libanim: fe017bde08bc example/test.c

libanim

view example/test.c @ 58:fe017bde08bc

implemented multiple animations per node, and blending between two animations

author	John Tsiombikas <nuclear@member.fsf.org>
date	Fri, 27 Dec 2013 06:28:43 +0200
parents	3c2428cb38f7
children	9758004136f8

line source

1 #include <stdio.h>

2 #include <stdlib.h>

3 #include <assert.h>

5 #ifndef __APPLE__

6 #include <GL/glut.h>

7 #else

8 #include <GLUT/glut.h>

9 #endif

11 #include <vmath/vmath.h>

12 #include "anim.h"

14 struct body_part {

15 vec3_t pos, pivot, sz, color;

16 } parts[] = {

17 /* position pivot size color */

18 {{0, 1, 0}, {0, -1, 0}, {1.8, 2.8, 0.8},{1, 0, 1}}, /* torso */

20 {{-0.5, -2.5, 0}, {0, 1, 0}, {0.8, 2, 0.8}, {1, 0, 0}}, /* left-upper leg */

21 {{0.5, -2.5, 0}, {0, 1, 0}, {0.8, 2, 0.8}, {0, 1, 0}}, /* right-upper leg */

23 {{0, -2.1, 0}, {0, 1, 0}, {0.8, 2, 0.8}, {1, 0.5, 0.5}}, /* left-lower leg */

24 {{0, -2.1, 0}, {0, 1, 0}, {0.8, 2, 0.8}, {0.5, 1, 0.5}}, /* right-lower leg */

26 {{0, 2.6, 0}, {0, -0.5, 0}, {1.2, 1.2, 1.2},{0, 1, 1}}, /* head */

28 {{-1.3, 0.4, 0}, {0, 1, 0}, {0.8, 2, 0.8}, {0, 0, 1}}, /* left-upper arm */

29 {{1.3, 0.4, 0}, {0, 1, 0}, {0.8, 2, 0.8}, {1, 1, 0}}, /* right-upper arm */

31 {{0, -2.1, 0}, {0, 1, 0}, {0.8, 2, 0.8}, {0.5, 0.5, 1}}, /* left-lower arm */

32 {{0, -2.1, 0}, {0, 1, 0}, {0.8, 2, 0.8}, {1, 1, 0.5}}, /* right-lower arm */

33 };

35 enum {

36 NODE_TORSO,

37 NODE_LEFT_UPPER_LEG,

38 NODE_RIGHT_UPPER_LEG,

39 NODE_LEFT_LOWER_LEG,

40 NODE_RIGHT_LOWER_LEG,

41 NODE_HEAD,

42 NODE_LEFT_UPPER_ARM,

43 NODE_RIGHT_UPPER_ARM,

44 NODE_LEFT_LOWER_ARM,

45 NODE_RIGHT_LOWER_ARM,

47 NUM_NODES

48 };

50 int init(void);

51 static void set_walk_animation(int idx);

52 static void set_jump_animation(int idx);

53 void disp(void);

54 void idle(void);

55 void reshape(int x, int y);

56 void keyb(unsigned char key, int x, int y);

57 void mouse(int bn, int state, int x, int y);

58 void motion(int x, int y);

60 float cam_theta = 200, cam_phi = 20, cam_dist = 15;

61 struct anm_node *root;

63 struct anm_node *nodes[NUM_NODES];

65 int cur_anim = 0, next_anim = 0;

66 unsigned int trans_start_tm;

68 int main(int argc, char **argv)

69 {

70 glutInitWindowSize(800, 600);

71 glutInit(&argc, argv);

72 glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);

73 glutCreateWindow("libanim example");

75 glutDisplayFunc(disp);

76 glutIdleFunc(idle);

77 glutReshapeFunc(reshape);

78 glutKeyboardFunc(keyb);

79 glutMouseFunc(mouse);

80 glutMotionFunc(motion);

82 if(init() == -1) {

83 return 1;

84 }

85 glutMainLoop();

86 return 0;

87 }

89 int init(void)

90 {

91 int i;

93 glPointSize(3);

95 glEnable(GL_DEPTH_TEST);

96 glEnable(GL_CULL_FACE);

97 glEnable(GL_LIGHTING);

98 glEnable(GL_LIGHT0);

100 for(i=0; i<NUM_NODES; i++) {

101 nodes[i] = anm_create_node();

102 anm_set_pivot(nodes[i], parts[i].pivot);

103 }

104 root = nodes[0];

105

106 anm_link_node(nodes[NODE_TORSO], nodes[NODE_HEAD]);

