static uint32_t draw_image(struct vo *vo, mp_image_t *mpi)
{
assert(mpi->stride[0] == image_width * 3);
caca_dither_bitmap(canvas, 0, 0, screen_w, screen_h, dither,
mpi->planes[0]);
return true;
}
static void
_increment_frame (lw6sys_context_t * sys_context, _mod_caca_context_t * caca_context, caca_font_t * fo, caca_dither_t * di, uint8_t * buff)
{
int wc, hc;
static caca_font_t *f = NULL;
static caca_dither_t *d = NULL;
static uint8_t *buf = NULL;
if (fo != NULL)
f = fo;
if (di != NULL)
d = di;
if (buff != NULL)
buf = buff;
hc = caca_get_canvas_height (caca_context->canvas);
wc = caca_get_canvas_width (caca_context->canvas);
_plasma (sys_context, UPDATE, caca_context->canvas);
_plasma (sys_context, RENDER, caca_context->canvas);
caca_set_color_ansi (caca_context->canvas, CACA_WHITE, CACA_BLACK);
caca_dither_bitmap (caca_context->canvas, (wc - (10 * caca_get_font_width (f))) / 2, (hc - caca_get_font_height (f)) / 2, wc, hc, d, buf);
caca_put_str (caca_context->canvas, wc - 8, 0, "mod-caca");
caca_put_str (caca_context->canvas, 0, 0, "PFA Epitech 2012-2013");
caca_put_str (caca_context->canvas, (wc - 41) / 2, hc - 1, "by france_a, clavel_r, lemonn_k, vougie_c");
caca_refresh_display (caca_context->display);
frame++;
}
JNIEXPORT void JNICALL
Java_org_zoy_caca_Canvas_canvasDitherBitmap(JNIEnv *env, jclass cls, jlong ptr, jint x, jint y,
jint w, jint h, jlong dither_ptr, jbyteArray pixels)
{
jbyte *elems = (*env)->GetByteArrayElements(env, pixels, 0);
jsize size = (*env)->GetArrayLength(env, pixels);
caca_dither_bitmap((caca_canvas_t *)ptr, x, y, w, h, (caca_dither_t *)dither_ptr, elems);
(*env)->ReleaseByteArrayElements(env, pixels, elems, 0);
}
void gui_console_update(unsigned char *p, int len)
{
caca_dither_bitmap(
c_ui.cv,
0, 0,
c_ui.ww, c_ui.wh,
c_ui.im,
p);
caca_refresh_display(c_ui.dp);
}
int main(void)
{
// R G B A
uint32_t pattern = 0xFFFF00FF;
#ifdef __APPLE__
memset_pattern4(gfx, &pattern, sizeof(gfx));
#else
wmemset(gfx, pattern, (64*32) * sizeof(char));
#endif
gfx[0] = 0xFF0000FF; // R
gfx[1] = 0x00FF00FF; // G
gfx[2] = 0x0000FFFF; // B
gfx[63] = 0xFF0000FF; // R
gfx[64*31] =0x00FF00FF; // G
int x = 64, y = 32;
gfx[(y-1)*64+(x-1)] = 0x0000FFFF; // B
caca_canvas_t *cv; caca_display_t *dp; caca_event_t ev;
dp = caca_create_display(NULL);
if(!dp)
return 1;
/*
printf("Current driver: %s\n", caca_get_display_driver(dp));
char **drivers = caca_get_display_driver_list();
caca_free_display(dp);
while(*drivers != NULL) {
printf("%s\n", *drivers);
drivers++;
}
exit(0);*/
cv = caca_get_canvas(dp);
caca_dither_t *dither = caca_create_dither(32, 64, 32, 4*64,
0xFF000000,
0x00FF0000,
0x0000FF00,
0x000000FF);
int cw = caca_get_canvas_width(cv);
int ch = caca_get_canvas_height(cv);
