1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/hullsdr/hullsdr_post.c	Wed Oct 19 06:23:32 2011 +0300
     1.3 @@ -0,0 +1,177 @@
     1.4 +#include <math.h>
     1.5 +#include <assert.h>
     1.6 +#include <GL/glut.h>
     1.7 +#include <GL/freeglut_ext.h>
     1.8 +#include <imago2.h>
     1.9 +#include <drawtext.h>
    1.10 +#include <dsys.h>
    1.11 +
    1.12 +static void disp(void);
    1.13 +static void draw_text(void);
    1.14 +static void reshape(int x, int y);
    1.15 +
    1.16 +static struct img_pixmap *curfrm;
    1.17 +static int nfrm;
    1.18 +static int xsz = -1, ysz;
    1.19 +static float tsec;
    1.20 +
    1.21 +static struct dsys_demo *script;
    1.22 +
    1.23 +static struct dtx_font *font;
    1.24 +
    1.25 +static struct {
    1.26 +	const char *name, *caption;
    1.27 +	struct dsys_event *ev;
    1.28 +} events[] = {
    1.29 +	{"diffuse", "diffuse only - 1 light", 0},
    1.30 +	{"diffuse2", "diffuse only - 2 lights", 0},
    1.31 +	{"vmanip", "vertex manipulation", 0},
    1.32 +	{"2tone", "two-tone paint", 0},
    1.33 +	{"specular2", "full phong - 2 lights", 0},
    1.34 +	{"celshade", "cel shading", 0},
    1.35 +	{"sphmap", "reflection - spherical env. map", 0},
    1.36 +	{"cubemap", "reflection - cubic env. map", 0},
    1.37 +	{"refract", "relfection & refraction - cubic env. map w/fresnel", 0},
    1.38 +	{"distort1", "image distortion", 0},
    1.39 +	{"blur", "blur", 0},
    1.40 +	{"distort2", "image distortion (again)", 0},
    1.41 +	{0, 0, 0}
    1.42 +};
    1.43 +
    1.44 +
    1.45 +int init(void)
    1.46 +{
    1.47 +	int i, argc = 1;
    1.48 +	char *argv[] = {"./vpost", 0};
    1.49 +
    1.50 +	if(!(font = dtx_open_font("linux-libertine.ttf", 32))) {
    1.51 +		fprintf(stderr, "failed to open font\n");
    1.52 +		return -1;
    1.53 +	}
    1.54 +
    1.55 +	if(!(script = dsys_open("script"))) {
    1.56 +		fprintf(stderr, "failed to open script\n");
    1.57 +		return -1;
    1.58 +	}
    1.59 +
    1.60 +	for(i=0; events[i].name; i++) {
    1.61 +		events[i].ev = dsys_event(script, events[i].name);
    1.62 +	}
    1.63 +
    1.64 +	glutInit(&argc, argv);
    1.65 +	glutInitWindowSize(32, 32);
    1.66 +	glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
    1.67 +
    1.68 +	glutCreateWindow("foo");
    1.69 +
    1.70 +	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
    1.71 +
    1.72 +	glutDisplayFunc(disp);
    1.73 +	glutReshapeFunc(reshape);
    1.74 +	return 0;
    1.75 +}
    1.76 +
    1.77 +void shutdown(void)
    1.78 +{
    1.79 +	printf("shutdown called\n");
    1.80 +}
    1.81 +
    1.82 +int process(struct img_pixmap *frame, int frm_num, float sec)
    1.83 +{
    1.84 +	curfrm = frame;
    1.85 +	nfrm = frm_num;
    1.86 +	tsec = sec;
    1.87 +
    1.88 +	if(frame->width != xsz || frame->height != ysz) {
    1.89 +		glutReshapeWindow(frame->width, frame->height);
    1.90 +	}
    1.91 +	glutPostRedisplay();
    1.92 +
    1.93 +	while(curfrm) {
    1.94 +		glutMainLoopEvent();
    1.95 +	}
    1.96 +	return 0;
    1.97 +}
    1.98 +
    1.99 +static void disp(void)
   1.100 +{
   1.101 +	assert(curfrm);
   1.102 +	glClear(GL_COLOR_BUFFER_BIT);
   1.103 +
   1.104 +	dsys_update(script, dsys_msec_to_dtime(nfrm));
   1.105 +
   1.106 +	glDrawPixels(xsz, ysz, GL_RGB, GL_UNSIGNED_BYTE, curfrm->pixels);
   1.107 +
   1.108 +	draw_text();
   1.109 +
   1.110 +	glFlush();
   1.111 +	glReadPixels(0, 0, xsz, ysz, GL_RGB, GL_UNSIGNED_BYTE, curfrm->pixels);
   1.112 +
   1.113 +	glutSwapBuffers();
   1.114 +	curfrm = 0;
   1.115 +
   1.116 +	assert(glGetError() == GL_NO_ERROR);
   1.117 +}
   1.118 +
   1.119 +static float fade(float x)
   1.120 +{
   1.121 +	x = 1.0 - (cos((x) * M_PI * 2.0) * 0.5 + 0.5);
   1.122 +	x *= 10.0f;
   1.123 +
   1.124 +	return x > 1.0 ? 1.0 : x;
   1.125 +}
   1.126 +
   1.127 +static void caption(const char *text, struct dsys_event *ev)
   1.128 +{
   1.129 +	float t = fade(dsys_event_value(ev));
   1.130 +
   1.131 +	if(t < (1.0f / 255.0f)) {
   1.132 +		return;
   1.133 +	}
   1.134 +
   1.135 +	glMatrixMode(GL_MODELVIEW);
   1.136 +	glPushMatrix();
   1.137 +	glTranslatef(0, 40 * t - 20, 0);
   1.138 +
   1.139 +	glBegin(GL_QUADS);
   1.140 +	glColor4f(0.7, 0.2, 0.1, t);
   1.141 +	glVertex2f(0, -10);
   1.142 +	glVertex2f(xsz, -10);
   1.143 +	glVertex2f(xsz, 30);
   1.144 +	glVertex2f(0, 30);
   1.145 +	glEnd();
   1.146 +
   1.147 +	glTranslatef(20, 0, 0);
   1.148 +
   1.149 +	glColor4f(1, 1, 1, t);
   1.150 +	dtx_string(text);
   1.151 +
   1.152 +	glPopMatrix();
   1.153 +}
   1.154 +
   1.155 +
   1.156 +static void draw_text(void)
   1.157 +{
   1.158 +	int i;
   1.159 +	dtx_use_font(font, 32);
   1.160 +
   1.161 +	glPushAttrib(GL_ENABLE_BIT);
   1.162 +	glEnable(GL_BLEND);
   1.163 +
   1.164 +	for(i=0; events[i].name; i++) {
   1.165 +		caption(events[i].caption, events[i].ev);
   1.166 +	}
   1.167 +
   1.168 +	glPopAttrib();
   1.169 +}
   1.170 +
   1.171 +static void reshape(int x, int y)
   1.172 +{
   1.173 +	xsz = x;
   1.174 +	ysz = y;
   1.175 +
   1.176 +	glViewport(0, 0, x, y);
   1.177 +	glMatrixMode(GL_PROJECTION);
   1.178 +	glLoadIdentity();
   1.179 +	glOrtho(0, x, y, 0, -1, 1);
   1.180 +}