107 anm_link_node(nodes[NODE_TORSO], nodes[NODE_LEFT_UPPER_LEG]);

108 anm_link_node(nodes[NODE_TORSO], nodes[NODE_RIGHT_UPPER_LEG]);

109 anm_link_node(nodes[NODE_TORSO], nodes[NODE_LEFT_UPPER_ARM]);

110 anm_link_node(nodes[NODE_TORSO], nodes[NODE_RIGHT_UPPER_ARM]);

111 anm_link_node(nodes[NODE_LEFT_UPPER_LEG], nodes[NODE_LEFT_LOWER_LEG]);

112 anm_link_node(nodes[NODE_RIGHT_UPPER_LEG], nodes[NODE_RIGHT_LOWER_LEG]);

113 anm_link_node(nodes[NODE_LEFT_UPPER_ARM], nodes[NODE_LEFT_LOWER_ARM]);

114 anm_link_node(nodes[NODE_RIGHT_UPPER_ARM], nodes[NODE_RIGHT_LOWER_ARM]);

115

116 set_walk_animation(0);

117

118 anm_add_animation(root); /* recursively add another animation slot to all nodes */

119 set_jump_animation(1);

120

121 anm_use_animation(root, cur_anim);

122

123 return 0;

124 }

125

126 static void set_walk_animation(int idx)

127 {

128 int i;

129

130 anm_use_animation(root, idx);

131

132 for(i=0; i<NUM_NODES; i++) {

133 anm_set_position(nodes[i], parts[i].pos, 0);

134 anm_set_extrapolator(nodes[i], ANM_EXTRAP_REPEAT);

135 }

136

137 /* upper leg animation */

138 anm_set_rotation(nodes[NODE_LEFT_UPPER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(-15), 1, 0, 0), 0);

139 anm_set_rotation(nodes[NODE_LEFT_UPPER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(45), 1, 0, 0), 1000);

140 anm_set_rotation(nodes[NODE_LEFT_UPPER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(-15), 1, 0, 0), 2000);

141

142 anm_set_rotation(nodes[NODE_RIGHT_UPPER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(45), 1, 0, 0), 0);

143 anm_set_rotation(nodes[NODE_RIGHT_UPPER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(-15), 1, 0, 0), 1000);

144 anm_set_rotation(nodes[NODE_RIGHT_UPPER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(45), 1, 0, 0), 2000);

145

146 /* lower leg animation */

147 anm_set_rotation(nodes[NODE_LEFT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 0);

148 anm_set_rotation(nodes[NODE_LEFT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(-90), 1, 0, 0), 500);

149 anm_set_rotation(nodes[NODE_LEFT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(-10), 1, 0, 0), 1000);

150 anm_set_rotation(nodes[NODE_LEFT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 2000);

151

152 anm_set_rotation(nodes[NODE_RIGHT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(-10), 1, 0, 0), 0);

153 anm_set_rotation(nodes[NODE_RIGHT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 1000);

154 anm_set_rotation(nodes[NODE_RIGHT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(-90), 1, 0, 0), 1500);

155 anm_set_rotation(nodes[NODE_RIGHT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(-10), 1, 0, 0), 2000);

156

157 /* head animation */

158 anm_set_rotation(nodes[NODE_HEAD], quat_rotate(quat_identity(), DEG_TO_RAD(-10), 0, 1, 0), 0);

159 anm_set_rotation(nodes[NODE_HEAD], quat_rotate(quat_identity(), DEG_TO_RAD(10), 0, 1, 0), 1000);

160 anm_set_rotation(nodes[NODE_HEAD], quat_rotate(quat_identity(), DEG_TO_RAD(-10), 0, 1, 0), 2000);

161

162 /* torso animation */

163 anm_set_rotation(nodes[NODE_TORSO], quat_rotate(quat_identity(), DEG_TO_RAD(-8), 1, 0, 0), 0);

164 anm_set_rotation(nodes[NODE_TORSO], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 500);

165 anm_set_rotation(nodes[NODE_TORSO], quat_rotate(quat_identity(), DEG_TO_RAD(-8), 1, 0, 0), 1000);

166 anm_set_rotation(nodes[NODE_TORSO], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 1500);

167 anm_set_rotation(nodes[NODE_TORSO], quat_rotate(quat_identity(), DEG_TO_RAD(-8), 1, 0, 0), 2000);

168

169 /* upper arm animation */

170 anm_set_rotation(nodes[NODE_LEFT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(30), 1, 0, 0), 0);

171 anm_set_rotation(nodes[NODE_LEFT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(-25), 1, 0, 0), 1000);

172 anm_set_rotation(nodes[NODE_LEFT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(30), 1, 0, 0), 2000);