caca_set_display_title(dp, "Hello!");
//caca_set_color_ansi(cv, CACA_BLUE, CACA_WHITE);
//caca_put_str(cv, 0, 0, "This is a message");
caca_dither_bitmap(cv, 0,0,cw,ch, dither, gfx);
caca_refresh_display(dp);
caca_free_dither(dither);
//caca_get_event(dp, CACA_EVENT_KEY_PRESS, &ev, -1);
caca_get_event(dp, CACA_EVENT_KEY_PRESS, NULL, -1);
caca_free_display(dp);
return 0;
}
void processing_terminal() {
setup();
while (pt.running) {
//width = caca_get_canvas_width(pt.cv);
// height = caca_get_canvas_height(pt.cv);
if (!pt.PT_USE_DITHERING) {
width = caca_get_canvas_width(pt.cv) / X_SCALE;
height = caca_get_canvas_height(pt.cv);
} else {
width = pt.PT_bitmap_width;
height = pt.PT_bitmap_height;
}
pt.DITHERED_DRAW = 0;
pt.textrenderjoblist_items = 0;
if (!pt.PT_paused) {
draw();
}
if (pt.PT_USE_DITHERING && pt.DITHERED_DRAW) {
caca_dither_bitmap(caca_get_canvas(pt.dp), 0, 0, caca_get_canvas_width(pt.cv),
caca_get_canvas_height(pt.cv), pt.PT_dither, pt.PT_buffer);
}
render_text_items();
int duration = caca_get_display_time(pt.dp);
if (duration > 0) {
frameRate = (frameRate * 0.9) + ((1000000 / duration) * 0.1); //(1000 / duration);
}
caca_printf(pt.cv, 0, caca_get_canvas_height(pt.cv) - 1, "%d/%d key=%c (%d) fps=%f (%d)", width, height, key, key, frameRate,duration);
caca_refresh_display(pt.dp);
}
if (pt.PT_USE_DITHERING) caca_free_dither(pt.PT_dither);
caca_free_display(pt.dp);
caca_free_canvas(pt.cv);
closeKeyboard();
}
int main(int argc, char *argv[])
{
caca_display_t *dp;
caca_canvas_t *cv;
caca_dither_t *dither;
int x, y;
dp = caca_create_display(NULL);
if(dp == NULL)
{
printf("Can't create display\n");
return -1;
}
cv = caca_get_canvas(dp);
for(y = 0; y < 256; y++)
for(x = 0; x < 256; x++)
{
buffer[y * 256 + x] = ((y * x / 256) << 16) | ((y * x / 256) << 8) | (x<< 0);
}
dither = caca_create_dither(32, 256, 256, 4 * 256,
0x00ff0000, 0x0000ff00, 0x000000ff, 0x0);
caca_dither_bitmap(caca_get_canvas(dp), 0, 0, caca_get_canvas_width(cv),
caca_get_canvas_height(cv), dither, buffer);
caca_free_dither(dither);
caca_refresh_display(dp);
caca_get_event(dp, CACA_EVENT_KEY_PRESS, NULL, -1);
caca_free_display(dp);
return 0;
}
int main(int argc, char *argv[])
{
caca_canvas_t *cv;
caca_display_t *dp;
caca_font_t *f;
caca_dither_t *d;
uint8_t *buf;
unsigned int w, h;
char const * const * fonts;
/* Create a canvas */
cv = caca_create_canvas(8, 2);
if(cv == NULL)
{
printf("Can't create canvas\n");
return -1;
}
/* Draw stuff on our canvas */
caca_set_color_ansi(cv, CACA_WHITE, CACA_BLACK);
caca_put_str(cv, 0, 0, "ABcde");
caca_set_color_ansi(cv, CACA_LIGHTRED, CACA_BLACK);
caca_put_str(cv, 5, 0, "\\o/");
caca_set_color_ansi(cv, CACA_WHITE, CACA_BLUE);
