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#define __BOX3D_SIDE_C__
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* 3D box face implementation
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* Maximilian Albert <Anhalter42@gmx.de>
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* Copyright (C) 2007 Authors
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* Released under GNU GPL, read the file 'COPYING' for more information
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#include "box3d-side.h"
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#include "xml/document.h"
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#include "display/curve.h"
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#include "attributes.h"
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#include "box3d-context.h"
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#include "preferences.h"
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#include "desktop-style.h"
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static void box3d_side_class_init (Box3DSideClass *klass);
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static void box3d_side_init (Box3DSide *side);
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static void box3d_side_build (SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
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static Inkscape::XML::Node *box3d_side_write (SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
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static void box3d_side_set (SPObject *object, unsigned int key, const gchar *value);
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static void box3d_side_update (SPObject *object, SPCtx *ctx, guint flags);
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static void box3d_side_set_shape (SPShape *shape);
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static void box3d_side_compute_corner_ids(Box3DSide *side, unsigned int corners[4]);
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static SPShapeClass *parent_class;
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box3d_side_get_type (void)
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static GType type = 0;
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sizeof (Box3DSideClass),
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(GClassInitFunc) box3d_side_class_init,
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(GInstanceInitFunc) box3d_side_init,
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NULL, /* value_table */
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type = g_type_register_static (SP_TYPE_SHAPE, "Box3DSide", &info, (GTypeFlags)0);
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box3d_side_class_init (Box3DSideClass *klass)
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GObjectClass * gobject_class;
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SPObjectClass * sp_object_class;
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SPItemClass * item_class;
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SPPathClass * path_class;
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SPShapeClass * shape_class;
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gobject_class = (GObjectClass *) klass;
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sp_object_class = (SPObjectClass *) klass;
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item_class = (SPItemClass *) klass;
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path_class = (SPPathClass *) klass;
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shape_class = (SPShapeClass *) klass;
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parent_class = (SPShapeClass *)g_type_class_ref (SP_TYPE_SHAPE);
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sp_object_class->build = box3d_side_build;
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sp_object_class->write = box3d_side_write;
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sp_object_class->set = box3d_side_set;
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sp_object_class->update = box3d_side_update;
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shape_class->set_shape = box3d_side_set_shape;
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box3d_side_init (Box3DSide * side)
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side->dir1 = Box3D::NONE;
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side->dir2 = Box3D::NONE;
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side->front_or_rear = Box3D::FRONT;
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box3d_side_build (SPObject * object, SPDocument * document, Inkscape::XML::Node * repr)
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if (((SPObjectClass *) parent_class)->build)
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((SPObjectClass *) parent_class)->build (object, document, repr);
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sp_object_read_attr(object, "inkscape:box3dsidetype");
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static Inkscape::XML::Node *
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box3d_side_write (SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
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Box3DSide *side = SP_BOX3D_SIDE (object);
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if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
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// this is where we end up when saving as plain SVG (also in other circumstances?)
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// thus we don' set "sodipodi:type" so that the box is only saved as an ordinary svg:path
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repr = xml_doc->createElement("svg:path");
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if (flags & SP_OBJECT_WRITE_EXT) {
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sp_repr_set_int(repr, "inkscape:box3dsidetype", side->dir1 ^ side->dir2 ^ side->front_or_rear);
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sp_shape_set_shape ((SPShape *) object);
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/* Duplicate the path */
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SPCurve const *curve = ((SPShape *) object)->curve;
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//Nulls might be possible if this called iteratively
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char *d = sp_svg_write_path ( curve->get_pathvector() );
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repr->setAttribute("d", d);
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if (((SPObjectClass *) (parent_class))->write)
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((SPObjectClass *) (parent_class))->write (object, xml_doc, repr, flags);
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box3d_side_set (SPObject *object, unsigned int key, const gchar *value)
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Box3DSide *side = SP_BOX3D_SIDE (object);
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// TODO: In case the box was recreated (by undo, e.g.) we need to recreate the path
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// (along with other info?) from the parent box.
