[Code] Add Mesh Visualisierung
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6861ca9707
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4 changed files with 161248 additions and 2 deletions
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@ -19,3 +19,7 @@ add_executable (koordinatensystem template_koordinatensystemUndPunkte.c)
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target_include_directories(koordinatensystem PRIVATE ${OPENGL_INCLUDE_DIRS} ${GLUT_INCLUDE_DIRS})
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target_link_libraries(koordinatensystem ${OPENGL_LIBRARIES} ${GLUT_LIBRARY})
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target_link_libraries(koordinatensystem m) # Math library
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add_executable (mesh template_meshVisualisierung.c)
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target_include_directories(mesh PRIVATE ${OPENGL_INCLUDE_DIRS} ${GLUT_INCLUDE_DIRS})
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target_link_libraries(mesh ${OPENGL_LIBRARIES} ${GLUT_LIBRARY})
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160897
Code/bones.txt
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160897
Code/bones.txt
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File diff suppressed because it is too large
Load diff
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@ -3,8 +3,6 @@
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#include <math.h>
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#include <stdio.h>
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#pragma warning(disable:4996)
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#define PI 3.14159265358979323846
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#define PIf 3.14159265358979323846f
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347
Code/template_meshVisualisierung.c
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347
Code/template_meshVisualisierung.c
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@ -0,0 +1,347 @@
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#include <GL/glut.h>
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#include <math.h>
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#include <stdio.h>
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void mouse(int button, int state, int x, int y);
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void key(unsigned char key, int x, int y);
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void init(void);
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void reshape(int, int);
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void display(void);
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int main(int, char**);
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void define_menu(void);
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void idle(void);
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void timer(int value);
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void readcloud(char* filename);
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void mouseactive(int x, int y);
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void mouse(int button, int state, int x, int y);
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float cpoints[3 * 60000];
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float ccolors[3 * 60000];
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int ccoord[10 * 3 * 60000];
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int maxcoords = 0;
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float cpointsmax[3];
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float cpointsmin[3];
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int cpoints_n = 0;
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float xoff;
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float yoff;
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float zoff;
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float zoom;
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int angle1;
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int angle2;
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const float stepsize = 0.05;
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const float anglestepsize = 0.01;
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int displaymodus = 1;
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int pressedbutton = 0;
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int startx, starty;
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int startangle1;
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int startangle2;
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float startxoff;
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float startyoff;
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float startzoff;
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int main(int argc, char** argv)
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{
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readcloud("/home/andre/shares/Bachelor/DHBW_AI_16/4303_Computergraphik_Hopp/Code/bones.txt"); // change this in case the point cloud is saved somewhere else.
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glutInit(&argc, argv);
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glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH); // Doublebuffer for animation
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glutInitWindowSize(800, 800);
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glutInitWindowPosition(400, 100);
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glutCreateWindow("Mesh Visualization");
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init();
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glutMouseFunc(mouse);
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glutMotionFunc(mouseactive);
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glutDisplayFunc(display);
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glutReshapeFunc(reshape);
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glutKeyboardFunc(key);
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puts("\n\nSTEUERUNG\nAnzeigemodi:\n");
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puts("'0' nur Box\n'1' Points, Farbwerte nach Koordinate\n'2' Wireframe, Farbwerte nach Koordinate\n'3' Filled, Farbwerte nach Koordinate");
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puts("'4' Points, Farbwerte aus Datei\n'5' Wireframe, Farbwerte aus Datei\n'6' Filled, Farbwerte aus Datei\n\n");
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puts("Transformationen:\n linke Maustaste und x-y-Bewegung -> Rotation\n mittlere Maustaste und y-Richtung -> Zoom (entspricht einer Skalierung)");
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puts(" rechte Maustaste und x-y-Bewegung -> Translation\n");
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glutMainLoop();
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return 0;
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}
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void displaycloud(int modus)
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{
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int i = 0;
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float range[3];
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for (i = 0; i < 3; i++)
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range[i] = cpointsmax[i] - cpointsmin[i];
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if (modus > 0) {
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if (modus == 1 || modus == 4) { // Display only the vertices
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//////////////////////
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// TODO: set fill mode to render only the vertices
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//////////////////////
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}
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if (modus == 2 || modus == 5) { // Display the outlines of the polygons
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//////////////////////
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// TODO: set fill mode to render only outlines
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//////////////////////
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}
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if (modus == 3 || modus == 6) { // Display filled polygons
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//////////////////////
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// TODO: set fill mode to render filled polygons
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/////////////////////
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}
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glBegin(GL_TRIANGLES); // using the polygone mode "GL_TRIANGLES"
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for (i = 0; i < maxcoords + 1; i++) {
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if (modus > 3) { // Displaying colors saved in the mesh file (node wise definition!)
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glColor3f(ccolors[ccoord[i] * 3], ccolors[ccoord[i] * 3 + 1], ccolors[ccoord[i] * 3 + 2]);
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} else { // Displaying interpolated colors according to the x-/y-/z-value of the point coordinates (node wise definition!)