caca_put_str(cv, 0, 1, "&$âøÿØ?!");
/* Load a libcaca internal font */
fonts = caca_get_font_list();
if(fonts[0] == NULL)
{
fprintf(stderr, "error: libcaca was compiled without any fonts\n");
return -1;
}
f = caca_load_font(fonts[0], 0);
if(f == NULL)
{
fprintf(stderr, "error: could not load font \"%s\"\n", fonts[0]);
return -1;
}
/* Create our bitmap buffer (32-bit ARGB) */
w = caca_get_canvas_width(cv) * caca_get_font_width(f);
h = caca_get_canvas_height(cv) * caca_get_font_height(f);
buf = malloc(4 * w * h);
/* Render the canvas onto our image buffer */
caca_render_canvas(cv, f, buf, w, h, 4 * w);
/* Just for fun, render the image using libcaca */
caca_set_canvas_size(cv, 80, 32);
dp = caca_create_display(cv);
{
#if defined(HAVE_ENDIAN_H)
if(__BYTE_ORDER == __BIG_ENDIAN)
#else
/* This is compile-time optimised with at least -O1 or -Os */
uint32_t const tmp = 0x12345678;
if(*(uint8_t const *)&tmp == 0x12)
#endif
d = caca_create_dither(32, w, h, 4 * w,
0xff0000, 0xff00, 0xff, 0xff000000);
else
d = caca_create_dither(32, w, h, 4 * w,
0xff00, 0xff0000, 0xff000000, 0xff);
}
caca_dither_bitmap(cv, 0, 0, caca_get_canvas_width(cv),
caca_get_canvas_height(cv), d, buf);
caca_refresh_display(dp);
caca_get_event(dp, CACA_EVENT_KEY_PRESS, NULL, -1);
/* Free everything */
caca_free_display(dp);
free(buf);
caca_free_dither(d);
caca_free_font(f);
caca_free_canvas(cv);
return 0;
}
int main(int argc, char *argv[])
{
caca_canvas_t *cv;
caca_dither_t *dither;
void *buffer;
char *file, *format;
char const * const * exports, * const * p;
size_t len;
int x, y;
exports = caca_get_export_list();
if(argc < 2 || argc > 3)
{
fprintf(stderr, "%s: wrong argument count\n", argv[0]);
fprintf(stderr, "usage: %s [file] <format>\n", argv[0]);
fprintf(stderr, "where <format> is one of:\n");
for(p = exports; *p; p += 2)
fprintf(stderr, " \"%s\" (%s)\n", *p, *(p + 1));
exit(-1);
}
if(argc == 2)
{
file = NULL;
format = argv[1];
}
else
{
file = argv[1];
format = argv[2];
}
for(p = exports; *p; p += 2)
if(!strcasecmp(format, *p))
break;
if(!*p)
{
fprintf(stderr, "%s: unknown format `%s'\n", argv[0], format);
fprintf(stderr, "please use one of:\n");
for(p = exports; *p; p += 2)
fprintf(stderr, " \"%s\" (%s)\n", *p, *(p + 1));
exit(-1);
}
if(file)
{
cv = caca_create_canvas(0, 0);
if(caca_import_canvas_from_file(cv, file, "") < 0)
{
fprintf(stderr, "%s: `%s' has unknown format\n", argv[0], file);
exit(-1);
}
}
else
{
cv = caca_create_canvas(WIDTH, HEIGHT);
for(y = 0; y < 256; y++)
{
for(x = 0; x < 256; x++)
{
uint32_t r = x;
uint32_t g = (255 - y + x) / 2;
uint32_t b = y * (255 - x) / 256;
pixels[y * 256 + x] = (r << 16) | (g << 8) | (b << 0);
}
}
dither = caca_create_dither(32, 256, 256, 4 * 256,
