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view3d.c
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view3d.c
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#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "hkpriv.h"
void hk_v3d_opt_init(struct hk_v3d_opt *opt)
{
opt->width = 780;
opt->line_width = 2.0f;
opt->bead_radius = 0.015f;
}
#ifdef HAVE_GL
#ifdef __APPLE__
#include <GLUT/glut.h>
#else
#include <GL/glut.h>
#endif
struct {
const struct hk_v3d_opt *opt;
struct hk_bmap *m;
fvec3_t *color;
float *alpha;
krng_t rng;
int n_hl;
int is_white;
int use_ball;
char **hl;
float feat_lo, feat_hi;
int feat_color;
} global;
static void prep_color(const struct hk_sdict *d);
static inline void set_bead_color(int chr, int bid)
{
GLfloat c[4];
c[3] = global.alpha[chr];
if (global.feat_color && global.m->feat && bid >= 0) {
float x = global.m->feat[bid];
if (x < global.feat_lo) x = global.feat_lo;
if (x > global.feat_hi) x = global.feat_hi;
x = (x - global.feat_lo) / (global.feat_hi - global.feat_lo);
c[0] = 1.0f - x, c[1] = x, c[2] = 1.0f - x;
} else {
c[0] = global.color[chr][0], c[1] = global.color[chr][1], c[2] = global.color[chr][2];
}
glColor4fv(c);
if (global.use_ball)
glMaterialfv(GL_FRONT, GL_DIFFUSE, c);
}
static void cb_draw(void)
{
struct hk_bmap *m = global.m;
int32_t i;
if (global.is_white) glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
else glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
glLineWidth(global.opt->line_width);
for (i = 0; i < m->d->n; ++i) {
int32_t j, cnt = (int32_t)m->offcnt[i];
int32_t off = m->offcnt[i] >> 32;
if (global.alpha[i] < 0.9) continue;
set_bead_color(i, -1);
glBegin(GL_LINE_STRIP);
for (j = 0; j < cnt; ++j) {
if (global.feat_color) set_bead_color(i, off + j);
glVertex3f(m->x[off+j][0], m->x[off+j][1], m->x[off+j][2]);
}
glEnd();
if (global.use_ball) {
for (j = 0; j < cnt; ++j) {
if (global.feat_color) set_bead_color(i, off + j);
glPushMatrix();
glTranslatef(m->x[off+j][0], m->x[off+j][1], m->x[off+j][2]);
glutSolidSphere(global.opt->bead_radius, 6, 5);
glPopMatrix();
}
}
}
for (i = 0; i < m->d->n; ++i) {
int32_t j, cnt = (int32_t)m->offcnt[i];
int32_t off = m->offcnt[i] >> 32;
if (global.alpha[i] > 0.9) continue;
set_bead_color(i, -1);
glBegin(GL_LINE_STRIP);
for (j = 0; j < cnt; ++j) {
if (global.feat_color) set_bead_color(i, off + j);
glVertex3f(m->x[off+j][0], m->x[off+j][1], m->x[off+j][2]);
}
glEnd();
}
glFlush();
glutSwapBuffers();
}
static void rotate(int axis, float x)
{
const float step = 5.0f;
double mat_modview[16], mat_proj[16];
double xx, yy, zz, s;
int view_point[4];
glGetDoublev(GL_MODELVIEW_MATRIX, mat_modview);
glGetDoublev(GL_PROJECTION_MATRIX, mat_proj);
glGetIntegerv(GL_VIEWPORT, view_point);
gluProject(0.0, 0.0, 0.0, mat_modview, mat_proj, view_point, &xx, &yy, &zz);
s = step * x;
if (axis == 0) gluUnProject(xx + 10.0, yy, zz, mat_modview, mat_proj, view_point, &xx, &yy, &zz);
else if (axis == 1) gluUnProject(xx, yy + 10.0, zz, mat_modview, mat_proj, view_point, &xx, &yy, &zz);
else if (axis == 2) gluUnProject(xx, yy, zz + 10.0, mat_modview, mat_proj, view_point, &xx, &yy, &zz);
glMatrixMode(GL_MODELVIEW);
glRotatef(s, xx, yy, zz);
cb_draw();
}
static void cb_key(unsigned char key, int x, int y)
{
if (key == 27 || key == 'q' || key == 'Q') {
hk_bmap_destroy(global.m);
free(global.color);
exit(0);
