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/*
* Smithsonian Astrophysical Observatory, Cambridge, MA, USA
* This code has been modified under the terms listed below and is made
* available under the same terms.
*/
/*
* Copyright 1993-2004 George A Howlett.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "bltGrMarkerPolygon.h"
#include "bltGrMarkerOption.h"
using namespace Blt;
static Tk_OptionSpec optionSpecs[] = {
{TK_OPTION_CUSTOM, "-bindtags", "bindTags", "BindTags",
"Polygon all", -1, Tk_Offset(PolygonMarkerOptions, tags),
TK_OPTION_NULL_OK, &listObjOption, 0},
{TK_OPTION_CUSTOM, "-cap", "cap", "Cap",
"butt", -1, Tk_Offset(PolygonMarkerOptions, capStyle),
0, &capStyleObjOption, 0},
{TK_OPTION_CUSTOM, "-coords", "coords", "Coords",
NULL, -1, Tk_Offset(PolygonMarkerOptions, worldPts),
TK_OPTION_NULL_OK, &coordsObjOption, 0},
{TK_OPTION_CUSTOM, "-dashes", "dashes", "Dashes",
NULL, -1, Tk_Offset(PolygonMarkerOptions, dashes),
TK_OPTION_NULL_OK, &dashesObjOption, 0},
{TK_OPTION_STRING, "-element", "element", "Element",
NULL, -1, Tk_Offset(PolygonMarkerOptions, elemName),
TK_OPTION_NULL_OK, NULL, 0},
{TK_OPTION_COLOR, "-fill", "fill", "Fill",
NULL, -1, Tk_Offset(PolygonMarkerOptions, fill),
TK_OPTION_NULL_OK, NULL, 0},
{TK_OPTION_COLOR, "-fillbg", "fillbg", "FillBg",
NULL, -1, Tk_Offset(PolygonMarkerOptions, fillBg),
TK_OPTION_NULL_OK, NULL, 0},
{TK_OPTION_CUSTOM, "-join", "join", "Join",
"miter", -1, Tk_Offset(PolygonMarkerOptions, joinStyle),
0, &joinStyleObjOption, 0},
{TK_OPTION_PIXELS, "-linewidth", "lineWidth", "LineWidth",
"1", -1, Tk_Offset(PolygonMarkerOptions, lineWidth), 0, NULL, 0},
{TK_OPTION_BOOLEAN, "-hide", "hide", "Hide",
"no", -1, Tk_Offset(PolygonMarkerOptions, hide), 0, NULL, 0},
{TK_OPTION_CUSTOM, "-mapx", "mapX", "MapX",
"x", -1, Tk_Offset(PolygonMarkerOptions, axes.x), 0, &xAxisObjOption, 0},
{TK_OPTION_CUSTOM, "-mapy", "mapY", "MapY",
"y", -1, Tk_Offset(PolygonMarkerOptions, axes.y), 0, &yAxisObjOption, 0},
{TK_OPTION_COLOR, "-outline", "outline", "Outline",
STD_NORMAL_FOREGROUND, -1, Tk_Offset(PolygonMarkerOptions, outline),
TK_OPTION_NULL_OK, NULL, 0},
{TK_OPTION_COLOR, "-outlinebg", "outlinebg", "OutlineBg",
NULL, -1, Tk_Offset(PolygonMarkerOptions, outlineBg),
TK_OPTION_NULL_OK, NULL, 0},
{TK_OPTION_STRING_TABLE, "-state", "state", "State",
"normal", -1, Tk_Offset(PolygonMarkerOptions, state),
0, &stateObjOption, 0},
{TK_OPTION_BITMAP, "-stipple", "stipple", "Stipple",
NULL, -1, Tk_Offset(PolygonMarkerOptions, stipple),
TK_OPTION_NULL_OK, NULL, 0},
{TK_OPTION_BOOLEAN, "-under", "under", "Under",
"no", -1, Tk_Offset(PolygonMarkerOptions, drawUnder), 0, NULL, 0},
{TK_OPTION_PIXELS, "-xoffset", "xOffset", "XOffset",
"0", -1, Tk_Offset(PolygonMarkerOptions, xOffset), 0, NULL, 0},
{TK_OPTION_BOOLEAN, "-xor", "xor", "Xor",
"no", -1, Tk_Offset(PolygonMarkerOptions, xorr), 0, NULL, 0},
{TK_OPTION_PIXELS, "-yoffset", "yOffset", "YOffset",
"0", -1, Tk_Offset(PolygonMarkerOptions, yOffset), 0, NULL, 0},
{TK_OPTION_END, NULL, NULL, NULL, NULL, -1, 0, 0, NULL, 0}
};
PolygonMarker::PolygonMarker(Graph* graphPtr, const char* name,
Tcl_HashEntry* hPtr)
: Marker(graphPtr, name, hPtr)
{
ops_ = (PolygonMarkerOptions*)calloc(1, sizeof(PolygonMarkerOptions));
optionTable_ = Tk_CreateOptionTable(graphPtr->interp, optionSpecs);
screenPts_ =NULL;
outlineGC_ =NULL;