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glColor3f((cpoints[ccoord[i] * 3] - cpointsmin[0]) / range[0], (cpoints[ccoord[i] * 3 + 1] - cpointsmin[1]) / range[1], (cpoints[ccoord[i] * 3 + 2] - cpointsmin[2]) / range[2]);
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}
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// Definition of vertices
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/////////////////////////////////////////////////////////////////////
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// TODO: definition of vertices.
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// note the data structures: cpoints holds all coordinate components in a 1D array:
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// node j_x can be accessed via cpoints[j*3]
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// node j_y can be accessed via cpoints[j*3+1]
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// node j_z can be accessed via cpoints[j*3+2]
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// note the data structure: ccoord holds the indices into the cpoints array in a 1D array:
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// one triangle consists of 3 consecutive entries of ccoord, i.e.
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// first triangle consists of the vertices referenced in ccoord[0], ccords[1], ccoord[2].
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/////////////////////////////////////////////////////////////////////
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}
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glEnd();
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}
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}
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void display(void)
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{
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glPushMatrix();
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gluLookAt(0, -zoom, 0, 0, zoom * zoom + 5, 0, 0.0, 0.0, 1.0);
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glPushMatrix();
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glEnable(GL_DEPTH_TEST);
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glColor3f(0.0, 0.0, 0.0);
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// center and rotate
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glTranslatef(xoff, yoff, zoff);
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glRotatef(angle2, 1.0, 0.0, 0.0);
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glRotatef(angle1, 0.0, 0.0, 1.0);
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glTranslatef(-(cpointsmax[0] - cpointsmin[0]) / 2 - cpointsmin[0], -(cpointsmax[1] - cpointsmin[1]) / 2 - cpointsmin[1], -(cpointsmax[2] - cpointsmin[2]) / 2 - cpointsmin[2]);
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//display
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displaycloud(displaymodus);
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// draw box
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glColor3f(0.0, 0.0, 0.0);
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glBegin(GL_LINE_LOOP);
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glVertex3f(cpointsmax[0], cpointsmax[1], cpointsmax[2]);
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glVertex3f(cpointsmin[0], cpointsmax[1], cpointsmax[2]);
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glVertex3f(cpointsmin[0], cpointsmin[1], cpointsmax[2]);
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glVertex3f(cpointsmax[0], cpointsmin[1], cpointsmax[2]);
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glEnd();
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glBegin(GL_LINE_LOOP);
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glVertex3f(cpointsmax[0], cpointsmax[1], cpointsmin[2]);
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glVertex3f(cpointsmin[0], cpointsmax[1], cpointsmin[2]);
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glVertex3f(cpointsmin[0], cpointsmin[1], cpointsmin[2]);
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glVertex3f(cpointsmax[0], cpointsmin[1], cpointsmin[2]);
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glEnd();
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glBegin(GL_LINES);
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glVertex3f(cpointsmax[0], cpointsmax[1], cpointsmax[2]);
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glVertex3f(cpointsmax[0], cpointsmax[1], cpointsmin[2]);
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glVertex3f(cpointsmin[0], cpointsmax[1], cpointsmax[2]);
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glVertex3f(cpointsmin[0], cpointsmax[1], cpointsmin[2]);
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glVertex3f(cpointsmin[0], cpointsmin[1], cpointsmax[2]);
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glVertex3f(cpointsmin[0], cpointsmin[1], cpointsmin[2]);
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glVertex3f(cpointsmax[0], cpointsmin[1], cpointsmax[2]);
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glVertex3f(cpointsmax[0], cpointsmin[1], cpointsmin[2]);
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glEnd();
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glPopMatrix();
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glPopMatrix();
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glutSwapBuffers(); // Buffer for animation needs to be swapped
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}
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void init(void)
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{
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glClearColor(0.99, 0.99, 0.99, 0.0);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluPerspective(45.0, 1.0, 1.0, 100.0);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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xoff = 0.0;
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yoff = (cpointsmax[1] - cpointsmin[1]);
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zoff = 0.0;
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zoom = 1;
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angle1 = -45;
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angle2 = 45;
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}
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void reshape(int w, int h)
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{
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glViewport(0, 0, w, h);
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glClear(GL_COLOR_BUFFER_BIT);
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}
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void idle()
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{
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}
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void timer(int value)
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{
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}
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void readcloud(char* filename)
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{
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int i = 0;
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int j = 0;
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FILE* f;
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int abbruch = 0;
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char str[200] = "";
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printf("Lese '%s' ein\n", filename);
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f = fopen(filename, "r");
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printf("Ueberspringe Kopf...\n");
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// Kopf Überspringen
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while (!feof(f) && str[0] != '[')
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fscanf(f, "%s", str);
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printf("Lese Punkte ein...\n");
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//Punkte einlesen
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while (!feof(f) && abbruch == 0) {
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//einlesen
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if (((i + 1) % 3) == 0)
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fscanf(f, "%f %c", &cpoints[i], str);
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else
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fscanf(f, "%f", &cpoints[i]);
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// Extremalwerte initialisieren
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if (i < 3) {
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cpointsmax[i % 3] = cpoints[i];
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cpointsmin[i % 3] = cpoints[i];
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}
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//Abbruch, wenn alle Punkte 0 sind, (nicht ganz sauber, aber funktioniert, wenn nicht zufällig der Urspung ein gültiger Punkt ist)
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if (i > 3 && cpoints[i - 2] == 0 && cpoints[i - 1] == 0 && cpoints[i] == 0)