} else if (key == 'c' || key == 'C') {
prep_color(global.m->d);
cb_draw();
} else if (key == 'f' || key == 'F') {
global.feat_color = !global.feat_color;
if (global.m->feat == 0) global.feat_color = 0;
cb_draw();
} else if (key == '>' || key == '.') {
glMatrixMode(GL_PROJECTION);
gluLookAt(0, 0, 0.05, 0, 0, -1.0, 0, 1, 0);
cb_draw();
} else if (key == '<' || key == ',') {
glMatrixMode(GL_PROJECTION);
gluLookAt(0, 0, -0.05, 0, 0, -1.0, 0, 1, 0);
cb_draw();
} else if (key == '0') {
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
cb_draw();
} else if (key == '[') {
rotate(2, 1.0f);
} else if (key == ']') {
rotate(2, -1.0f);
} else if (key == 'b' || key == 'B') {
global.use_ball = !global.use_ball;
if (global.use_ball) {
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
} else {
glDisable(GL_LIGHTING);
glDisable(GL_LIGHT0);
}
cb_draw();
} else if (key == 'z' || key == 'Z') {
global.is_white = !global.is_white;
cb_draw();
}
}
static void cb_special_key(int key, int x, int y)
{
if (key == GLUT_KEY_UP) rotate(0, 1.0f);
else if (key == GLUT_KEY_DOWN) rotate(0, -1.0f);
else if (key == GLUT_KEY_LEFT) rotate(1, 1.0f);
else if (key == GLUT_KEY_RIGHT) rotate(1, -1.0f);
}
void hk_v3d_prep(int *argc, char *argv[])
{
glutInit(argc, argv);
glutInitDisplayMode(GLUT_RGB|GLUT_DEPTH|GLUT_ALPHA|GLUT_DOUBLE);
}
static void prep_color(const struct hk_sdict *d)
{
int i, j;
global.color = CALLOC(fvec3_t, d->n);
global.alpha = CALLOC(float, d->n);
for (i = 0; i < d->n; ++i) {
global.color[i][0] = kr_drand_r(&global.rng);
global.color[i][1] = kr_drand_r(&global.rng);
global.color[i][2] = kr_drand_r(&global.rng);
if (global.n_hl > 0) {
global.alpha[i] = 0.15f;
for (j = 0; j < global.n_hl; ++j)
if (strcmp(d->name[i], global.hl[j]) == 0)
global.alpha[i] = 1.0f;
} else global.alpha[i] = 1.0f;
}
}
static void split_hl(const char *hl)
{
const char *p, *q;
int k;
for (q = hl, k = 0; *q; ++q)
if (*q == ',') ++k;
global.n_hl = k + 1;
global.hl = CALLOC(char*, global.n_hl);
for (p = q = hl, k = 0;; ++q) {
if (*q == 0 || *q == ',') {
global.hl[k] = CALLOC(char, q - p + 1);
memcpy(global.hl[k], p, q - p);
++k;
p = q + 1;
if (*q == 0) break;
}
}
}
static void init_gl(void)
{
GLfloat light_position[] = { 1.0, 1.0, -2.0, 0.0 };
GLfloat white_light[] = { 1.0, 1.0, 1.0, 1.0 };
glLightfv(GL_LIGHT0, GL_POSITION, light_position);
glLightfv(GL_LIGHT0, GL_DIFFUSE, white_light);
glLightfv(GL_LIGHT0, GL_AMBIENT, white_light);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
}
void hk_v3d_view(struct hk_bmap *m, const struct hk_v3d_opt *opt, int color_seed, const char *hl)
{
memset(&global, 0, sizeof(global));
global.m = m;
global.opt = opt;
global.is_white = 1;
kr_srand_r(&global.rng, color_seed);
hk_fdg_normalize(m);
if (hl) split_hl(hl);
prep_color(m->d);
if (m->feat) {
float *a;
int i;
a = CALLOC(float, m->n_beads);
for (i = 0; i < m->n_beads; ++i)
a[i] = m->feat[i];
global.feat_lo = ks_ksmall_float(m->n_beads, a, (int)(m->n_beads * 0.05f));
global.feat_hi = ks_ksmall_float(m->n_beads, a, (int)(m->n_beads * 0.95f));
if (hk_verbose >= 3)
fprintf(stderr, "[M::%s] low = %f, high = %f\n", __func__, global.feat_lo, global.feat_hi);
global.feat_color = 1;
}
glutInitWindowSize(opt->width, opt->width);
glutCreateWindow("View3D");
init_gl();
glutDisplayFunc(cb_draw);
glutKeyboardFunc(cb_key);
glutSpecialFunc(cb_special_key);
glutMainLoop();
}
#endif