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Diffstat (limited to 'nuttx/graphics/nxglib/fb/nxglib_filltrapezoid.c')
-rw-r--r--nuttx/graphics/nxglib/fb/nxglib_filltrapezoid.c285
1 files changed, 0 insertions, 285 deletions
diff --git a/nuttx/graphics/nxglib/fb/nxglib_filltrapezoid.c b/nuttx/graphics/nxglib/fb/nxglib_filltrapezoid.c
deleted file mode 100644
index 7623bf84f..000000000
--- a/nuttx/graphics/nxglib/fb/nxglib_filltrapezoid.c
+++ /dev/null
@@ -1,285 +0,0 @@
-/****************************************************************************
- * graphics/nxglib/fb/nxglib_filltrapezoid.c
- *
- * Copyright (C) 2008-2012 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 <stdint.h>
-#include <fixedmath.h>
-
-#include <nuttx/fb.h>
-#include <nuttx/nx/nxglib.h>
-
-#include "nxglib_bitblit.h"
-
-/****************************************************************************
- * Pre-Processor Definitions
- ****************************************************************************/
-
-#ifndef NXGLIB_SUFFIX
-# error "NXGLIB_SUFFIX must be defined before including this header file"
-#endif
-
-/****************************************************************************
- * Private Types
- ****************************************************************************/
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-/****************************************************************************
- * Public Data
- ****************************************************************************/
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: nxglib_filltrapezoid_*bpp
- *
- * Descripton:
- * Fill a trapezoidal region in the framebuffer memory with a fixed color.
- * Clip the trapezoid to lie within a boundng box. This is useful for
- * drawing complex shapes that can be broken into a set of trapezoids.
- *
- ****************************************************************************/
-
-void NXGL_FUNCNAME(nxgl_filltrapezoid,NXGLIB_SUFFIX)(
- FAR struct fb_planeinfo_s *pinfo,
- FAR const struct nxgl_trapezoid_s *trap,
- FAR const struct nxgl_rect_s *bounds,
- NXGL_PIXEL_T color)
-{
- unsigned int stride;
- unsigned int width;
- FAR uint8_t *dest;
- FAR uint8_t *line;
- int nrows;
- b16_t x1;
- b16_t x2;
- nxgl_coord_t y1;
- nxgl_coord_t y2;
- b16_t dx1dy;
- b16_t dx2dy;
-
-#if NXGLIB_BITSPERPIXEL < 8
- uint8_t mpixel = NXGL_MULTIPIXEL(color);
- uint8_t mask;
- int lnlen;
-#endif
-
- /* Get the width of the framebuffer in bytes */
-
- stride = pinfo->stride;
-
- /* Get the top run position and the number of rows to draw */
-
- x1 = trap->top.x1;
- x2 = trap->top.x2;
-
- /* Calculate the number of rows to render */
-
- y1 = trap->top.y;
- y2 = trap->bot.y;
- nrows = y2 - y1 + 1;
-
- /* Calculate the slope of the left and right side of the trapezoid */
-
- if (nrows > 1)
- {
- dx1dy = b16divi((trap->bot.x1 - x1), nrows - 1);
- dx2dy = b16divi((trap->bot.x2 - x2), nrows - 1);
- }
- else
- {
- /* The trapezoid is a run! Use the average width. */
-
- x1 = (x1 + trap->bot.x1) >> 1;
- x2 = (x2 + trap->bot.x2) >> 1;
- dx1dy = 0;
- dx2dy = 0;
- }
-
- /* Perform vertical clipping */
-
- if (y1 < bounds->pt1.y)
- {
- /* Is the entire trapezoid "above" the clipping window? */
-
- if (y2 < bounds->pt1.y)
- {
- /* Yes.. then do nothing */
-
- return;
- }
-
- /* Calculate the x values for the new top run */
-
- int dy = bounds->pt1.y - y1;
- x1 += dy * dx1dy;
- x2 += dy * dx2dy;
-
- /* Clip and re-calculate the number of rows to render */
-
- y1 = bounds->pt1.y;
- nrows = y2 - y1 + 1;
- }
-
- if (y2 > bounds->pt2.y)
- {
- /* Is the entire trapezoid "below" the clipping window? */
-
- if (y1 > bounds->pt2.y)
- {
- /* Yes.. then do nothing */
-
- return;
- }
-
- /* Clip and re-calculate the number of rows to render */
-
- y2 = bounds->pt2.y;
- nrows = y2 - y1 + 1;
- }
-
- /* Get the address of the first byte on the first line */
-
- line = pinfo->fbmem + y1 * stride ;
-
- /* Then fill the trapezoid line-by-line */
-
- while (nrows--)
- {
- int ix1;
- int ix2;
-
- /* Handle the special case where the sides cross (as in an hourglass) */
-
- if (x1 > x2)
- {
- b16_t tmp;
- ngl_swap(x1, x2, tmp);
- ngl_swap(dx1dy, dx2dy, tmp);
- }
-
- /* Convert the positions to integer */
-
- ix1 = b16toi(x1);
- ix2 = b16toi(x2);
-
- /* Handle some corner cases where we draw nothing. Otherwise, we will
- * always draw at least one pixel.
- */
-
- if (x1 <= x2 && ix2 >= bounds->pt1.x && ix1 <= bounds->pt2.x)
- {
- /* Get a clipped copies of the starting and ending X positions. This
- * clipped truncates "down" and gives the quantized pixel holding the
- * fractional X position
- */
-
- ix1 = ngl_clipl(ix1, bounds->pt1.x);
- ix2 = ngl_clipr(ix2, bounds->pt2.x);
-
- /* Get the run length for the clipped row */
-
- width = ix2 - ix1 + 1;
-
-#if NXGLIB_BITSPERPIXEL < 8
- /* Handle masking of the fractional initial byte */
-
-#ifdef CONFIG_NX_PACKEDMSFIRST
- mask = (uint8_t)(0xff >> (8 - NXGL_REMAINDERX(ix1));
-#else
- mask = (uint8_t)(0xff << (8 - NXGL_REMAINDERX(ix1)));
-#endif
- dest = line;
- lnlen = width;
-
- if (lnlen > 1 && mask)
- {
- dest[0] = (dest[0] & ~mask) | (mpixel & mask);
- mask = 0xff;
- dest++;
- lnlen--;
- }
-
- /* Handle masking of the fractional final byte */
-
-#ifdef CONFIG_NX_PACKEDMSFIRST
- mask &= (uint8_t)(0xff << (8 - NXGL_REMAINDERX(ix2)));
-#else
- mask &= (uint8_t)(0xff >> (8 - NXGL_REMAINDERX(ix2)));
-#endif
- if (lnlen > 0 && mask)
- {
- dest[lnlen-1] = (dest[lnlen-1] & ~mask) | (mpixel & mask);
- lnlen--;
- }
-
- /* Handle all of the unmasked bytes in-between */
-
- if (lnlen > 0)
- {
- NXGL_MEMSET(dest, (NXGL_PIXEL_T)color, lnlen);
- }
-
-#else
- /* Then draw the run from (line + ix1) to (line + ix2) */
-
- dest = line + NXGL_SCALEX(ix1);
- NXGL_MEMSET(dest, (NXGL_PIXEL_T)color, width);
-#endif
- }
-
- /* Move to the start of the next line */
-
- line += stride;
-
- /* Add the dx/dy value to get the run positions on the next row */
-
- x1 += dx1dy;
- x2 += dx2dy;
- }
-}
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