|
- /*
- * demo demo for libcaca version 0.9
- * Copyright (c) 2003 Sam Hocevar <sam@zoy.org>
- * All Rights Reserved
- *
- * $Id$
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- * 02111-1307 USA
- */
-
- #include "config.h"
-
- #if !defined(__KERNEL__)
- # include <math.h>
- # include <string.h>
- # include <stdio.h>
- #endif
-
- #include "caca0.h"
-
- static void display_menu(void);
-
- static void demo_all(void);
-
- static void demo_color(void);
- static void demo_dots(void);
- static void demo_lines(void);
- static void demo_boxes(void);
- static void demo_ellipses(void);
- static void demo_triangles(void);
- #if 0
- static void demo_sprites(void);
- #endif
- static void demo_render(void);
-
- int bounds = 0;
- int outline = 0;
- int dithering = 0;
- struct caca_sprite *sprite = NULL;
-
- int main(int argc, char **argv)
- {
- void (*demo)(void) = NULL;
- int quit = 0;
-
- if(caca_init())
- return 1;
-
- caca_set_delay(40000);
-
- /* Initialize data */
- #if 0
- sprite = caca_load_sprite(DATADIR "/caca.txt");
- if(!sprite)
- sprite = caca_load_sprite("caca.txt");
- if(!sprite)
- sprite = caca_load_sprite("examples/caca.txt");
- #endif
-
- /* Main menu */
- display_menu();
-
- /* Go ! */
- while(!quit)
- {
- int menu = 0, mouse = 0, xmouse = 0, ymouse = 0;
- int event;
-
- while((event = caca_get_event(CACA_EVENT_ANY)))
- {
- if(demo && (event & CACA_EVENT_KEY_PRESS))
- {
- menu = 1;
- demo = NULL;
- }
- else if(event & CACA_EVENT_KEY_PRESS)
- {
- switch(event & 0xffff)
- {
- case 'q':
- case 'Q':
- demo = NULL;
- quit = 1;
- break;
- case 'o':
- case 'O':
- outline = (outline + 1) % 3;
- display_menu();
- break;
- case 'b':
- case 'B':
- bounds = (bounds + 1) % 2;
- display_menu();
- break;
- case 'd':
- case 'D':
- dithering = (dithering + 1) % 5;
- caca_set_dithering(CACA_DITHERING_NONE + dithering);
- display_menu();
- break;
- case 'c':
- demo = demo_color;
- break;
- case 'f':
- case 'F':
- demo = demo_all;
- break;
- case '1':
- demo = demo_dots;
- break;
- case '2':
- demo = demo_lines;
- break;
- case '3':
- demo = demo_boxes;
- break;
- case '4':
- demo = demo_triangles;
- break;
- case '5':
- demo = demo_ellipses;
- break;
- #if 0
- case 's':
- case 'S':
- if(sprite)
- demo = demo_sprites;
- break;
- #endif
- case 'r':
- case 'R':
- demo = demo_render;
- break;
- }
-
- if(demo)
- caca_clear();
- }
- else if(event & CACA_EVENT_MOUSE_MOTION)
- {
- mouse = 1;
- xmouse = (event & 0xfff000) >> 12;
- ymouse = event & 0xfff;
- }
- }
-
- if(menu || (mouse && !demo))
- {
- display_menu();
- if(mouse && !demo)
- {
- caca_set_color(CACA_COLOR_RED, CACA_COLOR_BLACK);
- caca_putstr(xmouse, ymouse, "|\\");
