[Vorlesung] Neuen Code ergänzt
This commit is contained in:
parent
f13697a35c
commit
b08c00ce43
4 changed files with 950 additions and 4 deletions
|
|
@ -26,3 +26,6 @@ target_link_libraries(koordinatensystem m) # Math library
|
|||
|
||||
add_executable (mesh template_meshVisualisierung.c)
|
||||
target_link_libraries(mesh ${OPENGL_LIBRARIES} ${GLUT_LIBRARY})
|
||||
|
||||
add_executable (mesh_shading template_meshVisualisierung_projektion_depthBuffer_aa.c)
|
||||
target_link_libraries(mesh_shading ${OPENGL_LIBRARIES} ${GLUT_LIBRARY})
|
||||
|
|
|
|||
|
|
@ -68,8 +68,9 @@ void displaycloud(int modus)
|
|||
{
|
||||
int i = 0;
|
||||
float range[3];
|
||||
for (i = 0; i < 3; i++){
|
||||
range[i] = cpointsmax[i] - cpointsmin[i];}
|
||||
for (i = 0; i < 3; i++) {
|
||||
range[i] = cpointsmax[i] - cpointsmin[i];
|
||||
}
|
||||
if (modus > 0) {
|
||||
|
||||
if (modus == 1 || modus == 4) { // Display only the vertices
|
||||
|
|
@ -112,8 +113,7 @@ void displaycloud(int modus)
|
|||
// 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].
|
||||
|
||||
glVertex3f(cpoints[ccoord[i]*3],cpoints[ccoord[i]*3+1],cpoints[ccoord[i]*3+2]);
|
||||
|
||||
glVertex3f(cpoints[ccoord[i] * 3], cpoints[ccoord[i] * 3 + 1], cpoints[ccoord[i] * 3 + 2]);
|
||||
|
||||
/////////////////////////////////////////////////////////////////////
|
||||
}
|
||||
|
|
|
|||
446
Code/template_meshVisualisierung_projektion_depthBuffer_aa.c
Normal file
446
Code/template_meshVisualisierung_projektion_depthBuffer_aa.c
Normal file
|
|
@ -0,0 +1,446 @@
|
|||
#include <GL/glut.h>
|
||||
#include <math.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#define ORTHO 1
|
||||
#define PERSPECTIVE 2
|
||||
|
||||
#pragma warning(disable : 4996)
|
||||
|
||||
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);
|
||||
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);
|
||||
void setProjection(int projType);
|
||||
void setAntiAliasing(int state);
|
||||
|
||||
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;
|
||||
|
||||
static float xoff = 0.0f;
|
||||
static float yoff = 0.0f;
|
||||
static double zoff = 0.0;
|
||||
static float zoom;
|
||||
static int angle1;
|
||||
static int angle2;
|
||||
|
||||
const float stepsize = 0.05;
|
||||
const float anglestepsize = 0.01;
|
||||
int displaymodus = 1;
|
||||
int pressedbutton = 0;
|
||||
int startx, starty, startz;
|
||||
int startangle1;
|
||||
int startangle2;
|
||||
float startxoff;
|
||||
float startyoff;
|
||||
float startzoff;
|
||||
|
||||
int projType = PERSPECTIVE; // default: perspective projection
|
||||
|
||||
int antiAliasing = 0;
|
||||
|
||||
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);
|
||||
printf("\n\nSTEUERUNG\nAnzeigemodi:\n");
|
||||
printf("'0' nur Box\n'1' Points, Farbwerte nach Koordinate\n'2' Wireframe, Farbwerte nach Koordinate\n'3' Filled, Farbwerte nach Koordinate\n");
|
||||
printf("'4' Points, Farbwerte aus Datei\n'5' Wireframe, Farbwerte aus Datei\n'6' Filled, Farbwerte aus Datei\n\n\n");
|
||||
printf("Transformationen:\n linke Maustaste und x-y-Bewegung -> Rotation\n mittlere Maustaste und y-Richtung -> Zoom (entspricht einer Skalierung)\n");
|
||||
printf(" rechte Maustaste und x-y-Bewegung -> Translation\n\n");
|
||||
printf("Projektionsart aendern:\n");
|
||||
printf("'o' orthographische Projektion, 'p' perspektivische Projektion \n\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
|
||||
glPolygonMode(GL_FRONT_AND_BACK, GL_POINT);
|
||||
}
|
||||
if (modus == 2 || modus == 5) { // Display the outlines of the polygons
|
||||
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
|
||||
}
|
||||
if (modus == 3 || modus == 6) { // Display filled polygons
|
||||
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
|
||||
}
|
||||
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]);
|
||||
}
|
||||
|
||||
glVertex3f(cpoints[ccoord[i] * 3], cpoints[ccoord[i] * 3 + 1], cpoints[ccoord[i] * 3 + 2]);
|
||||
}
|
||||
glEnd();
|
||||
}
|
||||
}
|
||||
void display(void)
|
||||
{
|
||||
glPushMatrix();
|
||||
|
||||
switch (projType) {
|
||||
case ORTHO:
|
||||
/////////////////////////////////////////////////////////////////////////
|
||||
// note: - vertices are initially all in the range between [-1 1].
