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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-08-03 16:04:48 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-08-03 16:04:48 +0000 |
commit | 4a934b34d9f91e136d417551111a2c06b1f5c327 (patch) | |
tree | 63babfcb60345875f3ae20b676c94761eb47b30a /apps/examples/nxlines/nxlines_bkgd.c | |
parent | 0597a9446b75ebcbd07d1503f5b70c50f8e36967 (diff) | |
download | nuttx-4a934b34d9f91e136d417551111a2c06b1f5c327.tar.gz nuttx-4a934b34d9f91e136d417551111a2c06b1f5c327.tar.bz2 nuttx-4a934b34d9f91e136d417551111a2c06b1f5c327.zip |
Fix numerous errors in trapezoid rendering and wide line drawing algorithms
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3840 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'apps/examples/nxlines/nxlines_bkgd.c')
-rw-r--r-- | apps/examples/nxlines/nxlines_bkgd.c | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/apps/examples/nxlines/nxlines_bkgd.c b/apps/examples/nxlines/nxlines_bkgd.c new file mode 100644 index 000000000..d7666ee48 --- /dev/null +++ b/apps/examples/nxlines/nxlines_bkgd.c @@ -0,0 +1,271 @@ +/**************************************************************************** + * examples/nxlines/nxlines_bkgd.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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 <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <debug.h> +#include <fixedmath.h> + +#include <nuttx/nx/nx.h> +#include <nuttx/nx/nxglib.h> + +#include "nxlines.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +#ifndef MIN +# define MIN(a,b) (a < b ? a : b) +#endif + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +static void nxlines_redraw(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect, + bool morem, FAR void *arg); +static void nxlines_position(NXWINDOW hwnd, FAR const struct nxgl_size_s *size, + FAR const struct nxgl_point_s *pos, + FAR const struct nxgl_rect_s *bounds, + FAR void *arg); +#ifdef CONFIG_NX_MOUSE +static void nxlines_mousein(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos, + uint8_t buttons, FAR void *arg); +#endif + +#ifdef CONFIG_NX_KBD +static void nxlines_kbdin(NXWINDOW hwnd, uint8_t nch, FAR const uint8_t *ch, + FAR void *arg); +#endif + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/* Background window call table */ + +const struct nx_callback_s g_bgcb = +{ + nxlines_redraw, /* redraw */ + nxlines_position /* position */ +#ifdef CONFIG_NX_MOUSE + , nxlines_mousein /* mousein */ +#endif +#ifdef CONFIG_NX_KBD + , nxlines_kbdin /* my kbdin */ +#endif +}; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nxlines_redraw + ****************************************************************************/ + +static void nxlines_redraw(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect, + bool more, FAR void *arg) +{ + gvdbg("hwnd=%p rect={(%d,%d),(%d,%d)} more=%s\n", + hwnd, rect->pt1.x, rect->pt1.y, rect->pt2.x, rect->pt2.y, + more ? "true" : "false"); +} + +/**************************************************************************** + * Name: nxlines_position + ****************************************************************************/ + +static void nxlines_position(NXWINDOW hwnd, FAR const struct nxgl_size_s *size, + FAR const struct nxgl_point_s *pos, + FAR const struct nxgl_rect_s *bounds, + FAR void *arg) +{ + /* Report the position */ + + gvdbg("hwnd=%p size=(%d,%d) pos=(%d,%d) bounds={(%d,%d),(%d,%d)}\n", + hwnd, size->w, size->h, pos->x, pos->y, + bounds->pt1.x, bounds->pt1.y, bounds->pt2.x, bounds->pt2.y); + + /* Have we picked off the window bounds yet? */ + + if (!g_nxlines.havepos) + { + /* Save the background window handle */ + + g_nxlines.hbkgd = hwnd; + + /* Save the window limits */ + + g_nxlines.xres = bounds->pt2.x + 1; + g_nxlines.yres = bounds->pt2.y + 1; + + g_nxlines.havepos = true; + sem_post(&g_nxlines.sem); + gvdbg("Have xres=%d yres=%d\n", g_nxlines.xres, g_nxlines.yres); + } +} + +/**************************************************************************** + * Name: nxlines_mousein + ****************************************************************************/ + +#ifdef CONFIG_NX_MOUSE +static void nxlines_mousein(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos, + uint8_t buttons, FAR void *arg) +{ + message("nxlines_mousein: hwnd=%p pos=(%d,%d) button=%02x\n", + hwnd, pos->x, pos->y, buttons); +} +#endif + +/**************************************************************************** + * Name: nxlines_kbdin + ****************************************************************************/ + +#ifdef CONFIG_NX_KBD +static void nxlines_kbdin(NXWINDOW hwnd, uint8_t nch, FAR const uint8_t *ch, + FAR void *arg) +{ + gvdbg("hwnd=%p nch=%d\n", hwnd, nch); + + /* In this example, there is no keyboard so a keyboard event is not + * expected. + */ + + message("nxlines_kbdin: Unexpected keyboard callback\n"); +} +#endif + + /**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nxlinex_test + * + * Description: + * Print "Hello, World!" in the center of the display. + * + ****************************************************************************/ + +void nxlinex_test(NXWINDOW hwnd) +{ + struct nxgl_vector_s vector; + struct nxgl_vector_s previous; + nxgl_mxpixel_t color[CONFIG_NX_NPLANES]; + nxgl_coord_t xcenter; + nxgl_coord_t ycenter; + nxgl_coord_t radius; + nxgl_coord_t halfx; + nxgl_coord_t halfy; + b16_t angle; + int ret; + + /* Get the radius and center of the circle */ + + radius = MIN(g_nxlines.yres, g_nxlines.xres) >> 1; + xcenter = g_nxlines.xres >> 1; + ycenter = g_nxlines.yres >> 1; + + angle = 0; + previous.pt1.x = xcenter; + previous.pt1.y = ycenter; + previous.pt2.x = xcenter; + previous.pt2.y = ycenter; + + for (;;) + { + /* Determine the position of the line on this pass */ + + halfx = b16toi(b16muli(b16sin(angle), radius)); + halfy = b16toi(b16muli(b16cos(angle), radius)); + + vector.pt1.x = xcenter + halfx; + vector.pt1.y = ycenter + halfy; + vector.pt2.x = xcenter - halfx; + vector.pt2.y = ycenter - halfy; + + message("Angle: %04x vector: (%d,%d)->(%d,%d)\n", + angle, vector.pt1.x, vector.pt1.y, vector.pt2.x, vector.pt2.y); + + /* Clear the previous line */ + + color[0] = CONFIG_EXAMPLES_NXLINES_BGCOLOR; + ret = nx_drawline((NXWINDOW)hwnd, &previous, CONFIG_EXAMPLES_NXLINES_LINEWIDTH, color); + if (ret < 0) + { + message("nxlinex_test: nx_drawline failed clearing: %d\n", ret); + } + + /* Draw the new line */ + + color[0] = CONFIG_EXAMPLES_NXLINES_LINECOLOR; + ret = nx_drawline((NXWINDOW)hwnd, &vector, CONFIG_EXAMPLES_NXLINES_LINEWIDTH, color); + if (ret < 0) + { + message("nxlinex_test: nx_drawline failed clearing: %d\n", ret); + } + + /* Set up for the next time throught the loop then sleep for a bit. */ + + angle += b16PI / 16; /* 32 angular positions in full circle */ + if (angle > (31 * (2 * b16PI) / 16)) /* Wrap back to zero.. allowing for slop */ + { + angle = 0; + } + + memcpy(&previous, &vector, sizeof(struct nxgl_vector_s)); + usleep(500*1000); + } +} |