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index bfbb0e4d40abd5698987427784913c67a5287a8f..01b8e64b5b3c91732fc4027c83c2fb853b20bbd7 100644 (file)
#include <sp-path.h>
#include <style.h>
#include <display/curve.h>
-#include <libnr/n-art-bpath.h>
#include <extension/system.h>
-
+#include <2geom/pathvector.h>
+#include <2geom/rect.h>
+#include <2geom/bezier-curve.h>
+#include <2geom/hvlinesegment.h>
+#include "helper/geom.h"
#include <io/sys.h>
#include <string>
/**
* Output the file header
*/
-void PovOutput::doHeader()
+bool PovOutput::doHeader()
{
time_t tim = time(NULL);
out("/*###################################################################\n");
out("## Nodes : %d\n", nrNodes);
out("###################################################################*/\n");
out("\n\n\n");
+ return true;
}
/**
* Output the file footer
*/
-void PovOutput::doTail()
+bool PovOutput::doTail()
{
out("\n\n");
out("/*###################################################################\n");
out("### E N D F I L E\n");
out("###################################################################*/\n");
out("\n\n");
+ return true;
}
/**
* Output the curve data to buffer
*/
-void PovOutput::doCurves(SPDocument *doc)
+bool PovOutput::doCurve(SPItem *item, const String &id)
{
- std::vector<Inkscape::XML::Node *>results;
- //findElementsByTagName(results, SP_ACTIVE_DOCUMENT->rroot, "path");
- findElementsByTagName(results, SP_ACTIVE_DOCUMENT->rroot, NULL);
- if (results.size() == 0)
- return;
+ using Geom::X;
+ using Geom::Y;
- double bignum = 1000000.0;
- double minx = bignum;
- double maxx = -bignum;
- double miny = bignum;
- double maxy = -bignum;
+ //### Get the Shape
+ if (!SP_IS_SHAPE(item))//Bulia's suggestion. Allow all shapes
+ return true;
- for (unsigned int indx = 0; indx < results.size() ; indx++)
- {
- //### Fetch the object from the repr info
- Inkscape::XML::Node *rpath = results[indx];
- char *str = (char *) rpath->attribute("id");
- if (!str)
- continue;
+ SPShape *shape = SP_SHAPE(item);
+ SPCurve *curve = shape->curve;
+ if (curve->is_empty())
+ return true;
- String id = str;
- SPObject *reprobj = SP_ACTIVE_DOCUMENT->getObjectByRepr(rpath);
- if (!reprobj)
- continue;
+ nrShapes++;
- //### Get the transform of the item
- if (!SP_IS_ITEM(reprobj))
- continue;
+ PovShapeInfo shapeInfo;
+ shapeInfo.id = id;
+ shapeInfo.color = "";
- SPItem *item = SP_ITEM(reprobj);
- NR::Matrix tf = from_2geom(sp_item_i2d_affine(item));
-
- //### Get the Shape
- if (!SP_IS_SHAPE(reprobj))//Bulia's suggestion. Allow all shapes
- continue;
-
- SPShape *shape = SP_SHAPE(reprobj);
- SPCurve *curve = shape->curve;
- if (curve->is_empty())
- continue;
-
- nrShapes++;
-
- PovShapeInfo shapeInfo;
- shapeInfo.id = id;
- shapeInfo.color = "";
-
- //Try to get the fill color of the shape
- SPStyle *style = SP_OBJECT_STYLE(shape);
- /* fixme: Handle other fill types, even if this means translating gradients to a single
+ //Try to get the fill color of the shape
+ SPStyle *style = SP_OBJECT_STYLE(shape);
+ /* fixme: Handle other fill types, even if this means translating gradients to a single
flat colour. */
- if (style && (style->fill.isColor()))
+ if (style)
+ {
+ if (style->fill.isColor())
{
// see color.h for how to parse SPColor
float rgb[3];
rgbf.append(dstr(1.0 - dopacity)); rgbf.append(">");
shapeInfo.color += rgbf;
}
+ }
- povShapes.push_back(shapeInfo); //passed all tests. save the info
+ povShapes.push_back(shapeInfo); //passed all tests. save the info
