glviewvol

annotate src/dicomview.cc @ 4:04330eb80b36

find changesets by author, revision, files, or words in the commit message
lots of stuff
author John Tsiombikas <nuclear@member.fsf.org>
date Mon, 29 Dec 2014 05:41:36 +0200
parents 32c4a7160350
children f22be47a3572
rev   line source
nuclear@3 1 #include <stdio.h>
nuclear@4 2 #include <stdlib.h>
nuclear@0 3 #include "opengl.h"
nuclear@0 4 #include "dicomview.h"
nuclear@1 5 #include "rend_fast.h"
nuclear@3 6 #include "opt.h"
nuclear@3 7 #include "volume.h"
nuclear@4 8 #include "xfer_view.h"
nuclear@0 9
nuclear@1 10 static int win_width, win_height;
nuclear@0 11 static float cam_theta, cam_phi, cam_dist = 6;
nuclear@4 12 static int splitter_y = -1;
nuclear@4 13
nuclear@4 14 #define SPLITTER_WIDTH 5
nuclear@0 15
nuclear@1 16 static Renderer *rend;
nuclear@3 17 static Volume *vol;
nuclear@1 18
nuclear@0 19 extern "C" {
nuclear@0 20
nuclear@0 21 int init()
nuclear@0 22 {
nuclear@3 23 if(!opt.fname) {
nuclear@3 24 fprintf(stderr, "you must specify the volume data filename\n");
nuclear@1 25 return -1;
nuclear@1 26 }
nuclear@1 27
nuclear@3 28 switch(opt.rend_type) {
nuclear@3 29 case REND_FAST:
nuclear@3 30 rend = new RendererFast;
nuclear@3 31 break;
nuclear@3 32 default:
nuclear@3 33 return -1;
nuclear@3 34 }
nuclear@3 35
nuclear@3 36 if(!rend->init()) {
nuclear@3 37 fprintf(stderr, "renderer initialization failed\n");
nuclear@3 38 return -1;
nuclear@3 39 }
nuclear@3 40
nuclear@3 41 VoxelVolume *voxvol = new VoxelVolume;
nuclear@3 42 if(!voxvol->load(opt.fname)) {
nuclear@3 43 fprintf(stderr, "failed to load volume data from: %s\n", opt.fname);
nuclear@3 44 return -1;
nuclear@3 45 }
nuclear@3 46 vol = voxvol;
nuclear@3 47 rend->set_volume(vol);
nuclear@3 48
nuclear@4 49 if(!xfview_init(rend)) {
nuclear@4 50 return -1;
nuclear@4 51 }
nuclear@4 52
nuclear@1 53 return 0;
nuclear@0 54 }
nuclear@0 55
nuclear@0 56 void cleanup()
nuclear@0 57 {
nuclear@4 58 xfview_destroy();
nuclear@4 59
nuclear@1 60 rend->destroy();
nuclear@1 61 delete rend;
nuclear@3 62 delete vol;
nuclear@0 63 }
nuclear@0 64
nuclear@0 65 void ev_display()
nuclear@0 66 {
nuclear@0 67 glClear(GL_COLOR_BUFFER_BIT);
nuclear@1 68
nuclear@4 69 // render the main view
nuclear@4 70 glViewport(0, win_height - splitter_y, win_width, splitter_y);
nuclear@4 71
nuclear@4 72 glMatrixMode(GL_PROJECTION);
nuclear@4 73 glLoadIdentity();
nuclear@4 74 gluPerspective(50.0, (float)win_width / (float)splitter_y, 0.1, 100.0);
nuclear@4 75
nuclear@4 76 glMatrixMode(GL_MODELVIEW);
nuclear@4 77 glLoadIdentity();
nuclear@4 78 glTranslatef(0, 0, -cam_dist);
nuclear@4 79 glRotatef(cam_phi, 1, 0, 0);
nuclear@4 80 glRotatef(cam_theta, 0, 1, 0);
nuclear@4 81
nuclear@1 82 rend->update(0);
nuclear@1 83 rend->render();
nuclear@4 84
nuclear@4 85 // draw the transfer function view
nuclear@4 86 glViewport(0, 0, win_width, win_height - splitter_y);
nuclear@4 87
nuclear@4 88 xfview_draw();
nuclear@4 89
nuclear@4 90 // draw the GUI
nuclear@4 91 glViewport(0, 0, win_width, win_height);
nuclear@4 92
nuclear@4 93 glMatrixMode(GL_PROJECTION);
nuclear@4 94 glLoadIdentity();
nuclear@4 95 glOrtho(0, win_width, win_height, 0, -1, 1);