0x00ff0000, 0x0000ff00, 0x000000ff, 0x0);
if(!strcmp(format, "ansi") || !strcmp(format, "utf8"))
caca_set_dither_charset(dither, "shades");
caca_dither_bitmap(cv, 0, 0, caca_get_canvas_width(cv),
caca_get_canvas_height(cv), dither, pixels);
caca_free_dither(dither);
caca_set_color_ansi(cv, CACA_WHITE, CACA_BLACK);
caca_draw_thin_box(cv, 0, 0, WIDTH - 1, HEIGHT - 1);
caca_set_color_ansi(cv, CACA_BLACK, CACA_WHITE);
caca_fill_ellipse(cv, WIDTH / 2, HEIGHT / 2,
WIDTH / 4, HEIGHT / 4, ' ');
caca_set_color_ansi(cv, CACA_LIGHTGRAY, CACA_BLACK);
caca_put_str(cv, WIDTH / 2 - 12, HEIGHT / 2 - 6,
" lightgray on black ");
caca_set_color_ansi(cv, CACA_DEFAULT, CACA_TRANSPARENT);
caca_put_str(cv, WIDTH / 2 - 12, HEIGHT / 2 - 5,
" default on transparent ");
caca_set_color_ansi(cv, CACA_BLACK, CACA_WHITE);
caca_put_str(cv, WIDTH / 2 - 12, HEIGHT / 2 - 4,
" black on white ");
caca_set_color_ansi(cv, CACA_BLACK, CACA_WHITE);
caca_put_str(cv, WIDTH / 2 - 8, HEIGHT / 2 - 3, "[<><><><> <>--<>]");
caca_put_str(cv, WIDTH / 2 - 8, HEIGHT / 2 - 2, "[ドラゴン ボーレ]");
caca_put_str(cv, WIDTH / 2 - 7, HEIGHT / 2 + 2, "äβç ░▒▓█▓▒░ ΔЗҒ");
caca_put_str(cv, WIDTH / 2 - 5, HEIGHT / 2 + 4, "(\") \\o/ <&>");
caca_set_attr(cv, CACA_BOLD);
caca_put_str(cv, WIDTH / 2 - 16, HEIGHT / 2 + 3, "Bold");
caca_set_attr(cv, CACA_BLINK);
caca_put_str(cv, WIDTH / 2 - 9, HEIGHT / 2 + 3, "Blink");
caca_set_attr(cv, CACA_ITALICS);
caca_put_str(cv, WIDTH / 2 - 1, HEIGHT / 2 + 3, "Italics");
caca_set_attr(cv, CACA_UNDERLINE);
caca_put_str(cv, WIDTH / 2 + 8, HEIGHT / 2 + 3, "Underline");
caca_set_attr(cv, 0);
caca_set_color_ansi(cv, CACA_WHITE, CACA_LIGHTBLUE);
caca_put_str(cv, WIDTH / 2 - 7, HEIGHT / 2, " LIBCACA ");
for(x = 0; x < 16; x++)
{
caca_set_color_argb(cv, 0xff00 | x, 0xf00f | (x << 4));
caca_put_char(cv, WIDTH / 2 - 7 + x, HEIGHT / 2 + 6, '#');
}
}
buffer = caca_export_canvas_to_memory(cv, format, &len);
fwrite(buffer, len, 1, stdout);
free(buffer);
caca_free_canvas(cv);
return 0;
}
static int draw_frame(uint8_t *src[])
{
caca_dither_bitmap(canvas, 0, 0, screen_w, screen_h, dither, src[0]);
return 0;
}
static void draw_image(struct vo *vo, mp_image_t *mpi)
{
memcpy_pic(dither_buffer, mpi->planes[0], image_width * depth, image_height,
image_width * depth, mpi->stride[0]);
caca_dither_bitmap(canvas, 0, 0, screen_w, screen_h, dither, dither_buffer);
}
void moire(enum action action, caca_canvas_t *cv)
{
static caca_dither_t *dither;
static uint8_t *screen;
static float d[6];
static uint32_t red[256], green[256], blue[256], alpha[256];
int i, x, y;
switch(action)
{
case PREPARE:
/* Fill various tables */
for(i = 0 ; i < 256; i++)
red[i] = green[i] = blue[i] = alpha[i] = 0;
for(i = 0; i < 6; i++)