fillGC_ =NULL;
fillPts_ =NULL;
nFillPts_ =0;
outlinePts_ =NULL;
nOutlinePts_ =0;
}
PolygonMarker::~PolygonMarker()
{
if (fillGC_)
Tk_FreeGC(graphPtr_->display, fillGC_);
if (outlineGC_)
Blt_FreePrivateGC(graphPtr_->display, outlineGC_);
if (fillPts_)
delete [] fillPts_;
if (outlinePts_)
delete [] outlinePts_;
if (screenPts_)
delete [] screenPts_;
}
int PolygonMarker::configure()
{
PolygonMarkerOptions* ops = (PolygonMarkerOptions*)ops_;
Drawable drawable = Tk_WindowId(graphPtr_->tkwin);
unsigned long gcMask = (GCLineWidth | GCLineStyle);
XGCValues gcValues;
if (ops->outline) {
gcMask |= GCForeground;
gcValues.foreground = ops->outline->pixel;
}
if (ops->outlineBg) {
gcMask |= GCBackground;
gcValues.background = ops->outlineBg->pixel;
}
gcMask |= (GCCapStyle | GCJoinStyle);
gcValues.cap_style = ops->capStyle;
gcValues.join_style = ops->joinStyle;
gcValues.line_style = LineSolid;
gcValues.dash_offset = 0;
gcValues.line_width = LineWidth(ops->lineWidth);
if (LineIsDashed(ops->dashes)) {
gcValues.line_style = (ops->outlineBg == NULL)
? LineOnOffDash : LineDoubleDash;
}
if (ops->xorr) {
unsigned long pixel;
gcValues.function = GXxor;
gcMask |= GCFunction;
pixel = Tk_3DBorderColor(graphPtr_->plotBg)->pixel;
if (gcMask & GCBackground)
gcValues.background ^= pixel;
gcValues.foreground ^= pixel;
if (drawable != None)
draw(drawable);
}
// outlineGC
GC newGC = Blt_GetPrivateGC(graphPtr_->tkwin, gcMask, &gcValues);
if (LineIsDashed(ops->dashes))
Blt_SetDashes(graphPtr_->display, newGC, &ops->dashes);
if (outlineGC_)
Blt_FreePrivateGC(graphPtr_->display, outlineGC_);
outlineGC_ = newGC;
// fillGC
gcMask = 0;
if (ops->fill) {
gcMask |= GCForeground;
gcValues.foreground = ops->fill->pixel;
}
if (ops->fillBg) {
gcMask |= GCBackground;
gcValues.background = ops->fillBg->pixel;
}
if (ops->stipple != None) {
gcValues.stipple = ops->stipple;
gcValues.fill_style = (ops->fillBg)
? FillOpaqueStippled : FillStippled;
gcMask |= (GCStipple | GCFillStyle);
}
newGC = Tk_GetGC(graphPtr_->tkwin, gcMask, &gcValues);
if (fillGC_)
Tk_FreeGC(graphPtr_->display, fillGC_);
fillGC_ = newGC;
if ((gcMask == 0) && !(graphPtr_->flags & RESET_AXES) && ops->xorr) {
if (drawable != None) {
map();
draw(drawable);
}
return TCL_OK;
}
return TCL_OK;
}
void PolygonMarker::draw(Drawable drawable)
{
PolygonMarkerOptions* ops = (PolygonMarkerOptions*)ops_;
// fill region
if ((nFillPts_ > 0) && (ops->fill)) {
XPoint* points = new XPoint[nFillPts_];
if (!points)
return;
XPoint* dp = points;
Point2d *sp, *send;
for (sp = fillPts_, send = sp + nFillPts_; sp < send; sp++) {
dp->x = (short int)sp->x;
dp->y = (short int)sp->y;
dp++;
}
XFillPolygon(graphPtr_->display, drawable, fillGC_, points,
nFillPts_, Complex, CoordModeOrigin);
delete [] points;
}
// outline
if ((nOutlinePts_ > 0) && (ops->lineWidth > 0) &&
(ops->outline)) {
Blt_Draw2DSegments(graphPtr_->display, drawable, outlineGC_,
outlinePts_, nOutlinePts_);
}
}
void PolygonMarker::map()
{
PolygonMarkerOptions* ops = (PolygonMarkerOptions*)ops_;
if (outlinePts_) {
delete [] outlinePts_;
outlinePts_ = NULL;
nOutlinePts_ = 0;
}
if (fillPts_) {
delete [] fillPts_;
fillPts_ = NULL;
nFillPts_ = 0;
}
if (screenPts_) {
delete [] screenPts_;
screenPts_ = NULL;
}
if (!ops->worldPts || ops->worldPts->num < 3)
return;
// Allocate and fill a temporary array to hold the screen coordinates of
// the polygon.
