void PtexViewer::goToFace(int i)
{
if (i>=0 && _displayFace<0) _mainCam = _cam;
else if (i<0) _cam = _mainCam;
_displayFace = i;
if (_displayFace>=0 || (i<0&&_mainCam.getDistance()==0)) frameView();
}
void PtexViewer::pan(int x, int y)
{
double wsize[2];
getWindowSize(wsize[0], wsize[1]);
wsize[0] /= 2.0;
wsize[1] /= 2.0;
float winasp = wsize[0]/wsize[1];
double panX, panY;
double panscale = _cam.getDistance()*0.5;
panX = panscale*((double)(x))/wsize[0];
panY = panscale*((double)(-y))/(wsize[1]*winasp);
_cam.pan(panX,panY,(_mode3d&&_displayFace<0));
}
void PtexViewer::render(int selx, int sely)
{
if (!_shaderProgram) makeShader();
if (_options.bgColorLight) glClearColor(0.8,0.8,0.8,1);
else glClearColor(0.0,0.0,0.0,1);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
GLint vp[4];
glGetIntegerv(GL_VIEWPORT, vp);
float width = vp[2];
float height = vp[3];
float winasp = width/height;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
bool selectMode = selx>=0 && sely>=0;
if (selectMode)
gluPickMatrix((double)selx,(double)vp[3]-sely,3,3,vp);
if (!_mode3d||_displayFace>=0)
{
float sc = _cam.getDistance()/2;
glOrtho(-sc, sc, -sc/winasp, sc/winasp, -100, 100);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(-_cam.getLookAt()[0],-_cam.getLookAt()[1],-_cam.getLookAt()[2]);
}
else
{
_cam.applyProjectionTransform(winasp, _bounds);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
_cam.applyModelViewTransform();
}
glEnable(GL_DEPTH_TEST);
glEnable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset(1.0,1.0);
glColor4f(1.0, 1.0, 1.0, 1.0);
glUseProgramObjectARB(_shaderProgram);
_geometry.draw(_displayFace);
glUseProgramObjectARB(0);
if (!selectMode && _options.showGridLines)
{
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_LINE_SMOOTH);
glColor4f(0.0, 0.0, 0.0, 0.25);
_geometry.draw(_displayFace);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glDisable(GL_BLEND);
glDisable(GL_LINE_SMOOTH);
}
glDisable(GL_POLYGON_OFFSET_FILL);
glDisable(GL_DEPTH_TEST);
if (selectMode) return;
// Display text information
char str[64];
if (_options.bgColorLight) glColor3f(0.0, 0.0, 0.0);
else glColor3f(0.9, 0.9, 0.9);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
if (!_options.envMode)
{
if (_numFaces==1) strcpy(str, "1 face");
else sprintf(str,"%i faces",_numFaces);
renderChars(-0.8,-0.92,GLUT_BITMAP_8_BY_13,str);
if (_displayFace>=0 && _numFaces!=1)
{
sprintf(str,"Face ID: %i",_displayFace);
renderChars(-0.8,0.92,GLUT_BITMAP_8_BY_13,str);
}
if (_numFaces==1)
{
int ures = _geometry.getFace(0)->ures;
int vres = _geometry.getFace(0)->vres;
sprintf(str,"Res: %i x %i",ures,vres);
renderChars(-0.8,0.92,GLUT_BITMAP_8_BY_13,str);
}
else if (_displayFace>=0)
{
int ures = _geometry.getFace(_displayFace)->ures;
int vres = _geometry.getFace(_displayFace)->vres;
sprintf(str,"Face Res: %i x %i",ures,vres);
renderChars(-0.2,0.92,GLUT_BITMAP_8_BY_13,str);
}
renderChars(0.25,-0.92,GLUT_BITMAP_8_BY_13,(char*)_typeStr.c_str());
}
}