Color matGetDiffuse( Material material, Vector textureCoordinate )
{
int x;
int y;
int width;
int height;
if( material->texture == NULL )
{
return material->diffuseColor;
}
imageGetDimensions( material->texture, &width, &height );
x = ( (int)( textureCoordinate.x * ( width - 1 ) ) % width );
y = ( (int)( textureCoordinate.y * ( height - 1 ) ) % height );
return imageGetPixel( material->texture, x, y );
}
void create_subimage(subimage_t * destsi, pngimage_t * origimg, int slices, int theslicenumber, int pixelborder)
{
int xstart, i, j, wth, w, n, wth2;
wth = origimg->imgWidth / slices;
if((wth * slices < origimg->imgWidth) && (origimg->imgWidth % slices > theslicenumber))
{
wth ++;
}
w = wth + ( ((theslicenumber==0)||(theslicenumber==slices-1)) ? pixelborder : 2*pixelborder );
destsi->w = w;
destsi->h = origimg->imgHeight;
destsi->Bpp = 3;
destsi->bytesAllocated = next16multiple(destsi->w * destsi->h * destsi->Bpp);
destsi->data = (unsigned char *) memalign(16, destsi->bytesAllocated);
destsi->dataLS = 0;
xstart = 0;
for(n=0; n<theslicenumber; n++)
{
wth2 = origimg->imgWidth / slices;
if((wth2 * slices < origimg->imgWidth) && (origimg->imgWidth % slices > n))
{
wth2 ++;
}
xstart += wth2;
}
// printf("AAA slices=%d tsn=%d wth=%d w=%d xstart=%d\n", slices, theslicenumber, wth, w, xstart);
for(i=0; i<destsi->h; i++)
{
for(j=0; j<w; j++)
{
unsigned char r, g, b;
imageGetPixel(origimg, xstart + j - ( theslicenumber==0 ? 0 : pixelborder ), i, &r, &g, &b);
subimage_setpixel(destsi, j, i, r, g, b);
}
}
}
/* - Callback de repaint do canvas */
int repaint_cb(Ihandle *self)
{
int w,h;
int x,y;
Color rgb;
if (yc==0){ /* e' a primeira vez: limpa o canvas */
IupGLMakeCurrent(self);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT);
IupGLSwapBuffers(self); /* change the back buffer with the front buffer */
glFlush();
}
if (yc!=height) { /* esta callback so'desenha depois que o algoritmo termina a imagem */
return IUP_DEFAULT;
}
w = imgGetWidth(image);
h = imgGetHeight(image);
IupGLMakeCurrent(self);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_POINTS);
for (y=0;y<h;y++) {
for (x=0; x<w; x++) {
rgb = imageGetPixel(image, x, y);
glColor3f((float)rgb.red,(float)rgb.green,(float)rgb.blue);
glVertex2i(x,y);
}
}
glEnd();
IupGLSwapBuffers(self); /* change the back buffer with the front buffer */
glFlush();
return IUP_DEFAULT; /* retorna o controle para o gerenciador de eventos */
}
