I’m having problem during the apply of textures to my objects in a project…The textures don’t appairs in the scene…
here my code
#include <math.h>
#include <GL/glut.h>
#include "Terrain.h"
#include "VectorR3.h"
#include "tga.h"
#include <iostream>
using namespace std;
#define TEXTURE_COUNT 2
#define BAR_SCALE 0
#define SAT_TEXTURE 1
GLuint textures[TEXTURE_COUNT];
const char *textureFile[TEXTURE_COUNT] = { "temp.tga", "sat.tga" };
int width = 0, height = 0;
int precx, precy;
int zoomFactor = 5;
VectorR3 eye;
VectorR3 focus;
VectorR3 normal;
VectorR3 rotation;
VectorR3 translate;
int anglex = 0, angley = 0, anglez = 0, angle = 0;
static GLenum filling = GL_FILL;
bool rotationX = false;
bool rotationY = false;
bool rotationZ = false;
bool zoomIn = false, zoomOut = false;
bool buttonLeftDawn = false, buttonRightDawn = false, buttonMiddleDawn = false;
bool transl = false, trasla = false;
using namespace std;
// function prototypes
void disp(void);
void reshape(int w, int h);
void init();
void createAxis();
void writeNumAxis();
void mouse(int, int, int, int);
void mousemotion(int x, int y);
void keyboard(unsigned char key, int x, int y);
void ShutdownTextures();
GLuint legenda_temperatura;
GLuint texture_satellite;
Terrain* terreno;
Terrain* colata;
Terrain* temperature;
int x, y;
int main(int argc, char **argv) {
terreno = new Terrain(argv[1]);
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowSize(500, 500);
glutInitWindowPosition(100, 100);
glutCreateWindow("Visualizzatore terreno");
init();
glutDisplayFunc(disp);
glutReshapeFunc(reshape);
glutMouseFunc(mouse);
glutMotionFunc(mousemotion);
glutKeyboardFunc(keyboard);
glutMainLoop();
terreno->~Terrain();
if (argv[2] != NULL)
colata->~Terrain();
if (argv[3] != NULL)
temperature->~Terrain();
ShutdownTextures();
return 0;
}
void mousemotion(int x, int y) {
x = x - (width / 2);
y = y - (height / 2);
if (trasla) {
translate.set(translate.getX() + (x - precx),
translate.getY() + (-y + precy), 0);
glutPostRedisplay();
} else {
if (buttonLeftDawn) {
anglex = (anglex + (y - precy)) % 360;
glutPostRedisplay();
}
if (buttonRightDawn) {
angley = (angley + (x - precx)) % 360;
glutPostRedisplay();
}
if (buttonMiddleDawn) {
anglex = (anglex + (y - precy)) % 360;
angley = (angley + (x - precx)) % 360;
glutPostRedisplay();
}
}
precx = x;
precy = y;
}
void mouse(int button, int state, int x1, int y1) {
x1 = x1 - (width / 2);
y1 = y1 - (height / 2);
if (button == GLUT_LEFT_BUTTON) {
if (state == GLUT_DOWN)
buttonLeftDawn = true;
else
buttonLeftDawn = false;
} else
buttonLeftDawn = false;
if (button == GLUT_RIGHT_BUTTON) {
if (state == GLUT_DOWN)
buttonRightDawn = true;
else
buttonRightDawn = false;
} else
buttonRightDawn = false;
if (button == GLUT_MIDDLE_BUTTON) {
if (state == GLUT_DOWN)
buttonMiddleDawn = true;
else
buttonMiddleDawn = false;
} else
buttonMiddleDawn = false;
if (button == 3 && state == GLUT_UP)
eye.set(0, 0, eye.getZ() + 85);
if (button == 4 && state == GLUT_UP)
eye.set(0, 0, eye.getZ() - 85);
if (button == GLUT_MIDDLE_BUTTON && state == GLUT_DOWN && transl)
trasla = true;
else {
transl = false;
trasla = false;
}
precx = x1;
precy = y1;
keyboard('/', 0, 0);
}
void createAxis() {
glColor3f(1, 0, 0);
glBegin(GL_LINES); //Start drawing the X asse
glVertex3f(0, 0, 0); //draw first coordinate
glVertex3f(10000, 0, 0); //second coordinate
glEnd(); //Stop drawing
glColor3f(0, 1, 0);
glBegin(GL_LINES); //Start drawing the Y asse
glVertex3f(0, 0, 0); //draw first coordinate
glVertex3f(0, 10000, 0); //second coordinate
glEnd(); //Stop drawing
glColor3f(0, 0, 1);
glBegin(GL_LINES); //Start drawing the Z asse
glVertex3f(0, 0, 0); //draw first coordinate
glVertex3f(0, 0, 10000); //second coordinate
glEnd();
}
GLint terrain;
void init() {
GLbyte *pBytes;
GLint iWidth, iHeight, iComponents;
GLenum eFormat;
GLubyte i;
glEnable(GL_DEPTH_TEST);
glFrontFace(GL_CCW);
terrain = glGenLists(1);
glNewList(terrain, GL_COMPILE);
terreno->drawTerrain();
glEndList();
glClearColor(0.0, 0.99, 0.01, 0.1);
glEnable(GL_COLOR_MATERIAL);
//Set Material properties to follow glColor values
glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
glEnable(GL_NORMALIZE); //Have OpenGL automatically normalize our normals
glShadeModel(GL_SMOOTH); //Enable smooth shading
glEnable(GL_LIGHTING); //Enable lighting
glEnable(GL_LIGHT0); //Enable light #0
GLfloat AmbientLight[] = { 0.2, 0.2, 0.2, 1.0 };
GLfloat DiffuseLight[] = { 0.5, 0.5, 0.5, 1.0 };
GLfloat SpecularLight[] = { 0.0, 0.0, 0.0, 1.0 };
glLightfv(GL_LIGHT0, GL_AMBIENT, AmbientLight);
glLightfv(GL_LIGHT0, GL_DIFFUSE, DiffuseLight);
glLightfv(GL_LIGHT0, GL_SPECULAR, SpecularLight);
GLfloat LightPosition[] = { 0.0, 0.0, 300.0, 0.0 };
GLfloat LightDirection[] = { 0.0, 0.0, -1.0, 1.0 };
glLightfv(GL_LIGHT0, GL_POSITION, LightPosition);
glLightfv(GL_LIGHT0, GL_POSITION, LightDirection);
normal.setX(0);
normal.setY(1);
normal.setZ(0);
precx = precy = 0;
eye.setX(0);
eye.setY(0);
focus.setX(0);
focus.setY(0);
focus.setZ(0);
translate.setY(0);
translate.setZ(0);
eye.setZ(terreno->getLenght() * terreno->getCellSize() * 16);
// Enable textur mapping and mode
glEnable(GL_TEXTURE_2D);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glGenTextures(TEXTURE_COUNT, textures);
// Load texture
for (i = 0; i < TEXTURE_COUNT; i++)
{
glBindTexture(GL_TEXTURE_2D, textures[i]);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
pBytes = gltLoadTGA(textureFile[i], &iWidth, &iHeight, &iComponents, &eFormat);
glTexImage2D(GL_TEXTURE_2D, 0, iComponents, iWidth, iHeight, 0, eFormat, GL_UNSIGNED_BYTE, pBytes);
delete [] pBytes;
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
}
}
void ShutdownTextures(void)
{
glDeleteTextures(TEXTURE_COUNT, textures);
}
void reshape(int x, int y) {
width = x;
height = y;
glViewport(0, 0, x, y);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
GLfloat z_near = 0.5f;
GLfloat z_far = 150000;
GLfloat angle_perspective = 45.0f;
gluPerspective(angle_perspective / zoomFactor, (GLdouble) x / (GLdouble) y, z_near,
z_far);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(eye.getX(), eye.getY(), eye.getZ(), focus.getX(), focus.getY(),
focus.getZ(), normal.getX(), normal.getY(), normal.getZ());
}
void writeNumAxis() {
for (int i = 0; i <= 10000; i += 100) {
glRasterPos3f(i, 0, 0);
glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_10, '/');
glRasterPos3f(0, i, 0);
glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_10, '-');
glRasterPos3f(0, 0, i);
glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_10, '\\');
}
}
void keyboard(unsigned char key, int x, int y) {
switch (key) {
case ' ':
transl = true;
break;
case 'f':
filling == GL_FILL ? filling = GL_LINE : filling = GL_FILL;
glPolygonMode(GL_FRONT_AND_BACK, filling);
break;
case 27:
exit(0);
break;
default:
break;
}
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(eye.getX(), eye.getY(), eye.getZ(), focus.getX(), focus.getY(),
focus.getZ(), normal.getX(), normal.getY(), normal.getZ());
glutPostRedisplay();
}
void disp() {
//size del terreno
int size = terreno->getCellSize();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glBindTexture(GL_TEXTURE_2D, textures[BAR_SCALE]);
glRectf(2000, 2000, 2300, 1400);
glTranslatef(translate.getX(), translate.getY(), 0);
//lo rimetto nella posizione di partenza
glTranslatef(((terreno->getCol() * size) / 2), (terreno->getMax() + terreno->getMin()) / 2,
(terreno->getRow() * size) / 2);
glRotatef(anglex, 1, 0, 0);
glRotatef(angley, 0, 1, 0);
glRotatef(anglez, 0, 0, 1);
//lo sposto con il centro in zero e applico le 3 rotazioni
glTranslatef(-((terreno->getCol() * size) / 2), -(terreno->getMax() + terreno->getMin()) / 2,
-(terreno->getRow() * size) / 2);
glPushMatrix();
glTranslatef(terreno->getLenght()*size/2,
(terreno->getMax() + terreno->getMin())/2,
terreno->getLenght()*size/2);
glutWireCube(terreno->getLenght() * size);
glPopMatrix();
glBindTexture(GL_TEXTURE_2D, textures[SAT_TEXTURE]);
glCallList(terrain);
createAxis();
writeNumAxis();
glPopMatrix();
glutSwapBuffers();
}
and here my class that load the tga images:
#include <GL/glut.h>
#include <iostream>
#include <fstream>
using namespace std;
// Define targa header.
