diff options
Diffstat (limited to 'nuttx/graphics/nxbe/nxbe_filltrapezoid.c')
| -rw-r--r-- | nuttx/graphics/nxbe/nxbe_filltrapezoid.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/nuttx/graphics/nxbe/nxbe_filltrapezoid.c b/nuttx/graphics/nxbe/nxbe_filltrapezoid.c new file mode 100644 index 000000000..68dad838c --- /dev/null +++ b/nuttx/graphics/nxbe/nxbe_filltrapezoid.c @@ -0,0 +1,173 @@ +/**************************************************************************** + * graphics/nxbe/nxbe_filltrapezoid.c + * + * Copyright (C) 2008-2009, 2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <fixedmath.h> +#include <nuttx/nx/nxglib.h> + +#include "nxbe.h" + +/**************************************************************************** + * Pre-Processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +struct nxbe_filltrap_s +{ + struct nxbe_clipops_s cops; + struct nxgl_trapezoid_s trap; + nxgl_mxpixel_t color; +}; + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nxbe_clipfilltrapezoid + * + * Description: + * Called from nxbe_clipper() to performed the fill operation on visible portions + * of the rectangle. + * + ****************************************************************************/ + +static void nxbe_clipfilltrapezoid(FAR struct nxbe_clipops_s *cops, + FAR struct nxbe_plane_s *plane, + FAR const struct nxgl_rect_s *rect) +{ + struct nxbe_filltrap_s *fillinfo = (struct nxbe_filltrap_s *)cops; + plane->filltrapezoid(&plane->pinfo, &fillinfo->trap, rect, fillinfo->color); +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nxbe_filltrapezoid + * + * Description: + * Fill the specified rectangle in the window with the specified color + * + * Input Parameters: + * wnd - The window structure reference + * clip - Clipping region (in relative window coordinates) + * rect - The location to be filled (in relative window coordinates) + * col - The color to use in the fill + * + * Return: + * None + * + ****************************************************************************/ + +void nxbe_filltrapezoid(FAR struct nxbe_window_s *wnd, + FAR const struct nxgl_rect_s *clip, + FAR const struct nxgl_trapezoid_s *trap, + nxgl_mxpixel_t color[CONFIG_NX_NPLANES]) +{ + struct nxbe_filltrap_s info; + struct nxgl_rect_s remaining; + int i; + +#ifdef CONFIG_DEBUG + if (!wnd || !trap) + { + return; + } +#endif + + /* Offset the trapezoid by the window origin to position it within + * the framebuffer region + */ + + nxgl_trapoffset(&info.trap, trap, wnd->bounds.pt1.x, wnd->bounds.pt1.y); + + /* Create a bounding box that contains the trapezoid */ + + remaining.pt1.x = b16toi(ngl_min(info.trap.top.x1, info.trap.bot.x1)); + remaining.pt1.y = info.trap.top.y; + remaining.pt2.x = b16toi(ngl_max(info.trap.top.x2, info.trap.bot.x2)); + remaining.pt2.y = info.trap.bot.y; + + /* Clip to any user specified clipping window */ + + if (clip) + { + struct nxgl_rect_s tmp; + nxgl_rectoffset(&tmp, clip, wnd->bounds.pt1.x, wnd->bounds.pt1.y); + nxgl_rectintersect(&remaining, &remaining, &tmp); + } + + /* Clip to the limits of the window and of the background screen */ + + nxgl_rectintersect(&remaining, &remaining, &wnd->bounds); + nxgl_rectintersect(&remaining, &remaining, &wnd->be->bkgd.bounds); + + if (!nxgl_nullrect(&remaining)) + { + info.cops.visible = nxbe_clipfilltrapezoid; + info.cops.obscured = nxbe_clipnull; + + /* Then process each color plane */ + +#if CONFIG_NX_NPLANES > 1 + for (i = 0; i < wnd->be->vinfo.nplanes; i++) +#else + i = 0; +#endif + { + info.color = color[i]; + nxbe_clipper(wnd->above, &remaining, NX_CLIPORDER_DEFAULT, + &info.cops, &wnd->be->plane[i]); + } + } +} |