d[i] = ((float)caca_rand(50, 70)) / 1000.0;
red[0] = green[0] = blue[0] = 0x777;
red[1] = green[1] = blue[1] = 0xfff;
/* Fill the circle */
for(i = DISCSIZ * 2; i > 0; i -= DISCTHICKNESS)
{
int t, dx, dy;
for(t = 0, dx = 0, dy = i; dx <= dy; dx++)
{
draw_line(dx / 3, dy / 3, (i / DISCTHICKNESS) % 2);
draw_line(dy / 3, dx / 3, (i / DISCTHICKNESS) % 2);
t += t > 0 ? dx - dy-- : dx;
}
}
break;
case INIT:
screen = malloc(XSIZ * YSIZ * sizeof(uint8_t));
dither = caca_create_dither(8, XSIZ, YSIZ, XSIZ, 0, 0, 0, 0);
break;
case UPDATE:
memset(screen, 0, XSIZ * YSIZ);
/* Set the palette */
red[0] = 0.5 * (1 + sin(d[0] * (frame + 1000))) * 0xfff;
green[0] = 0.5 * (1 + cos(d[1] * frame)) * 0xfff;
blue[0] = 0.5 * (1 + cos(d[2] * (frame + 3000))) * 0xfff;
red[1] = 0.5 * (1 + sin(d[3] * (frame + 2000))) * 0xfff;
green[1] = 0.5 * (1 + cos(d[4] * frame + 5.0)) * 0xfff;
blue[1] = 0.5 * (1 + cos(d[5] * (frame + 4000))) * 0xfff;
caca_set_dither_palette(dither, red, green, blue, alpha);
/* Draw circles */
x = cos(d[0] * (frame + 1000)) * 128.0 + (XSIZ / 2);
y = sin(0.11 * frame) * 128.0 + (YSIZ / 2);
put_disc(screen, x, y);
x = cos(0.13 * frame + 2.0) * 64.0 + (XSIZ / 2);
y = sin(d[1] * (frame + 2000)) * 64.0 + (YSIZ / 2);
put_disc(screen, x, y);
break;
case RENDER:
caca_dither_bitmap(cv, 0, 0,
caca_get_canvas_width(cv),
caca_get_canvas_height(cv),
dither, screen);
break;
case FREE:
free(screen);
caca_free_dither(dither);
break;
}
}
void metaballs(enum action action, caca_canvas_t *cv)
{
static caca_dither_t *caca_dither;
static uint8_t *screen;
static uint32_t r[256], g[256], b[256], a[256];
static float dd[METABALLS], di[METABALLS], dj[METABALLS], dk[METABALLS];
static unsigned int x[METABALLS], y[METABALLS];
static float i = 10.0, j = 17.0, k = 11.0;
static double offset[360 + 80];
static unsigned int angleoff;
int n, angle;
switch(action)
{
case PREPARE:
/* Make the palette eatable by libcaca */
for(n = 0; n < 256; n++)
r[n] = g[n] = b[n] = a[n] = 0x0;
r[255] = g[255] = b[255] = 0xfff;
/* Generate ball sprite */
create_ball();
for(n = 0; n < METABALLS; n++)
{
dd[n] = caca_rand(0, 100);
di[n] = (float)caca_rand(500, 4000) / 6000.0;
dj[n] = (float)caca_rand(500, 4000) / 6000.0;
dk[n] = (float)caca_rand(500, 4000) / 6000.0;
}
angleoff = caca_rand(0, 360);
for(n = 0; n < 360 + 80; n++)
offset[n] = 1.0 + sin((double)(n * M_PI / 60));
break;
case INIT:
screen = malloc(XSIZ * YSIZ * sizeof(uint8_t));
/* Create a libcaca dither smaller than our pixel buffer, so that we
* display only the interesting part of it */
caca_dither = caca_create_dither(8, XSIZ - METASIZE, YSIZ - METASIZE,
XSIZ, 0, 0, 0, 0);
break;
case UPDATE:
angle = (frame + angleoff) % 360;
/* Crop the palette */
for(n = CROPBALL; n < 255; n++)