nuclear@4 96
nuclear@4 97 glMatrixMode(GL_MODELVIEW);
nuclear@4 98 glLoadIdentity();
nuclear@4 99
nuclear@4 100 glBegin(GL_QUADS);
nuclear@4 101 glColor3f(1, 1, 1);
nuclear@4 102 glVertex2f(0, splitter_y + SPLITTER_WIDTH / 2);
nuclear@4 103 glVertex2f(win_width, splitter_y + SPLITTER_WIDTH / 2);
nuclear@4 104 glVertex2f(win_width, splitter_y - SPLITTER_WIDTH / 2);
nuclear@4 105 glVertex2f(0, splitter_y - SPLITTER_WIDTH / 2);
nuclear@4 106 glEnd();
nuclear@4 107
nuclear@4 108 swap_buffers();
nuclear@0 109 }
nuclear@0 110
nuclear@0 111 void ev_reshape(int x, int y)
nuclear@0 112 {
nuclear@4 113 if(splitter_y < 0) { // not initialized yet
nuclear@4 114 splitter_y = (int)(y * 0.85);
nuclear@4 115 } else {
nuclear@4 116 // calculate where the splitter was relative to the window height
nuclear@4 117 // and based on that, it's new position
nuclear@4 118 float split = (float)splitter_y / (float)win_height;
nuclear@4 119 splitter_y = (int)(y * split);
nuclear@4 120 }
nuclear@4 121
nuclear@0 122 win_width = x;
nuclear@0 123 win_height = y;
nuclear@0 124
nuclear@1 125 glViewport(0, 0, x, y);
nuclear@4 126 if(rend) {
nuclear@4 127 rend->reshape(x, y);
nuclear@4 128 }
nuclear@0 129 }
nuclear@0 130
nuclear@1 131 void ev_keyboard(int key, int press, int x, int y)
nuclear@1 132 {
nuclear@1 133 if(press) {
nuclear@1 134 switch(key) {
nuclear@1 135 case 27:
nuclear@1 136 quit();
nuclear@1 137 }
nuclear@1 138 }
nuclear@1 139 }
nuclear@1 140
nuclear@4 141 static bool bnstate[8];
nuclear@4 142 static int prev_x, prev_y;
nuclear@4 143
nuclear@4 144 #define ON_SPLITTER(y) (abs(y - splitter_y) <= SPLITTER_WIDTH / 2)
nuclear@4 145 static bool splitter_dragging;
nuclear@4 146
nuclear@1 147 void ev_mouse_button(int bn, int press, int x, int y)
nuclear@1 148 {
nuclear@4 149 bnstate[bn] = press != 0;
nuclear@4 150 prev_x = x;
nuclear@4 151 prev_y = y;
nuclear@4 152
nuclear@4 153 splitter_dragging = bn == 0 && press && ON_SPLITTER(y);
nuclear@4 154
nuclear@4 155 if(!splitter_dragging && y > splitter_y) {
nuclear@4 156 xfview_button(bn, press, x, y);
nuclear@4 157 }
nuclear@1 158 }
nuclear@1 159
nuclear@1 160 void ev_mouse_motion(int x, int y)
nuclear@1 161 {
nuclear@4 162 int dx = x - prev_x;
nuclear@4 163 int dy = y - prev_y;
nuclear@4 164 prev_x = x;
nuclear@4 165 prev_y = y;
nuclear@4 166
nuclear@4 167 if((dx | dy) == 0) return;
nuclear@4 168
nuclear@4 169 if(splitter_dragging) {
nuclear@4 170 splitter_y += dy;
nuclear@4 171 redisplay();
nuclear@4 172 return;
nuclear@4 173 }
nuclear@4 174
nuclear@4 175 if(y > splitter_y) {
nuclear@4 176 xfview_motion(x, y);
nuclear@4 177 return;
nuclear@4 178 }
nuclear@4 179
nuclear@4 180 // main view motion handling
nuclear@4 181 if(bnstate[0]) {
nuclear@4 182 cam_theta += dx * 0.5;
nuclear@4 183 cam_phi += dy * 0.5;
nuclear@4 184
nuclear@4 185 if(cam_phi < -90) cam_phi = -90;
nuclear@4 186 if(cam_phi > 90) cam_phi = 90;
nuclear@4 187 redisplay();
nuclear@4 188 }
nuclear@4 189 if(bnstate[2]) {
nuclear@4 190 cam_dist += dy * 0.1;
nuclear@4 191
nuclear@4 192 if(cam_dist < 0.0) cam_dist = 0.0;
nuclear@4 193 redisplay();
nuclear@4 194 }
nuclear@1 195 }
nuclear@0 196
nuclear@0 197 } // extern "C"