#pragma pack(1)
typedef struct
{
GLbyte identsize; // Size of ID field that follows header (0)
GLbyte colorMapType; // 0 = None, 1 = paletted
GLbyte imageType; // 0 = none, 1 = indexed, 2 = rgb, 3 = grey, +8=rle
unsigned short colorMapStart; // First colour map entry
unsigned short colorMapLength; // Number of colors
unsigned char colorMapBits; // bits per palette entry
unsigned short xstart; // image x origin
unsigned short ystart; // image y origin
unsigned short width; // width in pixels
unsigned short height; // height in pixels
GLbyte bits; // bits per pixel (8 16, 24, 32)
GLbyte descriptor; // image descriptor
} TGAHEADER;
#pragma pack(8)
////////////////////////////////////////////////////////////////////
// Allocate memory and load targa bits. Returns pointer to new buffer,
// height, and width of texture, and the OpenGL format of data.
// Call free() on buffer when finished!
// This only works on pretty vanilla targas... 8, 24, or 32 bit color
// only, no palettes, no RLE encoding.
GLbyte *gltLoadTGA(const char *szFileName, GLint *iWidth, GLint *iHeight, GLint *iComponents, GLenum *eFormat)
{
FILE *pFile; // File pointer
TGAHEADER tgaHeader; // TGA file header
unsigned long lImageSize; // Size in bytes of image
short sDepth; // Pixel depth;
GLbyte *pBits = NULL; // Pointer to bits
// Default/Failed values
*iWidth = 0;
*iHeight = 0;
*eFormat = GL_BGR_EXT;
*iComponents = GL_RGB8;
// Attempt to open the fil
pFile = fopen(szFileName, "rb");
if(pFile == NULL)
return NULL;
// Read in header (binary)
fread(&tgaHeader, 18/* sizeof(TGAHEADER)*/, 1, pFile);
// Do byte swap for big vs little endian
#ifdef __APPLE__
BYTE_SWAP(tgaHeader.colorMapStart);
BYTE_SWAP(tgaHeader.colorMapLength);
BYTE_SWAP(tgaHeader.xstart);
BYTE_SWAP(tgaHeader.ystart);
BYTE_SWAP(tgaHeader.width);
BYTE_SWAP(tgaHeader.height);
#endif
// Get width, height, and depth of texture
*iWidth = tgaHeader.width;
*iHeight = tgaHeader.height;
sDepth = tgaHeader.bits / 8;
// Put some validity checks here. Very simply, I only understand
// or care about 8, 24, or 32 bit targa's.
if(tgaHeader.bits != 8 && tgaHeader.bits != 24 && tgaHeader.bits != 32)
return NULL;
// Calculate size of image buffer
lImageSize = tgaHeader.width * tgaHeader.height * sDepth;
// Allocate memory and check for success
pBits = new GLbyte[(lImageSize * sizeof(GLbyte))];
if(pBits == NULL)
return NULL;
// Read in the bits
// Check for read error. This should catch RLE or other
// weird formats that I don't want to recognize
if(fread(pBits, lImageSize, 1, pFile) != 1)
{
delete [](pBits);
return NULL;
}
// Set OpenGL format expected
switch(sDepth)
{
case 3: // Most likely case
*eFormat = GL_BGR_EXT;
*iComponents = GL_RGB8;
break;
case 4:
*eFormat = GL_BGRA_EXT;
*iComponents = GL_RGBA8;
break;
case 1:
*eFormat = GL_LUMINANCE;
*iComponents = GL_LUMINANCE8;
break;
};
// Done with File
fclose(pFile);
for(int i = 0; i < sizeof(*pBits); i++)
cout << pBits[i];
// Return pointer to image data
return pBits;
}
can someone help me? thanks in advance.