{
int t1, t2, t3;
double c1 = offset[angle];
double c2 = offset[angle + 40];
double c3 = offset[angle + 80];
t1 = n < 0x40 ? 0 : n < 0xc0 ? (n - 0x40) * 0x20 : 0xfff;
t2 = n < 0xe0 ? 0 : (n - 0xe0) * 0x80;
t3 = n < 0x40 ? n * 0x40 : 0xfff;
r[n] = (c1 * t1 + c2 * t2 + c3 * t3) / 4;
g[n] = (c1 * t2 + c2 * t3 + c3 * t1) / 4;
b[n] = (c1 * t3 + c2 * t1 + c3 * t2) / 4;
}
/* Set the palette */
caca_set_dither_palette(caca_dither, r, g, b, a);
/* Silly paths for our balls */
for(n = 0; n < METABALLS; n++)
{
float u = di[n] * i + dj[n] * j + dk[n] * sin(di[n] * k);
float v = dd[n] + di[n] * j + dj[n] * k + dk[n] * sin(dk[n] * i);
u = sin(i + u * 2.1) * (1.0 + sin(u));
v = sin(j + v * 1.9) * (1.0 + sin(v));
x[n] = (XSIZ - METASIZE) / 2 + u * (XSIZ - METASIZE) / 4;
y[n] = (YSIZ - METASIZE) / 2 + v * (YSIZ - METASIZE) / 4;
}
i += 0.011;
j += 0.017;
k += 0.019;
memset(screen, 0, XSIZ * YSIZ);
for(n = 0; n < METABALLS; n++)
draw_ball(screen, x[n], y[n]);
break;
case RENDER:
caca_dither_bitmap(cv, 0, 0,
caca_get_canvas_width(cv),
caca_get_canvas_height(cv),
caca_dither, screen + (METASIZE / 2) * (1 + XSIZ));
break;
case FREE:
free(screen);
caca_free_dither(caca_dither);
break;
}
}
void plasma(enum action action, caca_canvas_t *cv)
{
static caca_dither_t *dither;
static uint8_t *screen;
static uint32_t red[256], green[256], blue[256], alpha[256];
static double r[3], R[6];
int i, x, y;
switch(action)
{
case PREPARE:
/* Fill various tables */
for(i = 0 ; i < 256; i++)
red[i] = green[i] = blue[i] = alpha[i] = 0;
for(i = 0; i < 3; i++)
r[i] = (double)(caca_rand(1, 1000)) / 60000 * M_PI;
for(i = 0; i < 6; i++)
R[i] = (double)(caca_rand(1, 1000)) / 10000;
for(y = 0 ; y < TABLEY ; y++)
for(x = 0 ; x < TABLEX ; x++)
{
double tmp = (((double)((x - (TABLEX / 2)) * (x - (TABLEX / 2))
+ (y - (TABLEX / 2)) * (y - (TABLEX / 2))))
* (M_PI / (TABLEX * TABLEX + TABLEY * TABLEY)));
table[x + y * TABLEX] = (1.0 + sin(12.0 * sqrt(tmp))) * 256 / 6;
}
break;
case INIT:
screen = malloc(XSIZ * YSIZ * sizeof(uint8_t));
dither = caca_create_dither(8, XSIZ, YSIZ, XSIZ, 0, 0, 0, 0);
break;
case UPDATE:
for(i = 0 ; i < 256; i++)
{
double z = ((double)i) / 256 * 6 * M_PI;
red[i] = (1.0 + sin(z + r[1] * frame)) / 2 * 0xfff;
blue[i] = (1.0 + cos(z + r[0] * (frame + 100))) / 2 * 0xfff;
green[i] = (1.0 + cos(z + r[2] * (frame + 200))) / 2 * 0xfff;
}
/* Set the palette */
caca_set_dither_palette(dither, red, green, blue, alpha);
do_plasma(screen,
(1.0 + sin(((double)frame) * R[0])) / 2,
(1.0 + sin(((double)frame) * R[1])) / 2,
(1.0 + sin(((double)frame) * R[2])) / 2,
(1.0 + sin(((double)frame) * R[3])) / 2,
(1.0 + sin(((double)frame) * R[4])) / 2,
(1.0 + sin(((double)frame) * R[5])) / 2);
break;