- int curveLength = SP_CURVE_LENGTH(curve);
+ // convert the path to only lineto's and cubic curveto's:
+ Geom::Matrix tf = sp_item_i2d_affine(item);
+ Geom::PathVector pathv = pathv_to_linear_and_cubic_beziers( curve->get_pathvector() * tf );
- //Count the NR_CURVETOs/LINETOs
- int segmentCount=0;
- NArtBpath const *bp = curve->get_bpath();
- for (int curveNr=0 ; curveNr<curveLength ; curveNr++, bp++)
- if (bp->code == NR_CURVETO || bp->code == NR_LINETO)
- segmentCount++;
+ //Count the NR_CURVETOs/LINETOs (including closing line segment)
+ int segmentCount = 0;
+ for(Geom::PathVector::const_iterator it = pathv.begin(); it != pathv.end(); ++it)
+ {
+ segmentCount += (*it).size();
+ if (it->closed())
+ segmentCount += 1;
+ }
- double cminx = bignum;
- double cmaxx = -bignum;
- double cminy = bignum;
- double cmaxy = -bignum;
- double lastx = 0.0;
- double lasty = 0.0;
+ out("/*###################################################\n");
+ out("### PRISM: %s\n", id.c_str());
+ out("###################################################*/\n");
+ out("#declare %s = prism {\n", id.c_str());
+ out(" linear_sweep\n");
+ out(" bezier_spline\n");
+ out(" 1.0, //top\n");
+ out(" 0.0, //bottom\n");
+ out(" %d //nr points\n", segmentCount * 4);
+ int segmentNr = 0;
+
+ nrSegments += segmentCount;
+
+ /**
+ * at moment of writing, 2geom lacks proper initialization of empty intervals in rect...
+ */
+ Geom::Rect cminmax( pathv.front().initialPoint(), pathv.front().initialPoint() );
+
+
+ /**
+ * For all Subpaths in the <path>
+ */
+ for (Geom::PathVector::const_iterator pit = pathv.begin(); pit != pathv.end(); ++pit)
+ {
- out("/*###################################################\n");
- out("### PRISM: %s\n", id.c_str());
- out("###################################################*/\n");
- out("#declare %s = prism {\n", id.c_str());
- out(" linear_sweep\n");
- out(" bezier_spline\n");
- out(" 1.0, //top\n");
- out(" 0.0, //bottom\n");
- out(" %d //nr points\n", segmentCount * 4);
- int segmentNr = 0;
- bp = curve->get_bpath();
-
- nrSegments += curveLength;
+ cminmax.expandTo(pit->initialPoint());
- for (int curveNr=0 ; curveNr < curveLength ; curveNr++)
- {
- using NR::X;
- using NR::Y;
- //transform points. note overloaded '*'
- NR::Point const p1(bp->c(1) * tf);
- NR::Point const p2(bp->c(2) * tf);
- NR::Point const p3(bp->c(3) * tf);
- double const x1 = p1[X], y1 = p1[Y];
- double const x2 = p2[X], y2 = p2[Y];
- double const x3 = p3[X], y3 = p3[Y];
-
- switch (bp->code)
+ /**
+ * For all segments in the subpath
+ */
+ for (Geom::Path::const_iterator cit = pit->begin(); cit != pit->end_closed(); ++cit)
+ {
+
+ if( dynamic_cast<Geom::LineSegment const *> (&*cit) ||
+ dynamic_cast<Geom::HLineSegment const *>(&*cit) ||
+ dynamic_cast<Geom::VLineSegment const *>(&*cit) )
{
- case NR_MOVETO:
- case NR_MOVETO_OPEN:
- {
- //fprintf(f, "moveto: %f %f\n", bp->x3, bp->y3);
- break;
- }
- case NR_CURVETO:
- {
- //fprintf(f, " /*%4d*/ <%f, %f>, <%f, %f>, <%f,%f>, <%f,%f>",
- // segmentNr++, lastx, lasty, x1, y1, x2, y2, x3, y3);
- segment(segmentNr++,
- lastx, lasty, x1, y1, x2, y2, x3, y3);
- nrNodes += 8;
-
- if (segmentNr < segmentCount)
- out(",\n");
- else
- out("\n");
-
- if (lastx < cminx)
- cminx = lastx;
- if (lastx > cmaxx)
- cmaxx = lastx;
- if (lasty < cminy)
- cminy = lasty;
- if (lasty > cmaxy)
- cmaxy = lasty;
- break;
- }
- case NR_LINETO:
- {
- //NOTE: we need to carefully handle line->curve and curve->line
- // transitions.
