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Diffstat (limited to 'nuttx/graphics/nxglib/lcd/nxglib_filltrapezoid.c')
-rw-r--r--nuttx/graphics/nxglib/lcd/nxglib_filltrapezoid.c259
1 files changed, 0 insertions, 259 deletions
diff --git a/nuttx/graphics/nxglib/lcd/nxglib_filltrapezoid.c b/nuttx/graphics/nxglib/lcd/nxglib_filltrapezoid.c
deleted file mode 100644
index 3ba44b34a..000000000
--- a/nuttx/graphics/nxglib/lcd/nxglib_filltrapezoid.c
+++ /dev/null
@@ -1,259 +0,0 @@
-/****************************************************************************
- * graphics/nxglib/lcd/nxglib_filltrapezoid.c
- *
- * Copyright (C) 2010-2012 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/lcd/lcd.h>
-#include <nuttx/nx/nxglib.h>
-
-#include "nxglib_bitblit.h"
-#include "nxglib_fillrun.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 LCD 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 lcd_planeinfo_s *pinfo,
- FAR const struct nxgl_trapezoid_s *trap,
- FAR const struct nxgl_rect_s *bounds,
- NXGL_PIXEL_T color)
-{
- unsigned int ncols;
- unsigned int topy;
- unsigned int boty;
- unsigned int row;
- unsigned int botw;
- b16_t topx1;
- b16_t topx2;
- b16_t botx1;
- b16_t botx2;
- b16_t dx1dy;
- b16_t dx2dy;
- int dy;
- int ix1;
- int ix2;
-
- /* Get the top run endpoints */
-
- topx1 = trap->top.x1;
- topx2 = trap->top.x2;
-
- /* Calculate the number of rows to render */
-
- topy = trap->top.y;
- boty = trap->bot.y;
-
- /* Get the bottom run endpoints */
-
- botx1 = trap->bot.x1;
- botx2 = trap->bot.x2;
-
- /* Calculate the slope of the left and right side of the trapezoid */
-
- dy = boty - topy;
- if (dy > 0)
- {
- dx1dy = b16divi((botx1 - topx1), dy);
- dx2dy = b16divi((botx2 - topx2), dy);
- }
- else
- {
- /* The trapezoid is a run! Use the average width. */
-
- topx1 = (topx1 + botx1) >> 1;
- topx2 = (topx2 + botx2) >> 1;
- botx1 = topx1;
- botx2 = topx2;
- dx1dy = 0;
- dx2dy = 0;
- }
-
- /* Perform vertical clipping */
-
- if (topy < bounds->pt1.y)
- {
- /* Is the entire trapezoid "above" the clipping window? */
-
- if (boty < bounds->pt1.y)
- {
- /* Yes.. then do nothing */
-
- return;
- }
-
- /* Calculate the x values for the new top run */
-
- dy = bounds->pt1.y - topy;
- topx1 += dy * dx1dy;
- topx2 += dy * dx2dy;
-
- /* Clip the top row to render */
-
- topy = bounds->pt1.y;
- }
-
- if (boty > bounds->pt2.y)
- {
- /* Is the entire trapezoid "below" the clipping window? */
-
- if (topy > bounds->pt2.y)
- {
- /* Yes.. then do nothing */
-
- return;
- }
-
- /* Calculate the x values for the new bottom run */
-
- dy = boty - bounds->pt2.y;
- botx1 -= dy * dx1dy;
- botx2 -= dy * dx2dy;
-
- /* Clip the bottom row to render */
-
- boty = bounds->pt2.y;
- }
-
- /* Handle the special case where the sides cross (as in an hourglass) */
-
- if (botx1 > botx2)
- {
- b16_t tmp;
- ngl_swap(botx1, botx2, tmp);
- }
-
- /* Fill the run buffer for the maximum run that we will need */
-
- ix1 = b16toi(topx1);
- ix1 = ngl_clipl(ix1, bounds->pt1.x);
- ix2 = b16toi(topx2);
- ix2 = ngl_clipr(ix2, bounds->pt2.x);
- ncols = ix2 - ix1 + 1;
-
- ix1 = b16toi(botx1);
- ix1 = ngl_clipl(ix1, bounds->pt1.x);
- ix2 = b16toi(botx2);
- ix2 = ngl_clipr(ix2, bounds->pt2.x);
- botw = ix2 - ix1 + 1;
-
- if (ncols < botw)
- {
- ncols = botw;
- }
-
- NXGL_FUNCNAME(nxgl_fillrun,NXGLIB_SUFFIX)((NXGLIB_RUNTYPE*)pinfo->buffer, color, ncols);
-
- /* Then fill the trapezoid row-by-row */
-
- for (row = topy; row <= boty; row++)
- {
- /* Handle the special case where the sides cross (as in an hourglass) */
-
- if (topx1 > topx2)
- {
- b16_t tmp;
- ngl_swap(topx1, topx2, tmp);
- ngl_swap(dx1dy, dx2dy, tmp);
- }
-
- /* Convert the positions to integer and get the run width, clipping to
- * fit within the bounding box.
- */
-
- ix1 = b16toi(topx1);
- ix1 = ngl_clipl(ix1, bounds->pt1.x);
- ix2 = b16toi(topx2);
- ix2 = ngl_clipr(ix2, bounds->pt2.x);
-
- /* Handle some corner cases where we draw nothing. Otherwise, we will
- * always draw at least one pixel.
- */
-
- if (ix1 <= ix2)
- {
- /* Then draw the run from ix1 to ix2 at row */
-
- ncols = ix2 - ix1 + 1;
- (void)pinfo->putrun(row, ix1, pinfo->buffer, ncols);
- }
-
- /* Add the dx/dy value to get the run positions on the next row */
-
- topx1 += dx1dy;
- topx2 += dx2dy;
- }
-}
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