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nuttx-apps/graphics/traveler/tools/tcledit/tcl_paint.c

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/*******************************************************************************
* apps/graphics/traveler/tools/tcledit/tcl_paint.c
*
* Copyright (C) 2016 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 <stdio.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <sys/ipc.h>
#ifndef NO_XSHM
# include <sys/shm.h>
# include <X11/extensions/XShm.h>
#endif
#include "trv_types.h"
#include "wld_debug.h"
#include "wld_mem.h"
#include "wld_bitmaps.h"
#include "wld_plane.h"
#include "wld_utils.h"
#include "tcl_x11graphics.h"
/*******************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define LINE_THICKNESS_DELTA 1
/*******************************************************************************
* Private Functions
****************************************************************************/
/*******************************************************************************
* Function: tcl_color_index
* Description:
***************************************************************************/
static int tcl_color_index(tcl_window_t *w)
{
int ndx;
if (g_edit_mode != EDITMODE_NEW)
{
ndx = POS_COLORS * NUM_COLORS;
}
else if (g_edit_plane == w->plane)
{
ndx = SEL_COLORS * NUM_COLORS;
}
else
{
ndx = NSEL_COLORS * NUM_COLORS;
}
return ndx;
}
/****************************************************************************
* Function: tcl_paint_rectangle
* Description:
***************************************************************************/
static void tcl_paint_rectangle(tcl_window_t *w, int hleft, int hright,
int vtop, int vbottom, dev_pixel_t pixel)
{
dev_pixel_t *rowstart;
dev_pixel_t *dest;
int row;
int col;
/* Paint from top to bottom */
rowstart = w->frameBuffer + vtop * w->width;
for (row = vtop; row <= vbottom; row++)
{
/* Paint from left to right */
dest = rowstart + hleft;
for (col = hleft; col <= hright; col++)
{
*dest++ = pixel;
}
rowstart += w->width;
}
}
/****************************************************************************
* Function: tcl_paint_coplanar_rectangle
* Description:
***************************************************************************/
static void tcl_paint_coplanar_rectangle(tcl_window_t *w,
rect_data_t *ptr, int hoffset,
int voffset, dev_pixel_t pixel)
{
int hleft;
int hright;
int vtop;
int vbottom;
/* Get the left side offset and verify that some part of the rectangle lies
* to the left of the right side of the display.
*/
hleft = ptr->hstart - hoffset;
if (hleft >= g_view_size)
{
return;
}
if (hleft < 0)
{
hleft = 0;
}
/* Get the right side offset and verify that some part of the rectangle lies
* to the right of the left side of the display.
*/
hright = ptr->hend - hoffset;
if (hright < 0)
{
return;
}
if (hright >= g_view_size)
{
hright = g_view_size - 1;
}
/* Get the top side offset and verify that some part of the rectangle lies
* above the bottom of the display.
*/
vtop = ptr->vstart - voffset;
if (vtop >= g_view_size)
{
return;
}
if (vtop < 0)
{
vtop = 0;
}
/* Get the bottom side offset and verify that some part of the rectangle lies
* below the top of the display.
*/
vbottom = ptr->vend - voffset;
if (vbottom < 0)
{
return;
}
if (vbottom >= g_view_size)
{
vbottom = g_view_size - 1;
}
/* If we are viewing the Z plane, then the vpos is "down" the screen from the
* top. Otherwise, it is "up" the screen from the bottom.
*/
if (w->plane != EDITPLANE_Z)
{
int vtmp = vbottom;
vbottom = g_view_size - vtop - 1;
vtop = g_view_size - vtmp - 1;
}
/* We now have some rectangle that we know is to fully on the display.