- //fprintf(f, " /*%4d*/ <%f, %f>, <%f, %f>, <%f,%f>, <%f,%f>",
- // segmentNr++, lastx, lasty, lastx, lasty, x3, y3, x3, y3);
- segment(segmentNr++,
- lastx, lasty, lastx, lasty, x3, y3, x3, y3);
- nrNodes += 8;
-
- if (segmentNr < segmentCount)
- out(",\n");
- else
- out("\n");
-
- //fprintf(f, "lineto\n");
- if (lastx < cminx)
- cminx = lastx;
- if (lastx > cmaxx)
- cmaxx = lastx;
- if (lasty < cminy)
- cminy = lasty;
- if (lasty > cmaxy)
- cmaxy = lasty;
- break;
- }
- case NR_END:
- {
- //fprintf(f, "end\n");
- break;
- }
+ Geom::Point p0 = cit->initialPoint();
+ Geom::Point p1 = cit->finalPoint();
+ segment(segmentNr++,
+ p0[X], p0[Y], p0[X], p0[Y], p1[X], p1[Y], p1[X], p1[Y] );
+ nrNodes += 8;
}
- lastx = x3;
- lasty = y3;
- bp++;
+ else if(Geom::CubicBezier const *cubic = dynamic_cast<Geom::CubicBezier const*>(&*cit))
+ {
+ std::vector<Geom::Point> points = cubic->points();
+ Geom::Point p0 = points[0];
+ Geom::Point p1 = points[1];
+ Geom::Point p2 = points[2];
+ Geom::Point p3 = points[3];
+ segment(segmentNr++,
+ p0[X],p0[Y], p1[X],p1[Y], p2[X],p2[Y], p3[X],p3[Y]);
+ nrNodes += 8;
+ }
+ else
+ {
+ g_warning("logical error, because pathv_to_linear_and_cubic_beziers was used");
+ return false;
+ }
+
+ if (segmentNr < segmentCount)
+ out(",\n");
+ else
+ out("\n");
+
+ cminmax.expandTo(cit->finalPoint());
+
}
- out("}\n");
+ }
+ out("}\n");
+
+ double cminx = cminmax.min()[X];
+ double cmaxx = cminmax.max()[X];
+ double cminy = cminmax.min()[Y];
+ double cmaxy = cminmax.max()[Y];
+
+ out("#declare %s_MIN_X = %s;\n", id.c_str(), dstr(cminx).c_str());
+ out("#declare %s_CENTER_X = %s;\n", id.c_str(), dstr((cmaxx+cminx)/2.0).c_str());
+ out("#declare %s_MAX_X = %s;\n", id.c_str(), dstr(cmaxx).c_str());
+ out("#declare %s_WIDTH = %s;\n", id.c_str(), dstr(cmaxx-cminx).c_str());
+ out("#declare %s_MIN_Y = %s;\n", id.c_str(), dstr(cminy).c_str());
+ out("#declare %s_CENTER_Y = %s;\n", id.c_str(), dstr((cmaxy+cminy)/2.0).c_str());
+ out("#declare %s_MAX_Y = %s;\n", id.c_str(), dstr(cmaxy).c_str());
+ out("#declare %s_HEIGHT = %s;\n", id.c_str(), dstr(cmaxy-cminy).c_str());
+ if (shapeInfo.color.length()>0)
+ out("#declare %s_COLOR = %s;\n",
+ id.c_str(), shapeInfo.color.c_str());
+ out("/*###################################################\n");
+ out("### end %s\n", id.c_str());
+ out("###################################################*/\n\n\n\n");
+
+ if (cminx < minx)
+ minx = cminx;
+ if (cmaxx > maxx)
+ maxx = cmaxx;
+ if (cminy < miny)
+ miny = cminy;
+ if (cmaxy > maxy)
+ maxy = cmaxy;
- //# prefix for following declarations
- char *pfx = (char *)id.c_str();
-
- out("#declare %s_MIN_X = %s;\n", pfx, dstr(cminx).c_str());
- out("#declare %s_CENTER_X = %s;\n", pfx, dstr((cmaxx+cminx)/2.0).c_str());