|
||||
// - vertices are rotated as given by the user input.
|
||||
// - use zoff to define the zoom with glOrtho
|
||||
|
||||
glMatrixMode(GL_PROJECTION);
|
||||
glLoadIdentity();
|
||||
glOrtho(-2.0 - zoff, 2.0 + zoff, -2.0 - zoff, 2.0 + zoff, -2.0 - zoff, 2.0 + zoff);
|
||||
|
||||
glMatrixMode(GL_MODELVIEW);
|
||||
glLoadIdentity();
|
||||
gluLookAt(0, 0, 0.01, 0, 0, 0, 0, 1, 0);
|
||||
|
||||
/////////////////////////////////////////////////////////////////////////
|
||||
break;
|
||||
|
||||
case PERSPECTIVE:
|
||||
/////////////////////////////////////////////////////////////////////////
|
||||
// note: - use gluPerspective here.
|
||||
// - use zoff to define the zoom with gluLookAt
|
||||
|
||||
glMatrixMode(GL_PROJECTION);
|
||||
glLoadIdentity();
|
||||
gluPerspective(45.0, 1.0, 3, 7); // TODO
|
||||
|
||||
glMatrixMode(GL_MODELVIEW);
|
||||
glLoadIdentity();
|
||||
gluLookAt(0, 0, 5.0 + zoff, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
|
||||
|
||||
/////////////////////////////////////////////////////////////////////////
|
||||
break;
|
||||
}
|
||||
|
||||
glPushMatrix();
|
||||
|
||||
// UEBUNG KAPITEL 6: Depth Buffer
|
||||
////////////////////////////////////////////////////////////////////////////////////////////////
|
||||
// TODO:
|
||||
// - set the default clear value for the depth buffer
|
||||
// - clear color and depth buffer
|
||||
// - enable depth testing
|
||||
// - set depth func
|
||||
|
||||
glClearDepth(1);
|
||||
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
||||
glEnable(GL_DEPTH_TEST);
|
||||
glDepthFunc(GL_LESS);
|
||||
|
||||
//////////////////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
glColor3f(0.0, 0.0, 0.0);
|
||||
// center and rotate
|
||||
glTranslatef(xoff, yoff, 0);
|
||||
glRotatef(angle2, 1.0, 0.0, 0.0);
|
||||
glRotatef(angle1, 0.0, 1.0, 0.0);
|
||||
//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)
|
||||
{
|
||||
|
||||
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||||
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
|
||||
glHint(GL_POINT_SMOOTH_HINT, GL_NICEST);
|
||||
glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST);
|
||||
|
||||
glClearColor(0.99f, 0.99f, 0.99f, 0.0);
|
||||
glLoadIdentity();
|
||||
xoff = 0.0;
|
||||
yoff = 0.0;
|
||||
zoff = 0.0;
|
||||
zoom = 1;
|
||||
angle1 = 45;
|
||||
angle2 = 45;
|
||||
}
|
||||
|
||||
void setAntiAliasing(int state)
|
||||
{
|
||||
antiAliasing = state;
|
||||
|
||||
/////////////////////////// ENABLE / DISABLE Line/Point/Polygon Antialiasing
|
||||
|
||||
//////////////////////////////////////////////////////////////////////////////
|
||||
}
|
||||
|
||||
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] = "";
|
||||
float temp;
|
||||
printf("Lese '%s' ein\n", filename);
|
||||
f = fopen(filename, "r");
|
||||
if (!f) {
|
||||
return;
|
||||
}
|
||||
printf("Ueberspringe Kopf...\n");
|
||||
// Kopf Überspringen
|
||||
int k = 0;
|
||||
while (!feof(f) && str[0] != '[' && k <= 200){
|
||||
fscanf(f, "%s", str);
|
||||
++k;
|
||||
}
|
||||
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);
|
||||
printf("Einlesen beendet\n\n");
|
||||
|
||||
for (j = 0; j < cpoints_n; j++) {
|
||||
// normalize
|
||||
cpoints[j] = cpoints[j] - cpointsmin[j % 3];
|
||||
cpoints[j] = 2 * cpoints[j] / (cpointsmax[j % 3] - cpointsmin[j % 3]);
|
||||
cpoints[j] = cpoints[j] - 1;
|
||||
}
|
||||
cpointsmin[0] = -1;
|
||||
cpointsmin[1] = -1;
|
||||
cpointsmin[2] = -1;
|
||||
|
||||
cpointsmax[0] = 1;
|
||||
cpointsmax[1] = 1;
|
||||
cpointsmax[2] = 1;
|
||||
|
||||
for (j = 0; j < cpoints_n; j++) {
|
||||
if (j % 3 == 1) { // y-coordinate change with z-coordinate
|
||||
temp = cpoints[j];
|
||||
cpoints[j] = cpoints[j + 1];
|
||||
