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[Code] Add Mesh Visualisierung

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This commit is contained in:
Andre Meyering 2018-10-31 13:59:25 +01:00
parent 6861ca9707
commit 8c992e539e
4 changed files with 161248 additions and 2 deletions
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4
Code/CMakeLists.txt
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@ -19,3 +19,7 @@ add_executable (koordinatensystem template_koordinatensystemUndPunkte.c)
target_include_directories(koordinatensystem PRIVATE ${OPENGL_INCLUDE_DIRS} ${GLUT_INCLUDE_DIRS}) target_include_directories(koordinatensystem PRIVATE ${OPENGL_INCLUDE_DIRS} ${GLUT_INCLUDE_DIRS})
target_link_libraries(koordinatensystem ${OPENGL_LIBRARIES} ${GLUT_LIBRARY}) target_link_libraries(koordinatensystem ${OPENGL_LIBRARIES} ${GLUT_LIBRARY})
target_link_libraries(koordinatensystem m) # Math library target_link_libraries(koordinatensystem m) # Math library
add_executable (mesh template_meshVisualisierung.c)
target_include_directories(mesh PRIVATE ${OPENGL_INCLUDE_DIRS} ${GLUT_INCLUDE_DIRS})
target_link_libraries(mesh ${OPENGL_LIBRARIES} ${GLUT_LIBRARY})

160897
Code/bones.txt Normal file
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2
Code/template_koordinatensystemUndPunkte.c
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@ -3,8 +3,6 @@
#include <math.h> #include <math.h>
#include <stdio.h> #include <stdio.h>
#pragma warning(disable:4996)
#define PI 3.14159265358979323846 #define PI 3.14159265358979323846
#define PIf 3.14159265358979323846f #define PIf 3.14159265358979323846f

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