- out("#declare %s_MAX_X = %s;\n", pfx, dstr(cmaxx).c_str());
- out("#declare %s_WIDTH = %s;\n", pfx, dstr(cmaxx-cminx).c_str());
- out("#declare %s_MIN_Y = %s;\n", pfx, dstr(cminy).c_str());
- out("#declare %s_CENTER_Y = %s;\n", pfx, dstr((cmaxy+cminy)/2.0).c_str());
- out("#declare %s_MAX_Y = %s;\n", pfx, dstr(cmaxy).c_str());
- out("#declare %s_HEIGHT = %s;\n", pfx, dstr(cmaxy-cminy).c_str());
- if (shapeInfo.color.length()>0)
- out("#declare %s_COLOR = %s;\n",
- pfx, shapeInfo.color.c_str());
- out("/*###################################################\n");
- out("### end %s\n", id.c_str());
- out("###################################################*/\n\n\n\n");
- if (cminx < minx)
- minx = cminx;
- if (cmaxx > maxx)
- maxx = cmaxx;
- if (cminy < miny)
- miny = cminy;
- if (cmaxy > maxy)
- maxy = cmaxy;
+ return true;
+}
- }//for
+/**
+ * Output the curve data to buffer
+ */
+bool PovOutput::doCurvesRecursive(SPDocument *doc, Inkscape::XML::Node *node)
+{
+ /**
+ * If the object is an Item, try processing it
+ */
+ char *str = (char *) node->attribute("id");
+ SPObject *reprobj = doc->getObjectByRepr(node);
+ if (SP_IS_ITEM(reprobj) && str)
+ {
+ SPItem *item = SP_ITEM(reprobj);
+ String id = str;
+ if (!doCurve(item, id))
+ return false;
+ }
+ /**
+ * Descend into children
+ */
+ for (Inkscape::XML::Node *child = node->firstChild() ; child ;
+ child = child->next())
+ {
+ if (!doCurvesRecursive(doc, child))
+ return false;
+ }
+ return true;
+}
+
+/**
+ * Output the curve data to buffer
+ */
+bool PovOutput::doCurves(SPDocument *doc)
+{
+ double bignum = 1000000.0;
+ minx = bignum;
+ maxx = -bignum;
+ miny = bignum;
+ maxy = -bignum;
+
+ if (!doCurvesRecursive(doc, doc->rroot))
+ return false;
//## Let's make a union of all of the Shapes
if (povShapes.size()>0)
out("\n\n");
}
+ return true;
}
-
-
//########################################################################
//# M A I N O U T P U T
//########################################################################
/**
- * Saves the <paths> of an Inkscape SVG file as PovRay spline definitions
+ * Saves the Shapes of an Inkscape SVG file as PovRay spline definitions
*/
void PovOutput::saveDocument(SPDocument *doc, gchar const *uri)
{
//###### SAVE IN POV FORMAT TO BUFFER
//# Lets do the curves first, to get the stats
- doCurves(doc);
+ if (!doCurves(doc))
+ {
+ g_warning("Could not output curves for %s\n", uri);
+ return;
+ }
+
String curveBuf = outbuf;
outbuf.clear();
- doHeader();
-
+ if (!doHeader())
+ {
+ g_warning("Could not write header for %s\n", uri);
+ return;
+ }
+
outbuf.append(curveBuf);
-
- doTail();
+
+ if (!doTail())
+ {
+ g_warning("Could not write footer for %s\n", uri);
+ return;
+ }
int ch = *iter;
fputc(ch, f);
}
-
+
fclose(f);
}