)
{
double X = xmin + (xmax - xmin) * iX / RAND_MAX;
double Y = Fun(X);
YMax = Y > YMax ? Y : YMax;
}
}
// Gets random values for X & Y
double X = xmin + (xmax - xmin) * rand() / RAND_MAX;
double Y = YMin + (YMax - YMin) * rand() / RAND_MAX;
// Returns if valid and try again if not valid
return Y < fun(X) ? X : Random(Fun, xmin, xmax);
}

94
wscript
View File

@ -1,47 +1,47 @@
#!/usr/bin/env python
# encoding: utf-8
# waf 1.6.10
VERSION='0.3.3'
import sys
APPNAME='p2t'
top = '.'
out = 'build'
CPP_SOURCES = ['poly2tri/common/shapes.cc',
'poly2tri/sweep/cdt.cc',
'poly2tri/sweep/advancing_front.cc',
'poly2tri/sweep/sweep_context.cc',
'poly2tri/sweep/sweep.cc',
'testbed/main.cc']
from waflib.Tools.compiler_cxx import cxx_compiler
cxx_compiler['win32'] = ['g++']
#Platform specific libs
if sys.platform == 'win32':
# MS Windows
sys_libs = ['glfw', 'opengl32']
elif sys.platform == 'darwin':
# Apple OSX
sys_libs = ['glfw']
else:
# GNU/Linux, BSD, etc
sys_libs = ['glfw', 'GL']
def options(opt):
print(' set_options')
opt.load('compiler_cxx')
def configure(conf):
print(' calling the configuration')
conf.load('compiler_cxx')
conf.env.CXXFLAGS = ['-O3', '-ffast-math']
conf.env.DEFINES_P2T = ['P2T']
conf.env.LIB_P2T = sys_libs
if sys.platform == 'darwin':
conf.env.FRAMEWORK = ['OpenGL', 'Cocoa']
def build(bld):
print(' building')
bld.program(features = 'cxx cxxprogram', source=CPP_SOURCES, target = 'p2t', uselib = 'P2T')
#!/usr/bin/env python
# encoding: utf-8
# waf 1.6.10
VERSION='0.3.3'
import sys
APPNAME='p2t'
top = '.'
out = 'build'
CPP_SOURCES = ['poly2tri/common/shapes.cc',
'poly2tri/sweep/cdt.cc',
'poly2tri/sweep/advancing_front.cc',
'poly2tri/sweep/sweep_context.cc',
'poly2tri/sweep/sweep.cc',
'testbed/main.cc']
from waflib.Tools.compiler_cxx import cxx_compiler
cxx_compiler['win32'] = ['g++']
#Platform specific libs
if sys.platform == 'win32':
# MS Windows
sys_libs = ['glfw', 'opengl32']
elif sys.platform == 'darwin':
# Apple OSX
sys_libs = ['glfw']
else:
# GNU/Linux, BSD, etc
sys_libs = ['glfw', 'GL']
def options(opt):
print(' set_options')
opt.load('compiler_cxx')
def configure(conf):
print(' calling the configuration')
conf.load('compiler_cxx')
conf.env.CXXFLAGS = ['-O3', '-ffast-math']
conf.env.DEFINES_P2T = ['P2T']
conf.env.LIB_P2T = sys_libs
if sys.platform == 'darwin':
conf.env.FRAMEWORK = ['OpenGL', 'Cocoa']
def build(bld):
print(' building')
bld.program(features = 'cxx cxxprogram', source=CPP_SOURCES, target = 'p2t', uselib = 'P2T')