cpoints[j + 1] = temp;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
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;
|
||||
yoff = startyoff + (float)(y - starty) / 100;
|
||||
}
|
||||
if (pressedbutton == GLUT_MIDDLE_BUTTON) {
|
||||
zoff = startzoff + ((float)(y - startz) / 100);
|
||||
}
|
||||
glutPostRedisplay();
|
||||
}
|
||||
void mouse(int button, int state, int x, int y)
|
||||
{
|
||||
if (state == GLUT_DOWN) {
|
||||
pressedbutton = button;
|
||||
startx = x;
|
||||
starty = y;
|
||||
startz = 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);
|
||||
case 'o':
|
||||
projType = ORTHO;
|
||||
printf("Projektion: ORTHOGRAPHIC\n");
|
||||
glutPostRedisplay();
|
||||
break;
|
||||
case 'p':
|
||||
projType = PERSPECTIVE;
|
||||
printf("Projektion: PERSPECTIVE\n");
|
||||
glutPostRedisplay();
|
||||
break;
|
||||
case 'a':
|
||||
if (antiAliasing == 1) {
|
||||
setAntiAliasing(0);
|
||||
printf("Antialiasing disabled\n");
|
||||
} else {
|
||||
setAntiAliasing(1);
|
||||
printf("Antialiasing enabled\n");
|
||||
}
|
||||
|
||||
break;
|
||||
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();
|
||||
}
|
||||
|
|
@ -0,0 +1,497 @@
|
|||
#include <glut.h>
|
||||
#include <math.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#define ORTHO 1
|
||||
#define PERSPECTIVE 2
|
||||
|
||||
#pragma warning(disable:4996)
|
||||
|
||||
|
||||
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 idle();
|
||||
void timer(int value);
|
||||
void readcloud(char* filename);
|
||||
void mouseactive(int x, int y);
|
||||
void mouse(int button, int state, int x, int y);
|
||||
void setProjection(int projType);
|
||||
void setAntiAliasing(int state);
|
||||
|
||||
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, startz;
|
||||
int startangle1;
|
||||
int startangle2;
|
||||
float startxoff;
|
||||
float startyoff;
|
||||
float startzoff;
|
||||
|
||||
int projType = PERSPECTIVE; // default: perspective projection
|
||||
|
||||
int antiAliasing = 0;
|
||||
|
||||
int main(int argc, char** argv)
|
||||
{
|
||||
readcloud("C:\\tmp\\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);
|
||||
printf("\n\nSTEUERUNG\nAnzeigemodi:\n");
|
||||
printf("'0' nur Box\n'1' Points, Farbwerte nach Koordinate\n'2' Wireframe, Farbwerte nach Koordinate\n'3' Filled, Farbwerte nach Koordinate\n");
|
||||
printf("'4' Points, Farbwerte aus Datei\n'5' Wireframe, Farbwerte aus Datei\n'6' Filled, Farbwerte aus Datei\n\n\n");
|
||||
printf("Transformationen:\n linke Maustaste und x-y-Bewegung -> Rotation\n mittlere Maustaste und y-Richtung -> Zoom (entspricht einer Skalierung)\n");
|
||||
printf(" rechte Maustaste und x-y-Bewegung -> Translation\n\n");
|
||||
printf("Projektionsart aendern:\n");
|
||||
printf("'o' orthographische Projektion, 'p' perspektivische Projektion \n\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
|
||||
glPolygonMode(GL_FRONT_AND_BACK, GL_POINT);
|
||||
}
|
||||
if (modus == 2 || modus == 5) { // Display the outlines of the polygons
|
||||
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
|
||||
}
|
||||
if (modus == 3 || modus == 6) { // Display filled polygons
|
||||
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
|
||||
}
|
||||
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]);
|
||||
}
|
||||
|
||||
glVertex3f(cpoints[ccoord[i] * 3], cpoints[ccoord[i] * 3 + 1], cpoints[ccoord[i] * 3 + 2]);
|
||||
|
||||
}
|
||||
glEnd();
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
void display(void)
|
||||
{
|
||||
glPushMatrix();
|
||||
|
||||
|
||||
|
||||
switch (projType) {
|
||||
case ORTHO:
|
||||
/////////////////////////////////////////////////////////////////////////
|
||||
// note: - vertices are initially all in the range between [-1 1].