case RENDER:
caca_dither_bitmap(cv, 0, 0,
caca_get_canvas_width(cv),
caca_get_canvas_height(cv),
dither, screen);
break;
case FREE:
free(screen);
caca_free_dither(dither);
break;
}
}
static bool caca_gfx_frame(void *data, const void *frame,
unsigned frame_width, unsigned frame_height, uint64_t frame_count,
unsigned pitch, const char *msg)
{
size_t len = 0;
void *buffer = NULL;
const void *frame_to_copy = frame;
unsigned width = 0;
unsigned height = 0;
bool draw = true;
(void)data;
(void)frame;
(void)frame_width;
(void)frame_height;
(void)pitch;
(void)msg;
if (!frame || !frame_width || !frame_height)
return true;
if (caca_video_width != frame_width || caca_video_height != frame_height || caca_video_pitch != pitch)
{
if (frame_width > 4 && frame_height > 4)
{
caca_video_width = frame_width;
caca_video_height = frame_height;
caca_video_pitch = pitch;
caca_gfx_free(NULL);
caca_gfx_create();
}
}
if (!caca_cv)
return true;
if (caca_menu_frame)
frame_to_copy = caca_menu_frame;
width = caca_get_canvas_width(caca_cv);
height = caca_get_canvas_height(caca_cv);
if (frame_to_copy == frame && frame_width == 4 && frame_height == 4 && (frame_width < width && frame_height < height))
draw = false;
caca_clear_canvas(caca_cv);
#ifdef HAVE_MENU
menu_driver_ctl(RARCH_MENU_CTL_FRAME, NULL);
#endif
if (msg)
font_driver_render_msg(NULL, msg, NULL);
if (draw)
{
caca_dither_bitmap(caca_cv, 0, 0,
width,
height,
caca_dither, frame_to_copy);
buffer = caca_export_canvas_to_memory(caca_cv, "caca", &len);
if (buffer)
{
if (len)
caca_refresh_display(caca_display);
free(buffer);
}
}
return true;
}
int main(int argc, char *argv[])
{
/* libcaca/libcaca contexts */
caca_canvas_t *cv;
caca_display_t *dp;
caca_canvas_t *tex;
/* cached canvas size */
int ww, wh, tw, th;
/* logic */
int quit = 0;
int update = 1;
int px, py;
float angle = 0;
float square[6][2] = {
{-SQUARE_SIZE, -SQUARE_SIZE},
{SQUARE_SIZE, -SQUARE_SIZE},
{SQUARE_SIZE, SQUARE_SIZE},
{-SQUARE_SIZE, SQUARE_SIZE},
};
float uv1[6] = {
0, 0,
1, 0,
1, 1
};
float uv2[6] = {
0, 0,
1, 1,
0, 1
};
float rotated[4][2];
int coords1[6], coords2[6];
/* Create displayed canvas */
cv = caca_create_canvas(0, 0);
if (!cv)
{
fprintf(stderr, "%s: unable to initialise libcaca\n", argv[0]);
return 1;
}
/* Create texture holding canvas */
tex = caca_create_canvas(16, 16);
if (!tex)
{
fprintf(stderr, "%s: unable to initialise libcaca\n", argv[0]);
return 1;
}
/* Open window */
dp = caca_create_display(cv);
if (!dp)
{
fprintf(stderr, "%s: unable to initialise libcaca\n", argv[0]);
return 1;
}
/* Set the window title */
caca_set_display_title(dp, "trifiller");
/* Frame duration */
caca_set_display_time(dp, 10000);
/* Get displayed canvas size */
