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Tweaking "Light" effect

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Bill Kendrick 2023-05-08 21:49:59 -07:00
parent fcb392aec3
commit f8358530ff
3 changed files with 7 additions and 3 deletions
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5
docs/CHANGES.txt
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@ -6,7 +6,7 @@ Copyright (c) 2002-2023
Various contributors (see below, and AUTHORS.txt) Various contributors (see below, and AUTHORS.txt)
https://tuxpaint.org/ https://tuxpaint.org/
2023.May.5 (0.9.30) 2023.May.8 (0.9.30)
* Improvements to Stamp tool: * Improvements to Stamp tool:
--------------------------- ---------------------------
* Avoid playing English descriptive sound for a stamp * Avoid playing English descriptive sound for a stamp
@ -98,6 +98,9 @@ https://tuxpaint.org/
h/t Pere h/t Pere
Bill Kendrick <bill@newbreedsoftware.com> Bill Kendrick <bill@newbreedsoftware.com>
* Light: Better shape to the effect.
Bill Kendrick <bill@newbreedsoftware.com>
* New Magic Tools: * New Magic Tools:
---------------- ----------------
* Rainbow Cycle: Changes colors each time you use it * Rainbow Cycle: Changes colors each time you use it

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docs/html/images/magic_examples/light.png
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magic/src/light.c
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@ -23,7 +23,7 @@
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
(See COPYING.txt) (See COPYING.txt)
Last updated: April 20, 2023 Last updated: May 8, 2023
*/ */
#include <stdio.h> #include <stdio.h>
@ -146,7 +146,8 @@ static void do_light(void *ptr, int which ATTRIBUTE_UNUSED,
SDL_GetRGB(pix, canvas->format, &r, &g, &b); SDL_GetRGB(pix, canvas->format, &r, &g, &b);
adj = (((float)light_radius - 0.01) - sqrt(abs(xx * yy))) / (16.0 * (float)light_radius); adj = sqrt(light_radius - sqrt((xx * xx) + (yy * yy))) / 64.0;
// adj = (((float)light_radius - 0.01) - sqrt(abs(xx * yy))) / (16.0 * (float)light_radius);
api->rgbtohsv(r, g, b, &h, &s, &v); api->rgbtohsv(r, g, b, &h, &s, &v);