1.1 --- a/examples/volume/src/volume.c	Thu Apr 17 13:51:10 2014 +0300
     1.2 +++ b/examples/volume/src/volume.c	Sun Aug 23 07:17:56 2015 +0300
     1.3 @@ -25,6 +25,7 @@
     1.4  void disp(void);
     1.5  void reshape(int x, int y);
     1.6  void keyb(unsigned char key, int x, int y);
     1.7 +void keyb_up(unsigned char key, int x, int y);
     1.8  void mouse(int bn, int state, int x, int y);
     1.9  void motion(int x, int y);
    1.10  int parse_args(int argc, char **argv);
    1.11 @@ -38,6 +39,8 @@
    1.12  unsigned int sdr;
    1.13  #endif
    1.14  
    1.15 +float yscale = 1.0;
    1.16 +
    1.17  struct img_pixmap *volume;
    1.18  int xres, yres, num_slices;
    1.19  
    1.20 @@ -67,6 +70,7 @@
    1.21  	glutDisplayFunc(disp);
    1.22  	glutReshapeFunc(reshape);
    1.23  	glutKeyboardFunc(keyb);
    1.24 +	glutKeyboardUpFunc(keyb_up);
    1.25  	glutMouseFunc(mouse);
    1.26  	glutMotionFunc(motion);
    1.27  
    1.28 @@ -158,6 +162,7 @@
    1.29  
    1.30  	glMatrixMode(GL_MODELVIEW);
    1.31  	glPushMatrix();
    1.32 +	glScalef(1.0, yscale, 1.0);
    1.33  	glRotatef(90, 1, 0, 0);
    1.34  
    1.35  	if(need_update) {
    1.36 @@ -219,6 +224,8 @@
    1.37  	cam_aspect((float)x / (float)y);
    1.38  }
    1.39  
    1.40 +int mode_scale;
    1.41 +
    1.42  void keyb(unsigned char key, int x, int y)
    1.43  {
    1.44  	static int wire;
    1.45 @@ -263,11 +270,24 @@
    1.46  		need_update = 1;
    1.47  		break;
    1.48  
    1.49 +	case 'y':
    1.50 +		mode_scale = 1;
    1.51 +		break;
    1.52 +
    1.53  	default:
    1.54  		break;
    1.55  	}
    1.56  }
    1.57  
    1.58 +void keyb_up(unsigned char key, int x, int y)
    1.59 +{
    1.60 +	switch(key) {
    1.61 +	case 'y':
    1.62 +		mode_scale = 0;
    1.63 +		break;
    1.64 +	}
    1.65 +}
    1.66 +
    1.67  int bnstate[32];
    1.68  int prev_x, prev_y;
    1.69  
    1.70 @@ -287,11 +307,15 @@
    1.71  	prev_x = x;
    1.72  	prev_y = y;
    1.73  
    1.74 -	if(bnstate[GLUT_LEFT_BUTTON]) {
    1.75 -		cam_inp_rotate(dx, dy);
    1.76 -	}
    1.77 -	if(bnstate[GLUT_RIGHT_BUTTON]) {
    1.78 -		cam_inp_zoom(dy);
    1.79 +	if(mode_scale) {
    1.80 +		yscale += dy * 0.001;
    1.81 +	} else {
    1.82 +		if(bnstate[GLUT_LEFT_BUTTON]) {
    1.83 +			cam_inp_rotate(dx, dy);
    1.84 +		}
    1.85 +		if(bnstate[GLUT_RIGHT_BUTTON]) {
    1.86 +			cam_inp_zoom(dy);
    1.87 +		}
    1.88  	}
    1.89  	glutPostRedisplay();
    1.90  }