ww = caca_get_canvas_width(cv);
wh = caca_get_canvas_height(cv);
/* Texture size */
tw = caca_get_canvas_width(tex);
th = caca_get_canvas_height(tex);
/* Load texture if any */
if (argc == 2)
{
struct image *im = load_image(argv[1]);
if (!im)
{
fprintf(stderr, "%s: unable to load image '%s'\n", argv[0],
argv[1]);
return 1;
}
caca_set_dither_algorithm(im->dither,
caca_get_dither_algorithm_list(NULL)[4]);
caca_dither_bitmap(tex, 0, 0, tw, th, im->dither, im->pixels);
unload_image(im);
}
/* or generate one */
else
{
int i;
for (i = 0; i < 16; i++)
{
caca_set_color_ansi(tex, (i + 1) % 0xF, i % 0xF);
caca_put_str(tex, 0, i, "0123456789ABCDEF");
}
}
px = 0;
py = 0;
while (!quit)
{
caca_event_t ev;
unsigned int const event_mask = CACA_EVENT_KEY_PRESS
| CACA_EVENT_RESIZE | CACA_EVENT_QUIT;
int event;
if (update)
event = caca_get_event(dp, event_mask, &ev, 0);
else
event = caca_get_event(dp, event_mask, &ev, -1);
while (event)
{
if (caca_get_event_type(&ev) & CACA_EVENT_KEY_PRESS)
switch (caca_get_event_key_ch(&ev))
{
case 'q':
case 'Q':
case CACA_KEY_ESCAPE:
quit = 1;
break;
case CACA_KEY_UP:
py--;
break;
case CACA_KEY_DOWN:
py++;
break;
case CACA_KEY_LEFT:
px--;
break;
case CACA_KEY_RIGHT:
px++;
break;
case 'a':
angle += 1.0f;
break;
case 's':
angle -= 1.0f;
break;
}
else if (caca_get_event_type(&ev) == CACA_EVENT_RESIZE)
{
caca_refresh_display(dp);
ww = caca_get_event_resize_width(&ev);
wh = caca_get_event_resize_height(&ev);
update = 1;
}
else if (caca_get_event_type(&ev) & CACA_EVENT_QUIT)
quit = 1;
event = caca_get_event(dp, CACA_EVENT_KEY_PRESS, &ev, 0);
}
/* 2D Rotation around screen center */
int p;
for (p = 0; p < 4; p++)
{
rotated[p][0] =
square[p][0] * cos(angle * M_PI / 180.0f) -
square[p][1] * sin(angle * M_PI / 180.0f);
rotated[p][1] =
square[p][0] * sin(angle * M_PI / 180.0f) +
square[p][1] * cos(angle * M_PI / 180.0f);
rotated[p][0] += ww / 2 + px;
rotated[p][1] += wh / 2 + py;
}
angle += 1.0f;
/* Reaarange coordinates to fit libcaca's format */
coords1[0] = rotated[0][0];
coords1[1] = rotated[0][1];
coords1[2] = rotated[1][0];
coords1[3] = rotated[1][1];
coords1[4] = rotated[2][0];
coords1[5] = rotated[2][1];
coords2[0] = rotated[0][0];
coords2[1] = rotated[0][1];
coords2[2] = rotated[2][0];
coords2[3] = rotated[2][1];
coords2[4] = rotated[3][0];
coords2[5] = rotated[3][1];
/* Display two triangles */
caca_fill_triangle_textured(cv, /* canvas */
coords1, /* triangle coordinates */
tex, /* texture canvas */
uv1); /* texture coordinates */
caca_fill_triangle_textured(cv, coords2, tex, uv2);
/* Refresh display and clear for next frame */
caca_refresh_display(dp);
caca_clear_canvas(cv);
}
caca_free_display(dp);
caca_free_canvas(cv);
caca_free_canvas(tex);
return 0;
}