- }
- caca_refresh();
- mouse = menu = 0;
- }
-
- if(demo)
- {
- demo();
-
- caca_set_color(CACA_COLOR_LIGHTGRAY, CACA_COLOR_BLACK);
- caca_draw_thin_box(1, 1, caca_get_width() - 2, caca_get_height() - 2);
- caca_printf(4, 1, "[%i.%i fps]----",
- 1000000 / caca_get_rendertime(),
- (10000000 / caca_get_rendertime()) % 10);
- caca_refresh();
- }
- }
-
- /* Clean up */
- #if 0
- caca_free_sprite(sprite);
- #endif
- caca_end();
-
- return 0;
- }
-
- static void display_menu(void)
- {
- int xo = caca_get_width() - 2;
- int yo = caca_get_height() - 2;
-
- caca_clear();
- caca_set_color(CACA_COLOR_LIGHTGRAY, CACA_COLOR_BLACK);
- caca_draw_thin_box(1, 1, xo, yo);
-
- caca_putstr((xo - strlen("libcaca demo")) / 2, 3, "libcaca demo");
- caca_putstr((xo - strlen("==============")) / 2, 4, "==============");
-
- caca_putstr(4, 6, "demos:");
- caca_putstr(4, 7, "'f': full");
- caca_putstr(4, 8, "'1': dots");
- caca_putstr(4, 9, "'2': lines");
- caca_putstr(4, 10, "'3': boxes");
- caca_putstr(4, 11, "'4': triangles");
- caca_putstr(4, 12, "'5': ellipses");
- caca_putstr(4, 13, "'c': colour");
- caca_putstr(4, 14, "'r': render");
- if(sprite)
- caca_putstr(4, 15, "'s': sprites");
-
- caca_putstr(4, 16, "settings:");
- caca_printf(4, 17, "'o': outline: %s",
- outline == 0 ? "none" : outline == 1 ? "solid" : "thin");
- caca_printf(4, 18, "'b': drawing boundaries: %s",
- bounds == 0 ? "screen" : "infinite");
- caca_printf(4, 19, "'d': dithering (%s)",
- caca_get_dithering_name(CACA_DITHERING_NONE + dithering));
-
- caca_putstr(4, yo - 2, "'q': quit");
- caca_refresh();
- }
-
- static void demo_all(void)
- {
- static int i = 0;
-
- int j, xo, yo, xa, ya, xb, yb, xc, yc;
-
- i++;
-
- caca_clear();
-
- /* Draw the sun */
- caca_set_color(CACA_COLOR_YELLOW, CACA_COLOR_BLACK);
- xo = caca_get_width() / 4;
- yo = caca_get_height() / 4 + 5 * sin(0.03*i);
-
- for(j = 0; j < 16; j++)
- {
- xa = xo - (30 + sin(0.03*i) * 8) * sin(0.03*i + M_PI*j/8);
- ya = yo + (15 + sin(0.03*i) * 4) * cos(0.03*i + M_PI*j/8);
- caca_draw_thin_line(xo, yo, xa, ya);
- }
-
- j = 15 + sin(0.03*i) * 8;
- caca_set_color(CACA_COLOR_WHITE, CACA_COLOR_BLACK);
- caca_fill_ellipse(xo, yo, j, j / 2, '#');
- caca_set_color(CACA_COLOR_YELLOW, CACA_COLOR_BLACK);
- caca_draw_ellipse(xo, yo, j, j / 2, '#');
-
- /* Draw the pyramid */
- xo = caca_get_width() * 5 / 8;
- yo = 2;
-
- xa = caca_get_width() / 8 + sin(0.03*i) * 5;
- ya = caca_get_height() / 2 + cos(0.03*i) * 5;
-
- xb = caca_get_width() - 10 - cos(0.02*i) * 10;
- yb = caca_get_height() * 3 / 4 - 5 + sin(0.02*i) * 5;
-
- xc = caca_get_width() / 4 - sin(0.02*i) * 5;
- yc = caca_get_height() * 3 / 4 + cos(0.02*i) * 5;