int nScreenPts = ops->worldPts->num + 1;
Point2d* screenPts = new Point2d[nScreenPts + 1];
{
Point2d* dp = screenPts;
Point2d *sp, *send;
for (sp = ops->worldPts->points, send = sp + ops->worldPts->num;
sp < send; sp++) {
*dp = mapPoint(sp, &ops->axes);
dp->x += ops->xOffset;
dp->y += ops->yOffset;
dp++;
}
*dp = screenPts[0];
}
Region2d extents;
Blt_GraphExtents(graphPtr_, &extents);
clipped_ = 1;
if (ops->fill) {
Point2d* lfillPts = new Point2d[nScreenPts * 3];
int n =
Blt_PolyRectClip(&extents, screenPts, ops->worldPts->num,lfillPts);
if (n < 3)
delete [] lfillPts;
else {
nFillPts_ = n;
fillPts_ = lfillPts;
clipped_ = 0;
}
}
if ((ops->outline) && (ops->lineWidth > 0)) {
// Generate line segments representing the polygon outline. The
// resulting outline may or may not be closed from viewport clipping.
Segment2d* outlinePts = new Segment2d[nScreenPts];
if (!outlinePts)
return;
// Note that this assumes that the point array contains an extra point
// that closes the polygon.
Segment2d* segPtr = outlinePts;
Point2d *sp, *send;
for (sp = screenPts, send = sp + (nScreenPts - 1); sp < send; sp++) {
segPtr->p = sp[0];
segPtr->q = sp[1];
if (Blt_LineRectClip(&extents, &segPtr->p, &segPtr->q)) {
segPtr++;
}
}
nOutlinePts_ = segPtr - outlinePts;
outlinePts_ = outlinePts;
if (nOutlinePts_ > 0)
clipped_ = 0;
}
screenPts_ = screenPts;
}
int PolygonMarker::pointIn(Point2d *samplePtr)
{
PolygonMarkerOptions* ops = (PolygonMarkerOptions*)ops_;
if (ops->worldPts && (ops->worldPts->num >= 3) && screenPts_)
return Blt_PointInPolygon(samplePtr, screenPts_, ops->worldPts->num + 1);
return 0;
}
int PolygonMarker::regionIn(Region2d *extsPtr, int enclosed)
{
PolygonMarkerOptions* ops = (PolygonMarkerOptions*)ops_;
if (ops->worldPts && (ops->worldPts->num >= 3) && screenPts_)
return regionInPolygon(extsPtr, screenPts_, ops->worldPts->num, enclosed);
return 0;
}
void PolygonMarker::postscript(Blt_Ps ps)
{
PolygonMarkerOptions* ops = (PolygonMarkerOptions*)ops_;
if (ops->fill) {
Blt_Ps_Polyline(ps, fillPts_, nFillPts_);
if (ops->fillBg) {
Blt_Ps_XSetBackground(ps, ops->fillBg);
Blt_Ps_Append(ps, "gsave fill grestore\n");
}
Blt_Ps_XSetForeground(ps, ops->fill);
if (ops->stipple != None) {
Blt_Ps_XSetStipple(ps, graphPtr_->display, ops->stipple);
} else {
Blt_Ps_Append(ps, "fill\n");
}
}
if ((ops->lineWidth > 0) && (ops->outline)) {
Blt_Ps_XSetLineAttributes(ps, ops->outline, ops->lineWidth, &ops->dashes,
ops->capStyle, ops->joinStyle);
if ((ops->outlineBg) && (LineIsDashed(ops->dashes))) {
Blt_Ps_Append(ps, "/DashesProc {\ngsave\n ");
Blt_Ps_XSetBackground(ps, ops->outlineBg);
Blt_Ps_Append(ps, " ");
Blt_Ps_XSetDashes(ps, (Blt_Dashes *)NULL);
Blt_Ps_Append(ps, "stroke\n grestore\n} def\n");
} else {
Blt_Ps_Append(ps, "/DashesProc {} def\n");
}
Blt_Ps_Draw2DSegments(ps, outlinePts_, nOutlinePts_);
}
}
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