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+

testbed/data/star.dat

@@ -0,0 +1,10 @@
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testbed/data/strange.dat

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testbed/data/tank.dat

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testbed/data/test.dat

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testbed/main.cc

@@ -0,0 +1,244 @@
+/* 
+ * Poly2Tri Copyright (c) 2009-2010, Mason Green
+ * 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"
+
+
+void Init();
+void ShutDown(int return_code);
+void MainLoop();
+void Draw();
+ 
+float rotate_y = 0,
+      rotate_z = 0;
+const float rotations_per_tick = .2;
+
+list<Triangle*> triangles;
+
+double StringToDouble(const std::string& s) {
+  std::istringstream i(s);
+  double x;
+  if (!(i >> x))
+   return 0;
+  return x;
+}
+
+int main(int argc, char* argv[]) {
+  
+	/*
+  // initialize random seed: 
+  srand ( time(NULL) );
+  
+  int a = 0;
+  int b = 2000;
+  
+  for(int i = 0; i < num_points; i++) {
+    double x = rand() % (b - a - 1) + a + 1;
+    double y = rand() % (b - a - 1) + a + 1;
+    polyline[i] = Point(x, y);
+  }
+	
+  polyline[0] = Point(5, 5);
+	polyline[1] = Point(-5, 5);
+	polyline[2] = Point(-5, -5); 
+	polyline[3] = Point(5, -5);
+  
+  //Point foo[] = {Point(5, 5.1), Point(-5, 5.2), Point(-5, -5.3), Point(5, -5.4), Point(5.1, 5.5), Point(5, 5.5),
+  //             Point(-5, 5.6), Point(-5, -5.7), Point(5, -5.8), Point(5, 5.9), Point(-5, 5.1), 
+  //             Point(-5, -5.11), Point(5, -5.12), Point(5, 5.13), Point(-5, 5.14), Point(-5, -5.15), Point(5, -5.16)};
+  
+  */
+  
+  string line;
+  ifstream myfile (argv[1]);
+  vector<Point> points;
+  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]);
+      points.push_back(Point(x, y));
+    }
+    myfile.close();
+  } else {
+    cout << "File not opened" << endl;
+  }
+  
+  int num_points = points.size();
+  cout << "Number of points = " << num_points << endl;
+  
+	Point* polyline = new Point[num_points];
+  for(int i = 0; i < num_points; i++) {
+    polyline[i] = points[i];
+  }
+  
+  Init();
+  
+  // Perform triangulation
+  double init_time = glfwGetTime();
+  CDT * cdt = new CDT(polyline, num_points);
+  cdt->Triangulate();
+  double dt = glfwGetTime() - init_time;
+  cout << "Elapsed time (secs) = " << dt << endl;
+  
+  triangles = cdt->GetTriangles();
+  
+  MainLoop();
+  
+  delete [] polyline;
+  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("The GLFW Window");
+ 
+  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()
+{
+  // 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
+    Draw();
+    // 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()
+{
+  // reset zoom
+  double zoom = 0.5;
+  ResetZoom(zoom, 0, 0, 800, 600);
+  
+  list<Triangle*>::iterator it; 
+  for (it = triangles.begin(); it != triangles.end(); it++) {
+    Triangle* t = *it;
+    Point* a = t->GetPoint(0);
+    Point* b = t->GetPoint(1);
+    Point* c = t->GetPoint(2);
+    
+    // Red
+    glColor3f(1, 0, 0);
+    
+    glBegin(GL_LINE_LOOP);			  // Drawing Using Triangles
+      glVertex2f(a->x, a->y);				// Top
+      glVertex2f(b->x, b->y);				// Bottom Left
+      glVertex2f(c->x, c->y);				// Bottom Right
+    glEnd();
+  
+  }
+  
+}