-
- caca_set_color(CACA_COLOR_GREEN, CACA_COLOR_BLACK);
- caca_fill_triangle(xo, yo, xb, yb, xa, ya, '%');
- caca_set_color(CACA_COLOR_YELLOW, CACA_COLOR_BLACK);
- caca_draw_thin_triangle(xo, yo, xb, yb, xa, ya);
-
- caca_set_color(CACA_COLOR_RED, CACA_COLOR_BLACK);
- caca_fill_triangle(xa, ya, xb, yb, xc, yc, '#');
- caca_set_color(CACA_COLOR_YELLOW, CACA_COLOR_BLACK);
- caca_draw_thin_triangle(xa, ya, xb, yb, xc, yc);
-
- caca_set_color(CACA_COLOR_BLUE, CACA_COLOR_BLACK);
- caca_fill_triangle(xo, yo, xb, yb, xc, yc, '%');
- caca_set_color(CACA_COLOR_YELLOW, CACA_COLOR_BLACK);
- caca_draw_thin_triangle(xo, yo, xb, yb, xc, yc);
-
- /* Draw a background triangle */
- xa = 2;
- ya = 2;
-
- xb = caca_get_width() - 3;
- yb = caca_get_height() / 2;
-
- xc = caca_get_width() / 3;
- yc = caca_get_height() - 3;
-
- caca_set_color(CACA_COLOR_CYAN, CACA_COLOR_BLACK);
- caca_draw_thin_triangle(xa, ya, xb, yb, xc, yc);
-
- xo = caca_get_width() / 2 + cos(0.027*i) * caca_get_width() / 3;
- yo = caca_get_height() / 2 - sin(0.027*i) * caca_get_height() / 2;
-
- caca_draw_thin_line(xa, ya, xo, yo);
- caca_draw_thin_line(xb, yb, xo, yo);
- caca_draw_thin_line(xc, yc, xo, yo);
-
- /* Draw a sprite on the pyramid */
- #if 0
- caca_draw_sprite(xo, yo, sprite, 0);
- #endif
-
- /* Draw a trail behind the foreground sprite */
- for(j = i - 60; j < i; j++)
- {
- int delta = caca_rand(-5, 5);
- caca_set_color(caca_rand(0, 15), caca_rand(0, 15));
- caca_putchar(caca_get_width() / 2
- + cos(0.02*j) * (delta + caca_get_width() / 4),
- caca_get_height() / 2
- + sin(0.02*j) * (delta + caca_get_height() / 3),
- '#');
- }
-
- /* Draw foreground sprite */
- #if 0
- caca_draw_sprite(caca_get_width() / 2 + cos(0.02*i) * caca_get_width() / 4,
- caca_get_height() / 2 + sin(0.02*i) * caca_get_height() / 3,
- sprite, 0);
- #endif
- }
-
- static void demo_dots(void)
- {
- int xmax = caca_get_width() - 1;
- int ymax = caca_get_height() - 1;
- int i;
- static char chars[10] =
- {
- '+', '-', '*', '#', 'X', '@', '%', '$', 'M', 'W'
- };
-
- for(i = 1000; i--;)
- {
- /* Putpixel */
- caca_set_color(caca_rand(0, 15), caca_rand(0, 15));
- caca_putchar(caca_rand(0, xmax), caca_rand(0, ymax),
- chars[caca_rand(0, 9)]);
- }
- }
-
- static void demo_color(void)
- {
- int i, j;
- char buf[BUFSIZ];
-
- caca_clear();
- for(i = 0; i < 16; i++)
- {
- sprintf(buf, "'%c': %i (%s)", 'a' + i, i, caca_get_color_name(i));
- caca_set_color(CACA_COLOR_LIGHTGRAY, CACA_COLOR_BLACK);
- caca_putstr(4, i + (i >= 8 ? 4 : 3), buf);
- for(j = 0; j < 16; j++)
- {
- caca_set_color(i, j);
- caca_putstr((j >= 8 ? 41 : 40) + j * 2, i + (i >= 8 ? 4 : 3), "# ");