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abbruch = 1;
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//Extremalwerte gegebenenfalls erneuern
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if (cpoints[i] > cpointsmax[i % 3] && cpoints[i] != 0)
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cpointsmax[i % 3] = cpoints[i];
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if (cpoints[i] < cpointsmin[i % 3] && cpoints[i] != 0)
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cpointsmin[i % 3] = cpoints[i];
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i++;
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}
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cpoints_n = i - 1;
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printf("Es wurden %i Vertices gelesen\n", cpoints_n / 3);
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printf("Koordinaten sind in den Intervallen [%f,%f] [%f,%f] [%f,%f]\n\n", cpointsmin[0], cpointsmax[0], cpointsmin[1], cpointsmax[1], cpointsmin[2], cpointsmax[2]);
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abbruch = 0;
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i = 0;
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//warten, bis es zu den colors geht
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while (!feof(f) && str[0] != '[')
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fscanf(f, "%s", str);
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printf("Lese Farben ein...\n");
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// Farben einlesen
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while (!feof(f) && abbruch == 0) {
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//einlesen
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if (((i + 1) % 3) == 0)
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fscanf(f, "%f %c", &ccolors[i], str);
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else
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fscanf(f, "%f", &ccolors[i]);
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//Abbruch, wenn alle farben 0 sind, (nicht ganz sauber, aber funktioniert, wenn nicht zufällig schwarz eine gültige Farbe ist)
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if (i > 3 && ccolors[i - 2] == 0 && ccolors[i - 1] == 0 && ccolors[i] == 0)
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abbruch = 1;
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i++;
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}
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printf("Es wurden %i Farben eingelesen\n\n", (i - 1) / 3);
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abbruch = 0;
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i = 0;
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//warten, bis es zu den koordinaten geht
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while (!feof(f) && str[0] != '[') {
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fscanf(f, "%s", str);
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}
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printf("Lese Koordinaten fuer die Dreiecke ein...\n");
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// Koordinaten einlesen
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while (!feof(f) && abbruch < 2) {
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//einlesen
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fscanf(f, "%i %c", &ccoord[i], str);
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//printf("%i\n",ccoord[i]);
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//Abbruch, wenn alle Dreiecke 0 sind, (nicht ganz sauber, aber funktioniert, wenn nicht zufällig der Urspung ein gültiger Punkt ist)
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if (ccoord[i] == -1) {
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i--;
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abbruch++;
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} else
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abbruch = 0;
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i++;
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}
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maxcoords = i - 1;
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printf("Es wurden %i Dreiecke eingelesen\n", (maxcoords + 1) / 3); // drei Punkte bilden ein Dreieck
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fclose(f);
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puts("Einlesen beendet\n");
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}
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void key(unsigned char k, int x, int y);
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void mouseactive(int x, int y)
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{
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if (pressedbutton == GLUT_LEFT_BUTTON) {
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angle1 = startangle1 + (x - startx) / 10;
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angle2 = startangle2 + (y - starty) / 10;
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}
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if (pressedbutton == GLUT_RIGHT_BUTTON) {
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xoff = startxoff + (float)(x - startx) / 100;
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zoff = startzoff - (float)(y - starty) / 100;
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}
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if (pressedbutton == GLUT_MIDDLE_BUTTON) {
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yoff = startyoff + ((float)(y - starty) / 100);
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}
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glutPostRedisplay();
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}
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void mouse(int button, int state, int x, int y)
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{
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if (state == GLUT_DOWN) {
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pressedbutton = button;
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startx = x;
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starty = y;
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startangle1 = angle1;
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startangle2 = angle2;
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startxoff = xoff;
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startyoff = yoff;
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startzoff = zoff;
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} else
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pressedbutton = 0;
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}
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void MainMenu(int value)
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{
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switch (value) {
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case 2:
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key('q', 0, 0);
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break;
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}
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}
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void submenu1(int value)
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{
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}
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void define_menu()
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{
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}
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void key(unsigned char k, int x, int y)
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{
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switch (k) {
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case 8: //BACKSPACE
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init();
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break;
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case 27:
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case 'q':
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case 'Q':
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exit(0);
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default:
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if (k > '0' - 1 && k < '7') {
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displaymodus = k - '0';
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printf("Display-Modus: %i\n", displaymodus);
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} else {
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printf("Taste %c mit Steuerzeichen %i nicht belegt\n", k, k);
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}
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break;
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}
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glutPostRedisplay();
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}
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