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Added Light and Shift magic tools.

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This commit is contained in:
William Kendrick 2007-08-10 06:53:36 +00:00
parent 8b11978f23
commit a97bad1e3d
5 changed files with 493 additions and 0 deletions
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<body><html><head><title>Tux Paint "Magic" Tool:
Shift
</title>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
</head>
<body bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#FF0000"
alink="#FF00FF">
<h1 align=center">Tux Paint "Magic" Tool:
Shift
</h1>
<p>
This shifts your picture around the canvas. Anything that gets
shifts off an edge reappears on the opposite edge.
</p>
</body></html>

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Tux Paint "Magic" Tool: Shift
This shifts your picture around the canvas. Anything that gets shifts off
an edge reappears on the opposite edge.

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/*
light.c
Light Magic Tool Plugin
Tux Paint - A simple drawing program for children.
Copyright (c) 2002-2007 by Bill Kendrick and others; see AUTHORS.txt
bill@newbreedsoftware.com
http://www.tuxpaint.org/
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU 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 General Public License for more details.
You should have received a copy of the GNU 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
(See COPYING.txt)
Last updated: August 9, 2007
$Id$
*/
#include <stdio.h>
#include <string.h>
#include <libintl.h>
#include "tp_magic_api.h"
#include "SDL_image.h"
#include "SDL_mixer.h"
#include "math.h"
/* Our globals: */
Mix_Chunk * light1_snd, * light2_snd;
float light_h, light_s, light_v;
Uint32 light_api_version(void) { return(TP_MAGIC_API_VERSION); }
// No setup required:
int light_init(magic_api * api)
{
char fname[1024];
snprintf(fname, sizeof(fname), "%s/sounds/magic/light1.ogg",
api->data_directory);
light1_snd = Mix_LoadWAV(fname);
snprintf(fname, sizeof(fname), "%s/sounds/magic/light2.ogg",
api->data_directory);
light2_snd = Mix_LoadWAV(fname);
return(1);
}
// We have multiple tools:
int light_get_tool_count(magic_api * api)
{
return(1);
}
// Load our icons:
SDL_Surface * light_get_icon(magic_api * api, int which)
{
char fname[1024];
snprintf(fname, sizeof(fname), "%s/images/magic/light.png",
api->data_directory);
return(IMG_Load(fname));
}
// Return our names, localized:
char * light_get_name(magic_api * api, int which)
{
return(strdup(gettext("Light")));
}
// Return our descriptions, localized:
char * light_get_description(magic_api * api, int which)
{
return(strdup(gettext("Click and drag to draw a beam of light on your picture.")));
}
// Do the effect:
void do_light(void * ptr, int which, SDL_Surface * canvas, SDL_Surface * last,
int x, int y)
{
magic_api * api = (magic_api *) ptr;
int xx, yy;
Uint32 pix;
Uint8 r, g, b;
float h, s, v, new_h, new_s, new_v;
float adj;
for (yy = -8; yy < 8; yy++)
{
for (xx = -8; xx < 8; xx++)
{
if (api->in_circle(xx, yy, 8))
{
pix = api->getpixel(canvas, x + xx, y + yy);
SDL_GetRGB(pix, canvas->format, &r, &g, &b);
adj = (7.99 - sqrt(abs(xx * yy))) / 128.0;
api->rgbtohsv(r, g, b, &h, &s, &v);
v = min((float) 1.0, v + adj);
if (light_h == -1 && h == -1)
{
new_h = -1;
new_s = 0;
new_v = v;
}
else if (light_h == -1)
{
new_h = h;
new_s = max(0.0, s - adj / 2.0);
new_v = v;
}
else if (h == -1)
{
new_h = light_h;
new_s = max(0.0, light_s - adj / 2.0);
new_v = v;
}
else
{
new_h = (light_h + h) / 2;
new_s = max(0.0, s - adj / 2.0);
new_v = v;
}
api->hsvtorgb(new_h, new_s, new_v, &r, &g, &b);
api->putpixel(canvas, x + xx, y + yy,
SDL_MapRGB(canvas->format, r, g, b));
}
}
}
}
// Affect the canvas on drag:
void light_drag(magic_api * api, int which, SDL_Surface * canvas,
SDL_Surface * last, int ox, int oy, int x, int y,
SDL_Rect * update_rect)
{
api->line((void *) api, which, canvas, last, ox, oy, x, y, 1, do_light);
if (ox > x) { int tmp = ox; ox = x; x = tmp; }
if (oy > y) { int tmp = oy; oy = y; y = tmp; }
update_rect->x = ox - 8;
update_rect->y = oy - 8;
update_rect->w = (x + 8) - update_rect->x;
update_rect->h = (y + 8) - update_rect->h;
api->playsound(light1_snd, (x * 255) / canvas->w, 255);
}
// Affect the canvas on click:
void light_click(magic_api * api, int which,
SDL_Surface * canvas, SDL_Surface * last,
int x, int y, SDL_Rect * update_rect)
{
light_drag(api, which, canvas, last, x, y, x, y, update_rect);
}
// Affect the canvas on release:
void light_release(magic_api * api, int which,
SDL_Surface * canvas, SDL_Surface * last,
int x, int y, SDL_Rect * update_rect)
{
api->playsound(light2_snd, (x * 255) / canvas->w, 255);
}
// No setup happened:
void light_shutdown(magic_api * api)
{
if (light1_snd != NULL)
Mix_FreeChunk(light1_snd);
if (light2_snd != NULL)
Mix_FreeChunk(light2_snd);
}
// Record the color from Tux Paint:
void light_set_color(magic_api * api, Uint8 r, Uint8 g, Uint8 b)
{
api->rgbtohsv(r, g, b, &light_h, &light_s, &light_v);
}
// Use colors:
int light_requires_colors(magic_api * api, int which)
{
return 1;
}