- }
- }
- }
-
- static void demo_lines(void)
- {
- int w = caca_get_width();
- int h = caca_get_height();
- int xa, ya, xb, yb;
-
- if(bounds)
- {
- xa = caca_rand(- w, 2 * w); ya = caca_rand(- h, 2 * h);
- xb = caca_rand(- w, 2 * w); yb = caca_rand(- h, 2 * h);
- }
- else
- {
- xa = caca_rand(0, w - 1); ya = caca_rand(0, h - 1);
- xb = caca_rand(0, w - 1); yb = caca_rand(0, h - 1);
- }
-
- caca_set_color(caca_rand(0, 15), CACA_COLOR_BLACK);
- if(outline > 1)
- caca_draw_thin_line(xa, ya, xb, yb);
- else
- caca_draw_line(xa, ya, xb, yb, '#');
- }
-
- static void demo_boxes(void)
- {
- int w = caca_get_width();
- int h = caca_get_height();
- int xa, ya, xb, yb;
-
- if(bounds)
- {
- xa = caca_rand(- w, 2 * w); ya = caca_rand(- h, 2 * h);
- xb = caca_rand(- w, 2 * w); yb = caca_rand(- h, 2 * h);
- }
- else
- {
- xa = caca_rand(0, w - 1); ya = caca_rand(0, h - 1);
- xb = caca_rand(0, w - 1); yb = caca_rand(0, h - 1);
- }
-
- caca_set_color(caca_rand(0, 15), caca_rand(0, 15));
- caca_fill_box(xa, ya, xb, yb, '#');
-
- caca_set_color(caca_rand(0, 15), CACA_COLOR_BLACK);
- if(outline == 2)
- caca_draw_thin_box(xa, ya, xb, yb);
- else if(outline == 1)
- caca_draw_box(xa, ya, xb, yb, '#');
- }
-
- static void demo_ellipses(void)
- {
- int w = caca_get_width();
- int h = caca_get_height();
- int x, y, a, b;
-
- if(bounds)
- {
- x = caca_rand(- w, 2 * w); y = caca_rand(- h, 2 * h);
- a = caca_rand(0, w); b = caca_rand(0, h);
- }
- else
- {
- do
- {
- x = caca_rand(0, w); y = caca_rand(0, h);
- a = caca_rand(0, w); b = caca_rand(0, h);
-
- } while(x - a < 0 || x + a >= w || y - b < 0 || y + b >= h);
- }
-
- caca_set_color(caca_rand(0, 15), caca_rand(0, 15));
- caca_fill_ellipse(x, y, a, b, '#');
-
- caca_set_color(caca_rand(0, 15), CACA_COLOR_BLACK);
- if(outline == 2)
- caca_draw_thin_ellipse(x, y, a, b);
- else if(outline == 1)
- caca_draw_ellipse(x, y, a, b, '#');
- }
-
- static void demo_triangles(void)
- {
- int w = caca_get_width();
- int h = caca_get_height();
- int xa, ya, xb, yb, xc, yc;
-
- if(bounds)
- {
- xa = caca_rand(- w, 2 * w); ya = caca_rand(- h, 2 * h);
- xb = caca_rand(- w, 2 * w); yb = caca_rand(- h, 2 * h);
- xc = caca_rand(- w, 2 * w); yc = caca_rand(- h, 2 * h);
- }
- else
- {
-
- xa = caca_rand(0, w - 1); ya = caca_rand(0, h - 1);
- xb = caca_rand(0, w - 1); yb = caca_rand(0, h - 1);
- xc = caca_rand(0, w - 1); yc = caca_rand(0, h - 1);
- }
-
- caca_set_color(caca_rand(0, 15), caca_rand(0, 15));
- caca_fill_triangle(xa, ya, xb, yb, xc, yc, '#');
-
- caca_set_color(caca_rand(0, 15), CACA_COLOR_BLACK);
- if(outline == 2)
- caca_draw_thin_triangle(xa, ya, xb, yb, xc, yc);
- else if(outline == 1)