* Get the display positions of the rectangle
*/
hleft = (hleft) * w->width / g_view_size;
hright = (hright) * w->width / g_view_size;
vtop = (vtop) * w->height / g_view_size;
vbottom = (vbottom) * w->height / g_view_size;
/* Paint it */
tcl_paint_rectangle(w, hleft, hright, vtop, vbottom, pixel);
}
/****************************************************************************
* Function: tcl_paint_horizontal_rectangle
* Description:
***************************************************************************/
static int tcl_check_horizontal_rectangle(tcl_window_t *w, rect_data_t *ptr, int pos)
{
int posstart;
int posend;
/* Search the plane list for every place whose "level" component includes the
* current map level. This will be the vertical component of the rectangle
* in every case except for EDITPLANE_X:
*
* w->plane vhead level component EDITPLANE_X g_zplane_list H (= X) EDITPLANE_Y
* g_zplane_list V (= Y) EDITPLANE_Z g_yplane_list V (= Z)
*/
if (w->plane != EDITPLANE_X)
{
posstart = ptr->vstart;
posend = ptr->vend;
}
else
{
posstart = ptr->hstart;
posend = ptr->hend;
}
/* Verify the vertical rectangle intersects the viewing plane */
return ((posstart <= pos) && (posend >= pos));
}
/****************************************************************************
* Function: tcl_paint_horizontal_rectangle
* Description:
***************************************************************************/
static void tcl_paint_horizontal_rectangle(tcl_window_t *w, rect_data_t *ptr,
int hoffset, int voffset,
dev_pixel_t pixel)
{
int hleft;
int hright;
int vtop;
int vbottom;
/* Get the "vertical" position of the horizontal line. This will always be
* the plane component of the rectangle, but will have to be "flipped" if the
* viewing plane is not EDITPLANE_Z:
*
* w->plane vhead vertical component EDITPLANE_X g_zplane_list plane (= Z)
* EDITPLANE_Y g_zplane_list plane (= Z) EDITPLANE_Z g_yplane_list plane (= Y)
*/
vtop = ptr->plane - voffset;
if ((vtop < 0) || (vtop >= g_view_size))
{
return;
}
if (w->plane != EDITPLANE_Z)
{
vtop = g_view_size - vtop - 1;
}
/* Get the extent of the horizontal line. This will be the horizontal
* component of the rectangle in every case except when the viewing plane if
* EDITPLANE_X
*
* w->plane vhead horizontal component EDITPLANE_X g_zplane_list V (= Y) EDITPLANE_X
* g_zplane_list H (= X) EDITPLANE_X g_yplane_list H (= X)
*/
if (w->plane != EDITPLANE_X)
{
hleft = ptr->hstart;
hright = ptr->hend;
}
else
{
hleft = ptr->vstart;
hright = ptr->vend;
}
/* Get the left side offset and verify that some part of the rectangle lies
* to the left of the right side of the display.
*/
hleft -= hoffset;
if (hleft >= g_view_size)
{
return;
}
if (hleft < 0)
{
hleft = 0;
}
/* Get the right side offset and verify that some part of the rectangle lies
* to the right of the left side of the display.
*/
hright -= hoffset;
if (hright < 0)
{
return;
}
if (hright >= g_view_size)
{
hright = g_view_size - 1;
}
/* We now have some line segment that we know is to fully on the display.
* Get the display positions of the line segment.
*/
hleft = hleft * w->width / g_view_size;
hright = hright * w->width / g_view_size;
vtop = vtop * w->height / g_view_size;
/* Apply Line thickness to get a narrow rectangle */
vbottom = vtop + LINE_THICKNESS_DELTA;
if (vbottom >= w->height)
{
vbottom = w->height - 1;
}
vtop -= LINE_THICKNESS_DELTA;
if (vtop < 0)
{
vtop = 0;
}
/* Paint it */
tcl_paint_rectangle(w, hleft, hright, vtop, vbottom, pixel);
}
/****************************************************************************
* Function: tcl_check_vertical_rectangle
* Description:
***************************************************************************/
static int tcl_check_vertical_rectangle(tcl_window_t *w, rect_data_t *ptr, int pos)
{
int posstart;
int posend;
/* Search the plane list for every place whose "level" component includes the
* current map level. This will be the horizontal component of the rectangle
* in every case except for EDITPLANE_Z
*
* x->plane hhead level component EDITPLANE_X g_yplane_list H (= X) EDITPLANE_Y
* g_xplane_list H (= Y) EDITPLANE_Z g_xplane_list V (= Z)
*/
if (w->plane != EDITPLANE_Z)
{
posstart = ptr->hstart;
posend = ptr->hend;
}
else
{
posstart = ptr->vstart;
posend = ptr->vend;
}
/* Verify the vertical rectangle intersects the viewing plane */
return ((posstart <= pos) && (posend >= pos));
}
/****************************************************************************
* Function: tcl_paint_vertical_rectangle
* Description:
***************************************************************************/
static void tcl_paint_vertical_rectangle(tcl_window_t *w, rect_data_t *ptr,
int hoffset, int voffset, dev_pixel_t pixel)
{
int hleft;
int hright;
int vtop;
int vbottom;
/* Get the "horizontal" position of the vertical line. This will always be
* the plane component of the rectangle:
*
* w->plane hhead horizontal component EDITPLANE_X g_yplane_list plane (= Y)
* EDITPLANE_Y g_xplane_list plane (= X) EDITPLANE_Z g_xplane_list plane (= X)
*/
hleft = ptr->plane - hoffset;
if ((hleft < 0) || (hleft >= g_view_size))
{
return;
}
/* Get the extent of the vertical line. This will be the vertical component
* of the rectangle in every case except when the viewing plane is
* EDITPLANE_Z and will have to be "flipped" if the viewing plane is not
* EDITPLANE_Z:
*
* w->plane hhead horizontal component EDITPLANE_X g_yplane_list V (= Z) EDITPLANE_Y
* g_xplane_list V (= Z) EDITPLANE_Z g_xplane_list H (= Y)
*/
if (w->plane != EDITPLANE_Z)
{
vtop = ptr->vstart;
vbottom = ptr->vend;
}
else
{
vtop = ptr->hstart;
vbottom = ptr->hend;
}
/* Get the top side offset and verify that some part of the rectangle lies
* above the bottom of the display.
*/
vtop -= voffset;
if (vtop >= g_view_size)
{
return;
}
if (vtop < 0)
{
vtop = 0;
}
/* Get the bottom side offset and verify that some part of the rectangle lies
* below the top of the display
*/
vbottom -= voffset;
if (vbottom < 0)
{
return;
}
if (vbottom >= g_view_size)
{
vbottom = g_view_size - 1;
}
/* Flip if necessary */
if (w->plane != EDITPLANE_Z)
{
int vtmp = vbottom;
vbottom = g_view_size - vtop - 1;
vtop = g_view_size - vtmp - 1;
}
/* We now have some line segment that we know is to fully on the display.
* Get the display positions of the line segment
*/
hleft = hleft * w->width / g_view_size;
vtop = vtop * w->height / g_view_size;
vbottom = vbottom * w->height / g_view_size;
/* Apply Line thickness to get a narrow rectangle */
hright = hleft + LINE_THICKNESS_DELTA;
if (hright >= w->width)
{
hright = w->width;
}
hleft -= LINE_THICKNESS_DELTA;
if (hleft < 0)
{
hleft = 0;
}
/* Paint it */
tcl_paint_rectangle(w, hleft, hright, vtop, vbottom, pixel);
}
/*******************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Function: tcl_paint_background
* Description:
***************************************************************************/
void tcl_paint_background(tcl_window_t *w)
{
dev_pixel_t *dest;
dev_pixel_t pixel;
int ndx = tcl_color_index(w);
int i;
info("g_edit_mode=%d g_edit_plane=%d plane=%d ndx=%d\n",
g_edit_mode, g_edit_plane, w->plane, ndx);
pixel = w->colorLookup[ndx + BKGD_COLOR];
dest = w->frameBuffer;
info("ndx=%d dest=%p pixel=0x%06lx\n", ndx, dest, (unsigned long)pixel);
for (i = 0; i < w->width * w->height; i++)
{
*dest++ = pixel;
}
}
/****************************************************************************
* Function: tcl_paint_position
* Description:
***************************************************************************/
void tcl_paint_position(tcl_window_t *w)
{
/* Only show the position cursor in POS mode */
if (g_edit_mode == EDITMODE_POS)
{
dev_pixel_t *dest;
dev_pixel_t pixel;
int ndx = tcl_color_index(w);
int hpos;
int vpos;
int i;
info("plane=%d ndx=%d\n", w->plane, ndx);
/* Horizontal and vertical positions will depend on which plane is
* selected.
*/
switch (w->plane)
{
default:
case EDITPLANE_X:
hpos = g_plane_position[EDITPLANE_Y] - g_coord_offset[EDITPLANE_Y];
vpos = g_plane_position[EDITPLANE_Z] - g_coord_offset[EDITPLANE_Z];
vpos = g_view_size - vpos - 1;
break;
case EDITPLANE_Y:
hpos = g_plane_position[EDITPLANE_X] - g_coord_offset[EDITPLANE_X];
vpos = g_plane_position[EDITPLANE_Z] - g_coord_offset[EDITPLANE_Z];
vpos = g_view_size - vpos - 1;
break;
case EDITPLANE_Z:
hpos = g_plane_position[EDITPLANE_X] - g_coord_offset[EDITPLANE_X];
vpos = g_plane_position[EDITPLANE_Y] - g_coord_offset[EDITPLANE_Y];
break;
}
/* Scale the position to fit in the display */
hpos = (hpos * w->width) / g_view_size;
vpos = (vpos * w->height) / g_view_size;
/* Paint the horizontal line */
pixel = w->colorLookup[ndx + HLINE_COLOR];
dest = w->frameBuffer + vpos * w->width;
info("dest=%p pixel=0x%06lx\n", dest, (unsigned long)pixel);
for (i = 0; i < w->width; i++)
{
*dest++ = pixel;
}
/* Paint the vertical line */
pixel = w->colorLookup[ndx + HLINE_COLOR];
dest = w->frameBuffer + hpos;
info("dest=%p pixel=0x%06lx\n", dest, (unsigned long)pixel);
for (i = 0; i < w->height; i++)
{
*dest = pixel;
dest += w->width;
}
}
}
/****************************************************************************
* Function: tcl_paint_grid
* Description:
***************************************************************************/
void tcl_paint_grid(tcl_window_t *w)
{
dev_pixel_t *dest;
dev_pixel_t pixel;
int ndx = tcl_color_index(w);
int hoffset, hpos, haccum;
int voffset, vpos, vaccum;
int gridmask;
int i;
info("plane=%d ndx=%d\n", w->plane, ndx);
/* Horizontal and vertical positions will depend on which plane is selected. */
switch (w->plane)
{
default:
case EDITPLANE_X:
hoffset = g_coord_offset[EDITPLANE_Y];
voffset = g_view_size - g_coord_offset[EDITPLANE_Z] - 1;
break;
case EDITPLANE_Y:
hoffset = g_coord_offset[EDITPLANE_X];
voffset = g_view_size - g_coord_offset[EDITPLANE_Z] - 1;
break;
case EDITPLANE_Z:
hoffset = g_coord_offset[EDITPLANE_X];
voffset = g_coord_offset[EDITPLANE_Y];
break;
}
/* This is the color of the grid */
pixel = w->colorLookup[ndx + GRID_COLOR];
/* Paint the horizontal grid lines */
gridmask = g_grid_step - 1;
vaccum = ((voffset + gridmask) & ~gridmask) - voffset;
vpos = (vaccum * w->height) / g_view_size;
do
{
/* Paint one horizontal grid line */
dest = w->frameBuffer + vpos * w->width;
for (i = 0; i < w->width; i++)
{
*dest++ = pixel;
}
/* Scale the next grid position onto the display */
vaccum += g_grid_step;
vpos = (vaccum * w->height) / g_view_size;
}
while (vpos < w->height);
/* Paint the vertical grid lines */
/* Force the starting offsets to lie on a grid line */
haccum = ((hoffset + gridmask) & ~gridmask) - hoffset;
hpos = (haccum * w->width) / g_view_size;
do
{
/* Paint one vertical grid line */
dest = w->frameBuffer + hpos;
for (i = 0; i < w->height; i++)
{
*dest = pixel;
dest += w->width;
}
/* Scale the next grid position onto the display */
haccum += g_grid_step;
hpos = (haccum * w->width) / g_view_size;
}
while (hpos < w->width);
}
/****************************************************************************
* Function: tcl_paint_rectangles
* Description:
***************************************************************************/
void tcl_paint_rectangles(tcl_window_t *w)
{
rect_list_t *head, *vhead, *hhead;
rect_list_t *list;
rect_data_t *ptr;
dev_pixel_t pixel;
int ndx = tcl_color_index(w);