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/*
shift.c
Shift Magic Tool Plugin
Tux Paint - A simple drawing program for children.
Copyright (c) 2002-2007 by Bill Kendrick and others; see AUTHORS.txt
bill@newbreedsoftware.com
http://www.tuxpaint.org/
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU 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 General Public License for more details.
You should have received a copy of the GNU 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
(See COPYING.txt)
Last updated: August 9, 2007
$Id$
*/
#include <stdio.h>
#include <string.h>
#include <libintl.h>
#include "tp_magic_api.h"
#include "SDL_image.h"
#include "SDL_mixer.h"
#include "math.h"
/* Our globals: */
int shift_x, shift_y;
Mix_Chunk * shift_snd;
Uint32 shift_api_version(void) { return(TP_MAGIC_API_VERSION); }
// No setup required:
int shift_init(magic_api * api)
{
char fname[1024];
snprintf(fname, sizeof(fname), "%s/sounds/magic/shift.ogg",
api->data_directory);
shift_snd = Mix_LoadWAV(fname);
return(1);
}
// We have multiple tools:
int shift_get_tool_count(magic_api * api)
{
return(1);
}
// Load our icons:
SDL_Surface * shift_get_icon(magic_api * api, int which)
{
char fname[1024];
snprintf(fname, sizeof(fname), "%s/images/magic/shift.png",
api->data_directory);
return(IMG_Load(fname));
}
// Return our names, localized:
char * shift_get_name(magic_api * api, int which)
{
return(strdup(gettext("Shift")));
}
// Return our descriptions, localized:
char * shift_get_description(magic_api * api, int which)
{
return(strdup(gettext("Click and drag to shift your picture around on the canvas.")));
}
// Affect the canvas on drag:
void shift_drag(magic_api * api, int which, SDL_Surface * canvas,
SDL_Surface * last, int ox, int oy, int x, int y,
SDL_Rect * update_rect)
{
SDL_Rect dest;
int dx, dy;
if (ox == x && oy == y)
return; /* No-op */
dx = x - shift_x;
dy = y - shift_y;
while (dx < -canvas->w)
dx += canvas->w;
while (dx > canvas->w)
dx -= canvas->w;
while (dy < -canvas->h)
dy += canvas->h;
while (dy > canvas->h)
dy -= canvas->h;
/* Center */
dest.x = dx;
dest.y = dy;
SDL_BlitSurface(last, NULL, canvas, &dest);
if (dy > 0)
{
if (dx > 0)
{
/* Top Left */
dest.x = dx - canvas->w;
dest.y = dy - canvas->h;
SDL_BlitSurface(last, NULL, canvas, &dest);
}
/* Top */
dest.x = dx;
dest.y = dy - canvas->h;
SDL_BlitSurface(last, NULL, canvas, &dest);
if (dx < 0)
{
/* Top Right */
dest.x = dx + canvas->w;
dest.y = dy - canvas->h;
SDL_BlitSurface(last, NULL, canvas, &dest);
}
}
if (dx > 0)
{
/* Left */
dest.x = dx - canvas->w;
dest.y = dy;
SDL_BlitSurface(last, NULL, canvas, &dest);
}
if (dx < 0)
{
/* Right */
dest.x = dx + canvas->w;
dest.y = dy;
SDL_BlitSurface(last, NULL, canvas, &dest);
}
if (dy < 0)
{
if (dx > 0)
{
/* Bottom Left */
dest.x = dx - canvas->w;
dest.y = dy + canvas->h;
SDL_BlitSurface(last, NULL, canvas, &dest);
}
/* Bottom */
dest.x = dx;
dest.y = dy + canvas->h;
SDL_BlitSurface(last, NULL, canvas, &dest);
if (dx < 0)
{
/* Bottom Right */
dest.x = dx + canvas->w;
dest.y = dy + canvas->h;
SDL_BlitSurface(last, NULL, canvas, &dest);
}
}
/* Update everything! */
update_rect->x = 0;
update_rect->y = 0;
update_rect->w = canvas->w;
update_rect->h = canvas->h;
api->playsound(shift_snd, (x * 255) / canvas->w, 255);
}
// Affect the canvas on click:
void shift_click(magic_api * api, int which,
SDL_Surface * canvas, SDL_Surface * last,
int x, int y, SDL_Rect * update_rect)
{
shift_x = x;
shift_y = y;
}
// Affect the canvas on release:
void shift_release(magic_api * api, int which,
SDL_Surface * canvas, SDL_Surface * last,
int x, int y, SDL_Rect * update_rect)
{
}
// No setup happened:
void shift_shutdown(magic_api * api)
{
if (shift_snd != NULL)
Mix_FreeChunk(shift_snd);
}
// Record the color from Tux Paint:
void shift_set_color(magic_api * api, Uint8 r, Uint8 g, Uint8 b)
{
}
// Use colors:
int shift_requires_colors(magic_api * api, int which)
{
return 0;
}