|
||||
// - vertices are rotated as given by the user input.
|
||||
// - use zoff to define the zoom with glOrtho
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
/////////////////////////////////////////////////////////////////////////
|
||||
break;
|
||||
|
||||
case PERSPECTIVE:
|
||||
/////////////////////////////////////////////////////////////////////////
|
||||
// note: - use gluPerspective here.
|
||||
// - use zoff to define the zoom with gluLookAt
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
/////////////////////////////////////////////////////////////////////////
|
||||
break;
|
||||
|
||||
}
|
||||
|
||||
|
||||
|
||||
glPushMatrix();
|
||||
|
||||
// UEBUNG KAPITEL 6: Depth Buffer
|
||||
////////////////////////////////////////////////////////////////////////////////////////////////
|
||||
// TODO:
|
||||
// - set the default clear value for the depth buffer
|
||||
// - clear color and depth buffer
|
||||
// - enable depth testing
|
||||
// - set depth func
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
//////////////////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
glColor3f(0.0, 0.0, 0.0);
|
||||
// center and rotate
|
||||
glTranslatef(xoff, yoff, 0);
|
||||
glRotatef(angle2, 1.0, 0.0, 0.0);
|
||||
glRotatef(angle1, 0.0, 1.0, 0.0);
|
||||
//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)
|
||||
{
|
||||
|
||||
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||||
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
|
||||
glHint(GL_POINT_SMOOTH_HINT, GL_NICEST);
|
||||
glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST);
|
||||
|
||||
glClearColor(0.99, 0.99, 0.99, 0.0);
|
||||
glLoadIdentity();
|
||||
xoff = 0.0;
|
||||
yoff = 0.0;
|
||||
zoff = 0.0;
|
||||
zoom = 1;
|
||||
angle1 = 45;
|
||||
angle2 = 45;
|
||||
|
||||
}
|
||||
|
||||
|
||||
void setAntiAliasing(int state) {
|
||||
antiAliasing = state;
|
||||
|
||||
/////////////////////////// ENABLE / DISABLE Line/Point/Polygon Antialiasing
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
//////////////////////////////////////////////////////////////////////////////
|
||||
}
|
||||
|
||||
|
||||
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] = "";
|
||||
float temp;
|
||||
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);
|
||||
printf("Einlesen beendet\n\n");
|
||||
|
||||
for (j = 0; j < cpoints_n; j++) {
|
||||
// normalize
|
||||
cpoints[j] = cpoints[j] - cpointsmin[j % 3];
|
||||
cpoints[j] = 2 * cpoints[j] / (cpointsmax[j % 3] - cpointsmin[j % 3]);
|
||||
cpoints[j] = cpoints[j] - 1;
|
||||
}
|
||||
cpointsmin[0] = -1;
|
||||
cpointsmin[1] = -1;
|
||||
cpointsmin[2] = -1;
|
||||
|
||||
cpointsmax[0] = 1;
|
||||
cpointsmax[1] = 1;
|
||||
cpointsmax[2] = 1;
|
||||
|
||||
for (j = 0; j < cpoints_n; j++) {
|
||||
if (j % 3 == 1) { // y-coordinate change with z-coordinate
|
||||
temp = cpoints[j];
|
||||
cpoints[j] = cpoints[j + 1];
|
||||
cpoints[j + 1] = temp;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
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;
|
||||
yoff = startyoff + (float)(y - starty) / 100;
|
||||
}
|
||||
if (pressedbutton == GLUT_MIDDLE_BUTTON)
|
||||
{
|
||||
zoff = startzoff + ((float)(y - startz) / 100);
|
||||
}
|
||||
glutPostRedisplay();
|
||||
}
|
||||
void mouse(int button, int state, int x, int y)
|
||||
{
|
||||
if (state == GLUT_DOWN)
|
||||
{
|
||||
pressedbutton = button;
|
||||
startx = x;
|
||||
starty = y;
|
||||
startz = 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);
|
||||
case 'o':
|
||||
projType = ORTHO;
|
||||
printf("Projektion: ORTHOGRAPHIC\n");
|
||||
glutPostRedisplay();
|
||||
break;
|
||||
case 'p':
|
||||
projType = PERSPECTIVE;
|
||||
printf("Projektion: PERSPECTIVE\n");
|
||||
glutPostRedisplay();
|
||||
break;
|
||||
case 'a':
|
||||
if (antiAliasing == 1) {
|
||||
setAntiAliasing(0);
|
||||
printf("Antialiasing disabled\n");
|
||||
}
|
||||
else {
|
||||
setAntiAliasing(1);
|
||||
printf("Antialiasing enabled\n");
|
||||
}
|
||||
|
||||
break;
|
||||
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();
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue