nuclear@36: #include <algorithm>
nuclear@36: #include "opengl.h"
nuclear@36: #include "view3d.h"
nuclear@36: #include "volume.h"
nuclear@36: 
nuclear@36: static int win_width, win_height;
nuclear@36: 
nuclear@36: View3D::View3D()
nuclear@36: {
nuclear@36: 	vol = 0;
nuclear@36: 	thres_low = 0.0;
nuclear@36: 	thres_high = 1.0;
nuclear@36: }
nuclear@36: 
nuclear@36: View3D::~View3D()
nuclear@36: {
nuclear@36: 	destroy();
nuclear@36: }
nuclear@36: 
nuclear@36: bool View3D::init(GLView *glview)
nuclear@36: {
nuclear@36: 	this->glview = glview;
nuclear@36: 	return true;
nuclear@36: }
nuclear@36: 
nuclear@36: void View3D::destroy()
nuclear@36: {
nuclear@36: }
nuclear@36: 
nuclear@36: void View3D::display()
nuclear@36: {
nuclear@36: 	glClearColor(0, 0, 0, 1);
nuclear@36: 	glClear(GL_COLOR_BUFFER_BIT);
nuclear@36: 
nuclear@36: 	glBegin(GL_QUADS);
nuclear@36: 	glColor3f(1, 0, 0);
nuclear@36: 	glVertex2f(thres_low * 2.0 - 1.0, 1);
nuclear@36: 	glVertex2f(thres_low * 2.0 - 1.0, -1);
nuclear@36: 	glColor3f(0, 0, 1);
nuclear@36: 	glVertex2f(thres_high * 2.0 - 1.0, -1);
nuclear@36: 	glVertex2f(thres_high * 2.0 - 1.0, 1);
nuclear@36: 	glEnd();
nuclear@36: }
nuclear@36: 
nuclear@36: 
nuclear@36: void View3D::reshape(int x, int y)
nuclear@36: {
nuclear@36: 	win_width = x;
nuclear@36: 	win_height = y;
nuclear@36: }
nuclear@36: 
nuclear@36: void View3D::set_volume(Volume *vol)
nuclear@36: {
nuclear@36: 	if(this->vol) {
nuclear@36: 		delete this->vol;
nuclear@36: 	}
nuclear@36: 	this->vol = vol;
nuclear@36: 
nuclear@36: 	glview->update();
nuclear@36: }
nuclear@36: 
nuclear@36: void View3D::set_thresholds(float low, float high)
nuclear@36: {
nuclear@36: 	thres_low = std::min(low, high);
nuclear@36: 	thres_high = std::max(low, high);
nuclear@36: 
nuclear@36: 	glview->update();
nuclear@36: }