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createTexture.cpp
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createTexture.cpp
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// wandelt drei Matrix-Bilder in ein TexImage um
#include <GL/glut.h>
#include <stdlib.h>
#include "LA.h"
#include "bmp.h"
#include "createTexture.h"
void createTexture(FMatrix &imr,
FMatrix &img,
FMatrix &imb) {
int point_i,x,y;
GLfloat *texels = NULL;
texels=(GLfloat *) malloc (3*imr.width()*imr.height()*sizeof(GLfloat));
point_i=0;
for (y=imr.nrl;y<=imr.nrh;y++) {
for (x=imr.ncl;x<=imr.nch;x++) {
texels[point_i++] = (GLfloat) imr.m[y][x];
texels[point_i++] = (GLfloat) img.m[y][x];
texels[point_i++] = (GLfloat) imb.m[y][x];
}
}
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
if (TexMMM & 2)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
else
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
if (TexMMM & 1)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
else
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, imr.width(), imr.height(), 0, GL_RGB, GL_FLOAT, texels);
free(texels);
}
void createTextureAlpha(FMatrix &imr,
FMatrix &img,
FMatrix &imb) {
int point_i,x,y;
GLfloat *texels = NULL;
texels=(GLfloat *) malloc (4*imr.width()*imr.height()*sizeof(GLfloat));
point_i=0;
for (y=imr.nrl;y<=imr.nrh;y++) {
for (x=imr.ncl;x<=imr.nch;x++) {
texels[point_i++] = (GLfloat) img.m[y][x];
texels[point_i++] = (GLfloat) img.m[y][x];
texels[point_i++] = (GLfloat) imb.m[y][x];
texels[point_i++] = (GLfloat) imr.m[y][x];
}
}
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
if (TexMMM & 2)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
else
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
if (TexMMM & 1)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
else
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, imr.width(), imr.height(), 0, GL_RGBA, GL_FLOAT, texels);
free(texels);
}
void createTextureText(FMatrix &img,
GLint x,
GLint y,
GLint Rastergroesse) {
int point_i,ax,ay;
GLfloat *texels = NULL;
texels=(GLfloat *) malloc (2*Rastergroesse*Rastergroesse*sizeof(GLfloat));
point_i=0;
for ( ay = (15-y)*Rastergroesse ; ay < (16-y)*Rastergroesse ; ay++ ) {
for ( ax = x*Rastergroesse ; ax < (x+1)*Rastergroesse ; ax++) {
texels[point_i++] = (GLfloat) 1.0;
texels[point_i++] = (GLfloat) img.m[ay][ax];
}
}
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
if (TexMMM & 2)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
else
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
if (TexMMM & 1)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
else
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE_ALPHA, Rastergroesse, Rastergroesse, 0, GL_LUMINANCE_ALPHA, GL_FLOAT, texels);
free(texels);
}
void createTextureText2(FMatrix &img,
GLint x,
GLint y,
GLint Rastergroesse) {
int point_i,ax,ay;
GLfloat *texels = NULL;
texels=(GLfloat *) malloc (2*Rastergroesse*Rastergroesse*sizeof(GLfloat));
point_i=0;
for ( ay = (15-y)*Rastergroesse ; ay < (16-y)*Rastergroesse ; ay++ ) {
for ( ax = x*Rastergroesse ; ax < (x+1)*Rastergroesse ; ax++) {
texels[point_i++] = (GLfloat) 0.0;
texels[point_i++] = (GLfloat) img.m[ay][ax];
//printf ("%i,%i ",ax,ay);
}
}
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
if (TexMMM & 2)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
else
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
if (TexMMM & 1)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
else
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE_ALPHA, Rastergroesse, Rastergroesse, 0, GL_LUMINANCE_ALPHA, GL_FLOAT, texels);
free(texels);
}
void createTextureAlpha2(FMatrix &imr,
FMatrix &img,
FMatrix &imb,
FMatrix &ima) {
int point_i,x,y;
GLfloat *texels = NULL;
texels=(GLfloat *) malloc (4*imr.width()*imr.height()*sizeof(GLfloat));
point_i=0;
for (y=imr.nrl;y<=imr.nrh;y++) {
for (x=imr.ncl;x<=imr.nch;x++) {
texels[point_i++] = (GLfloat) imr.m[y][x];
texels[point_i++] = (GLfloat) img.m[y][x];
texels[point_i++] = (GLfloat) imb.m[y][x];
texels[point_i++] = (GLfloat) ima.m[y][x];
}
}
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
if (TexMMM & 2)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
else
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
if (TexMMM & 1)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
else
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, imr.width(), imr.height(), 0, GL_RGBA, GL_FLOAT, texels);
free(texels);
}
void createTextureMipmap(FMatrix &imr,
FMatrix &img,
FMatrix &imb) {
int point_i,x,y;
GLfloat *texels = NULL;
texels=(GLfloat *) malloc (3*imr.width()*imr.height()*sizeof(GLfloat));
point_i=0;
for (y=imr.nrl;y<=imr.nrh;y++) {
for (x=imr.ncl;x<=imr.nch;x++) {
texels[point_i++] = (GLfloat) imr.m[y][x];
texels[point_i++] = (GLfloat) img.m[y][x];
texels[point_i++] = (GLfloat) imb.m[y][x];
}
}
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
if (TexMMM & 2) {
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
} else {
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
}
if (TexMMM & 1) {
if (TexMMM & 4) {
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
} else {
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
}
} else {
if (TexMMM & 4) {
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_LINEAR);
} else {
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
}
}
gluBuild2DMipmaps(GL_TEXTURE_2D,GL_RGB,imr.width(),imr.height(),GL_RGB,GL_FLOAT,texels);
free(texels);
}