diff options
| -rw-r--r-- | libdimension/Makefile.am | 1 | ||||
| -rw-r--r-- | libdimension/canvas_pigment.c | 58 | ||||
| -rw-r--r-- | libdimension/dimension/pigments.h | 2 |
3 files changed, 61 insertions, 0 deletions
diff --git a/libdimension/Makefile.am b/libdimension/Makefile.am index 9774202..d32643a 100644 --- a/libdimension/Makefile.am +++ b/libdimension/Makefile.am @@ -52,6 +52,7 @@ libdimension_la_SOURCES = $(nobase_include_HEADERS) \ bvst.h \ camera.c \ canvas.c \ + canvas_pigment.c \ color.c \ cube.c \ csg.c \ diff --git a/libdimension/canvas_pigment.c b/libdimension/canvas_pigment.c new file mode 100644 index 0000000..b4c6823 --- /dev/null +++ b/libdimension/canvas_pigment.c @@ -0,0 +1,58 @@ +/************************************************************************* + * Copyright (C) 2010 Tavian Barnes <tavianator@gmail.com> * + * * + * This file is part of The Dimension Library. * + * * + * The Dimension Library 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 3 of the * + * License, or (at your option) any later version. * + * * + * The Dimension Library 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, see * + * <http://www.gnu.org/licenses/>. * + *************************************************************************/ + +#include "dimension.h" + +/* Canvas color pigment callback */ +static dmnsn_color dmnsn_canvas_pigment_fn(const dmnsn_pigment *pigment, + dmnsn_vector v); +static void dmnsn_canvas_pigment_free_fn(void *ptr); + +/* Create a canvas color */ +dmnsn_pigment * +dmnsn_new_canvas_pigment(dmnsn_canvas *canvas) +{ + dmnsn_pigment *pigment = dmnsn_new_pigment(); + pigment->pigment_fn = &dmnsn_canvas_pigment_fn; + pigment->free_fn = &dmnsn_canvas_pigment_free_fn; + pigment->ptr = canvas; + return pigment; +} + +/* Canvas color callback */ +static dmnsn_color +dmnsn_canvas_pigment_fn(const dmnsn_pigment *pigment, dmnsn_vector v) +{ + dmnsn_canvas *canvas = pigment->ptr; + + int x = v.x*(canvas->x - 1) + 0.5; + int y = v.x*(canvas->x - 1) + 0.5; + if (x >= 0 && y >= 0 && x < canvas->x && y < canvas->y) { + return dmnsn_get_pixel(canvas, x, y); + } else { + return dmnsn_black; + } +} + +static void +dmnsn_canvas_pigment_free_fn(void *ptr) +{ + dmnsn_delete_canvas(ptr); +} diff --git a/libdimension/dimension/pigments.h b/libdimension/dimension/pigments.h index f99b6c9..c8d6a39 100644 --- a/libdimension/dimension/pigments.h +++ b/libdimension/dimension/pigments.h @@ -27,5 +27,7 @@ /* A solid color */ dmnsn_pigment *dmnsn_new_solid_pigment(dmnsn_color color); +/* An image map */ +dmnsn_pigment *dmnsn_new_canvas_pigment(dmnsn_canvas *canvas); #endif /* DIMENSION_PIGMENTS_H */ |