173

174 anm_set_rotation(nodes[NODE_RIGHT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(-25), 1, 0, 0), 0);

175 anm_set_rotation(nodes[NODE_RIGHT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(30), 1, 0, 0), 1000);

176 anm_set_rotation(nodes[NODE_RIGHT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(-25), 1, 0, 0), 2000);

177

178 /* lower arm animation */

179 anm_set_rotation(nodes[NODE_LEFT_LOWER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(40), 1, 0, 0), 0);

180 anm_set_rotation(nodes[NODE_LEFT_LOWER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 1000);

181 anm_set_rotation(nodes[NODE_LEFT_LOWER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 1500);

182 anm_set_rotation(nodes[NODE_LEFT_LOWER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(40), 1, 0, 0), 2000);

183

184 anm_set_rotation(nodes[NODE_RIGHT_LOWER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 0);

185 anm_set_rotation(nodes[NODE_RIGHT_LOWER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 500);

186 anm_set_rotation(nodes[NODE_RIGHT_LOWER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(40), 1, 0, 0), 1000);

187 anm_set_rotation(nodes[NODE_RIGHT_LOWER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 2000);

188 }

189

190 static void set_jump_animation(int idx)

191 {

192 int i;

193

194 anm_use_animation(root, idx);

195

196 for(i=0; i<NUM_NODES; i++) {

197 anm_set_position(nodes[i], parts[i].pos, 0);

198 anm_set_extrapolator(nodes[i], ANM_EXTRAP_REPEAT);

199 }

200

201 anm_set_rotation(nodes[NODE_LEFT_UPPER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 0);

202 anm_set_rotation(nodes[NODE_LEFT_UPPER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(40), 1, 0, 0), 1000);

203 anm_set_rotation(nodes[NODE_LEFT_UPPER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 1500);

204 anm_set_rotation(nodes[NODE_LEFT_UPPER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 2000);

205 anm_set_rotation(nodes[NODE_RIGHT_UPPER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 0);

206 anm_set_rotation(nodes[NODE_RIGHT_UPPER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(40), 1, 0, 0), 1000);

207 anm_set_rotation(nodes[NODE_RIGHT_UPPER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 1500);

208 anm_set_rotation(nodes[NODE_RIGHT_UPPER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 2000);

209

210 anm_set_rotation(nodes[NODE_LEFT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 0);

211 anm_set_rotation(nodes[NODE_LEFT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(-80), 1, 0, 0), 1000);

212 anm_set_rotation(nodes[NODE_LEFT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 1500);

213 anm_set_rotation(nodes[NODE_LEFT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 2000);

214 anm_set_rotation(nodes[NODE_RIGHT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 0);

215 anm_set_rotation(nodes[NODE_RIGHT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(-80), 1, 0, 0), 1000);

216 anm_set_rotation(nodes[NODE_RIGHT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 1500);

217 anm_set_rotation(nodes[NODE_RIGHT_LOWER_LEG], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 2000);

218

219 anm_set_position(nodes[NODE_TORSO], parts[NODE_TORSO].pos, 0);

220 anm_set_position(nodes[NODE_TORSO], v3_add(parts[NODE_TORSO].pos, v3_cons(0, -1, 0)), 1000);

221 anm_set_position(nodes[NODE_TORSO], v3_add(parts[NODE_TORSO].pos, v3_cons(0, 2, 0)), 1500);

222 anm_set_position(nodes[NODE_TORSO], parts[NODE_TORSO].pos, 2000);

223

224 anm_set_rotation(nodes[NODE_LEFT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 0);

225 anm_set_rotation(nodes[NODE_LEFT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(-20), 1, 0, 0), 1000);

226 anm_set_rotation(nodes[NODE_LEFT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(20), 1, 0, 0), 1200);

227 anm_set_rotation(nodes[NODE_LEFT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(170), 1, 0, 0), 1500);

228 anm_set_rotation(nodes[NODE_LEFT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 2000);

229

230 anm_set_rotation(nodes[NODE_RIGHT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 0);

231 anm_set_rotation(nodes[NODE_RIGHT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(-20), 1, 0, 0), 1000);

232 anm_set_rotation(nodes[NODE_RIGHT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(20), 1, 0, 0), 1200);

233 anm_set_rotation(nodes[NODE_RIGHT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(170), 1, 0, 0), 1500);

234 anm_set_rotation(nodes[NODE_RIGHT_UPPER_ARM], quat_rotate(quat_identity(), DEG_TO_RAD(0), 1, 0, 0), 2000);

235 }

236

237 void disp(void)