- caca_draw_triangle(xa, ya, xb, yb, xc, yc, '#');
- }
-
- #if 0
- static void demo_sprites(void)
- {
- caca_draw_sprite(caca_rand(0, caca_get_width() - 1),
- caca_rand(0, caca_get_height() - 1), sprite, 0);
- }
- #endif
-
- #if 0
- static void demo_render(void)
- {
- struct caca_bitmap *bitmap;
- //short buffer[256*256];
- //short *dest = buffer;
- int buffer[256*256];
- int *dest = buffer;
- int x, y, z;
- static int i = 0;
-
- i = (i + 1) % 512;
- z = i < 256 ? i : 511 - i;
-
- for(x = 0; x < 256; x++)
- for(y = 0; y < 256; y++)
- {
- //*dest++ = ((x >> 3) << 11) | ((y >> 2) << 5) | ((z >> 3));
- *dest++ = (x << 16) | (y << 8) | (z);
- }
-
- //bitmap = caca_create_bitmap(16, 256, 256, 2 * 256, 0xf800, 0x07e0, 0x001f, 0x0000);
- bitmap = caca_create_bitmap(32, 256, 256, 4 * 256, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000);
- caca_draw_bitmap(0, 0, caca_get_width() - 1, caca_get_height() - 1,
- bitmap, buffer);
- caca_free_bitmap(bitmap);
- }
- #endif
-
- static void draw_circle(int *buffer, int xo, int yo, int r, int mask, int val);
-
- static void demo_render(void)
- {
- struct caca_bitmap *bitmap;
- int buffer[256*256];
- int *dest;
- int x, y, z, xo, yo;
- static int i = 0;
-
- i++;
-
- dest = buffer;
- for(x = 0; x < 256; x++)
- for(y = 0; y < 256; y++)
- {
- *dest++ = 0xff000000;
- }
-
- /* red */
- xo = 128 + 48 * sin(0.02 * i);
- yo = 128 + 48 * cos(0.03 * i);
- for(z = 0; z < 240; z++)
- draw_circle(buffer, xo, yo, z, 0x00ff0000, 200 << 16);
-
- /* green */
- xo = 128 + 48 * sin(2 + 0.06 * i);
- yo = 128 + 48 * cos(2 + 0.05 * i);
- for(z = 0; z < 240; z++)
- draw_circle(buffer, xo, yo, z, 0x0000ff00, 200 << 8);
-
- /* blue */
- xo = 128 + 48 * sin(1 + 0.04 * i);
- yo = 128 + 48 * cos(1 + 0.03 * i);
- for(z = 0; z < 240; z++)
- draw_circle(buffer, xo, yo, z, 0x000000ff, 200);
-
- bitmap = caca_create_bitmap(32, 256, 256, 4 * 256, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000);
- caca_draw_bitmap(0, 0, caca_get_width() - 1, caca_get_height() - 1,
- bitmap, (char *)buffer);
- caca_free_bitmap(bitmap);
- }
-
- static void draw_circle(int *buffer, int x, int y, int r, int mask, int val)
- {
- int t, dx, dy;
-
- #define POINT(X,Y) \
- buffer[(X) + 256 * (Y)] = 0xff000000 | (buffer[(X) + 256 * (Y)] & ~mask) | val;
-
- for(t = 0, dx = 0, dy = r; dx <= dy; dx++)
- {
- POINT(x - dx / 3, y - dy / 3);
- POINT(x + dx / 3, y - dy / 3);
- POINT(x - dx / 3, y + dy / 3);
- POINT(x + dx / 3, y + dy / 3);
-
- POINT(x - dy / 3, y - dx / 3);
- POINT(x + dy / 3, y - dx / 3);
- POINT(x - dy / 3, y + dx / 3);
- POINT(x + dy / 3, y + dx / 3);
-
- t += t > 0 ? dx - dy-- : dx;
- }
- }
|