int hoffset, voffset;
int hplane, vplane;
int pos;
/* Select the plane lists and plane position for the current window */
switch (w->plane)
{
default:
case EDITPLANE_X:
pos = g_plane_position[EDITPLANE_X];
hplane = EDITPLANE_Y;
vplane = EDITPLANE_Z;
head = g_xplane_list.head;
hhead = g_yplane_list.head;
vhead = g_zplane_list.head;
break;
case EDITPLANE_Y:
pos = g_plane_position[EDITPLANE_Y];
hplane = EDITPLANE_X;
vplane = EDITPLANE_Z;
head = g_yplane_list.head;
hhead = g_xplane_list.head;
vhead = g_zplane_list.head;
break;
case EDITPLANE_Z:
pos = g_plane_position[EDITPLANE_Z];
hplane = EDITPLANE_X;
vplane = EDITPLANE_Y;
head = g_zplane_list.head;
hhead = g_xplane_list.head;
vhead = g_yplane_list.head;
break;
}
hoffset = g_coord_offset[hplane];
voffset = g_coord_offset[vplane];
/* Display the rectangles which are in the viewing plane */
pixel = w->colorLookup[ndx + NRECT_COLOR];
for (list = head; (list); list = list->flink)
{
ptr = &list->d;
/* We only want the rectangles which lie on the current display level */
if (ptr->plane == pos)
{
tcl_paint_coplanar_rectangle(w, ptr, hoffset, voffset, pixel);
}
}
/* Are we currently editting a new plane that is not yet in the list? It it
* is the same as the display plane, then we will want to display that as
* well.
*/
if ((g_edit_mode == EDITMODE_NEW) &&
(g_edit_plane == w->plane) && (g_edit_rect.plane == pos))
{
pixel = w->colorLookup[ndx + SRECT_COLOR];
tcl_paint_coplanar_rectangle(w, &g_edit_rect, hoffset, voffset, pixel);
}
/* Display the rectangles which are orthogonal and "horizontal" with respect
* to the viewing plane.
*
* Process every plane in the vertical axis (these will be horizontal) This
* will by the Z plane for every viewing plane except EDITPLANE_Z where it
* will be the Y plane */
pixel = w->colorLookup[ndx + BRECT_COLOR];
for (list = vhead; (list); list = list->flink)
{
ptr = &list->d;
/* Search the plane list for every place whose "level" component includes
* the current map level.
*/
if (tcl_check_horizontal_rectangle(w, ptr, pos))
{
tcl_paint_horizontal_rectangle(w, ptr, hoffset, voffset, pixel);
}
}
/* Are we currently editting a new plane that is not yet in the list? */
if ((g_edit_mode == EDITMODE_NEW) && (g_edit_plane == vplane))
{
ptr = &g_edit_rect;
if (tcl_check_horizontal_rectangle(w, ptr, pos))
{
pixel = w->colorLookup[ndx + SRECT_COLOR];
tcl_paint_horizontal_rectangle(w, ptr, hoffset, voffset, pixel);
}
}
/* Display the rectangles which are orthogonal and "vertical" with respect to
* the viewing plane.
*
* Process every plane in the horizontal axis (these will be vertical) This
* will by the X plane for every viewing plane except EDITPLANE_X where it
* will be the Y plane.
*/
pixel = w->colorLookup[ndx + BRECT_COLOR];
for (list = hhead; (list); list = list->flink)
{
ptr = &list->d;
/* Search the plane list for every place whose "level" component includes
* the current map level.
*/
if (tcl_check_vertical_rectangle(w, ptr, pos))
{
tcl_paint_vertical_rectangle(w, &list->d, hoffset, voffset, pixel);
}
}
/* Are we currently editting a new plane that is not yet in the list? */
if ((g_edit_mode == EDITMODE_NEW) && (g_edit_plane == hplane))
{
ptr = &g_edit_rect;
if (tcl_check_vertical_rectangle(w, ptr, pos))
{
pixel = w->colorLookup[ndx + SRECT_COLOR];
tcl_paint_vertical_rectangle(w, ptr, hoffset, voffset, pixel);
}
}
}
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