238 {

239 int i;

240 float lpos[] = {-1, 1, 1.5, 0};

241 unsigned int msec = glutGet(GLUT_ELAPSED_TIME);

242

243 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

244

245 glMatrixMode(GL_MODELVIEW);

246 glLoadIdentity();

247

248 glLightfv(GL_LIGHT0, GL_POSITION, lpos);

249

250 glTranslatef(0, 0, -cam_dist);

251 glRotatef(cam_phi, 1, 0, 0);

252 glRotatef(cam_theta, 0, 1, 0);

253

254 if(cur_anim != next_anim) {

255 float t = (msec - trans_start_tm) / 1000.0;

256

257 if(t >= 1.0) {

258 t = 1.0;

259 cur_anim = next_anim;

260 anm_use_animation(root, cur_anim);

261 } else {

262 anm_use_animations(root, cur_anim, next_anim, t);

263 }

264 }

265

266 /* first render a character with bottom-up lazy matrix calculation */

267 glPushMatrix();

268 glTranslatef(-2.5, 0, 0);

269

270 for(i=0; i<NUM_NODES; i++) {

271 float color[4] = {0, 0, 0, 1};

272 mat4_t xform, xform_transp;

273

274 color[0] = parts[i].color.x;

275 color[1] = parts[i].color.y;

276 color[2] = parts[i].color.z;

277

278 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, color);

279 glColor4fv(color);

280

281 anm_get_matrix(nodes[i], xform, msec);

282 m4_transpose(xform_transp, xform);

283

284 glPushMatrix();

285 glMultMatrixf((float*)xform_transp);

286

287 glScalef(parts[i].sz.x, parts[i].sz.y, parts[i].sz.z);

288 glutSolidCube(1.0);

289

290 glPopMatrix();

291 }

292 glPopMatrix();

293

294 /* then render another one using simple top-down recursive evaluation */

295 glPushMatrix();

296 glTranslatef(2.5, 0, 0);

297

298 anm_eval(nodes[NODE_TORSO], msec); /* calculate all matrices recursively */

299

300 for(i=0; i<NUM_NODES; i++) {

301 float color[4] = {0, 0, 0, 1};

302 mat4_t xform_transp;

303

304 color[0] = parts[i].color.x;

305 color[1] = parts[i].color.y;

306 color[2] = parts[i].color.z;

307

308 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, color);

309 glColor4fv(color);

310

311 m4_transpose(xform_transp, nodes[i]->matrix);

312

313 glPushMatrix();

314 glMultMatrixf((float*)xform_transp);

315

316 glScalef(parts[i].sz.x, parts[i].sz.y, parts[i].sz.z);

317 glutSolidCube(1.0);

318

319 glPopMatrix();

320 }

321 glPopMatrix();

322

323 glutSwapBuffers();

324 assert(glGetError() == GL_NO_ERROR);

325 }

326

327 void idle(void)

328 {

329 glutPostRedisplay();

330 }

331

332 void reshape(int x, int y)

333 {

334 glViewport(0, 0, x, y);

335

336 glMatrixMode(GL_PROJECTION);

337 glLoadIdentity();

338 gluPerspective(45.0, (float)x / (float)y, 0.5, 500.0);

339 }

340

341 void keyb(unsigned char key, int x, int y)

342 {

343 switch(key) {

344 case 27:

345 exit(0);

346

347 case ' ':

348 next_anim = (cur_anim + 1) % 2;

349 trans_start_tm = glutGet(GLUT_ELAPSED_TIME);

350 break;

351 }

352 }

353

354 int bnstate[64];

355 int prev_x, prev_y;

356

357 void mouse(int bn, int state, int x, int y)

358 {

359 int idx = bn - GLUT_LEFT_BUTTON;

360 int down = state == GLUT_DOWN ? 1 : 0;

361

362 bnstate[idx] = down;

363

364 prev_x = x;

365 prev_y = y;

366 }

367

368 void motion(int x, int y)

369 {

370 int dx = x - prev_x;

371 int dy = y - prev_y;

372 prev_x = x;

373 prev_y = y;

374

375 if(bnstate[0]) {

376 cam_theta += dx * 0.5;

377 cam_phi += dy * 0.5;

378

379 if(cam_phi < -90) {

380 cam_phi = -90;

381 }

382 if(cam_phi > 90) {

383 cam_phi = 90;

384 }

385 glutPostRedisplay();

386 }

387 if(bnstate[2]) {

388 cam_dist += dy * 0.1;

389 if(cam_dist < 0.0) {

390 cam_dist = 0.0;

391 }

392 glutPostRedisplay();

393 }

394 }