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/* fixme: we should really collect updates */
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case SP_ATTR_INKSCAPE_BOX3D_SIDE_TYPE:
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guint desc = atoi (value);
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if (!Box3D::is_face_id(desc)) {
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g_print ("desc is not a face id: =%s=\n", value);
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g_return_if_fail (Box3D::is_face_id (desc));
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Box3D::Axis plane = (Box3D::Axis) (desc & 0x7);
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plane = (Box3D::is_plane(plane) ? plane : Box3D::orth_plane_or_axis(plane));
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side->dir1 = Box3D::extract_first_axis_direction(plane);
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side->dir2 = Box3D::extract_second_axis_direction(plane);
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side->front_or_rear = (Box3D::FrontOrRear) (desc & 0x8);
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object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
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if (((SPObjectClass *) parent_class)->set)
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((SPObjectClass *) parent_class)->set (object, key, value);
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box3d_side_update (SPObject *object, SPCtx *ctx, guint flags)
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if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
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flags &= ~SP_OBJECT_USER_MODIFIED_FLAG_B; // since we change the description, it's not a "just translation" anymore
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if (flags & (SP_OBJECT_MODIFIED_FLAG |
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SP_OBJECT_STYLE_MODIFIED_FLAG |
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SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
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sp_shape_set_shape ((SPShape *) object);
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if (((SPObjectClass *) parent_class)->update)
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((SPObjectClass *) parent_class)->update (object, ctx, flags);
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box3d_side_position_set (Box3DSide *side) {
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box3d_side_set_shape (SP_SHAPE (side));
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/* This call is responsible for live update of the sides during the initial drag */
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SP_OBJECT(side)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
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box3d_side_set_shape (SPShape *shape)
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Box3DSide *side = SP_BOX3D_SIDE (shape);
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if (!SP_OBJECT_DOCUMENT(side)->root) {
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// avoid a warning caused by sp_document_height() (which is called from sp_item_i2d_affine() below)
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// when reading a file containing 3D boxes
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SPObject *parent = SP_OBJECT(side)->parent;
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if (!SP_IS_BOX3D(parent)) {
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g_warning ("Parent of 3D box side is not a 3D box.\n");
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SPBox3D *box = SP_BOX3D(parent);
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Persp3D *persp = box3d_side_perspective(side);
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// TODO: Draw the correct quadrangle here
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// To do this, determine the perspective of the box, the orientation of the side (e.g., XY-FRONT)
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// compute the coordinates of the corners in P^3, project them onto the canvas, and draw the
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unsigned int corners[4];
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box3d_side_compute_corner_ids(side, corners);
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SPCurve *c = new SPCurve();
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c->moveto(box3d_get_corner_screen(box, corners[0]));
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c->lineto(box3d_get_corner_screen(box, corners[1]));
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c->lineto(box3d_get_corner_screen(box, corners[2]));
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c->lineto(box3d_get_corner_screen(box, corners[3]));
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/* Reset the shape'scurve to the "original_curve"
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* This is very important for LPEs to work properly! (the bbox might be recalculated depending on the curve in shape)*/
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sp_shape_set_curve_insync (shape, c, TRUE);
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if (sp_lpe_item_has_path_effect(SP_LPE_ITEM(shape)) && sp_lpe_item_path_effects_enabled(SP_LPE_ITEM(shape))) {
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SPCurve *c_lpe = c->copy();
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bool success = sp_lpe_item_perform_path_effect(SP_LPE_ITEM (shape), c_lpe);
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sp_shape_set_curve_insync (shape, c_lpe, TRUE);
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box3d_side_apply_style (Box3DSide *side) {
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Inkscape::XML::Node *repr_face = SP_OBJECT_REPR(SP_OBJECT(side));
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Inkscape::Preferences *prefs = Inkscape::Preferences::get();
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Glib::ustring descr = "/desktop/";
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descr += box3d_side_axes_string(side);
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Glib::ustring cur_style = prefs->getString(descr);
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SPDesktop *desktop = inkscape_active_desktop();
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bool use_current = prefs->getBool("/tools/shapes/3dbox/usecurrent", false);
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if (use_current && !cur_style.empty()) {
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/* use last used style */
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repr_face->setAttribute("style", cur_style.data());
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/* use default style */
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GString *pstring = g_string_new("");
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g_string_printf (pstring, "/tools/shapes/3dbox/%s", box3d_side_axes_string(side));
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sp_desktop_apply_style_tool (desktop, repr_face, pstring->str, false);
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box3d_side_axes_string(Box3DSide *side)
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GString *pstring = g_string_new("");
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g_string_printf (pstring, "%s", Box3D::string_from_axes ((Box3D::Axis) (side->dir1 ^ side->dir2)));
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switch ((Box3D::Axis) (side->dir1 ^ side->dir2)) {
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g_string_append_printf (pstring, (side->front_or_rear == Box3D::FRONT) ? "front" : "rear");
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g_string_append_printf (pstring, (side->front_or_rear == Box3D::FRONT) ? "top" : "bottom");
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g_string_append_printf (pstring, (side->front_or_rear == Box3D::FRONT) ? "right" : "left");
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box3d_side_compute_corner_ids(Box3DSide *side, unsigned int corners[4]) {
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Box3D::Axis orth = Box3D::third_axis_direction (side->dir1, side->dir2);
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corners[0] = (side->front_or_rear ? orth : 0);
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corners[1] = corners[0] ^ side->dir1;
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corners[2] = corners[0] ^ side->dir1 ^ side->dir2;
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corners[3] = corners[0] ^ side->dir2;
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box3d_side_perspective(Box3DSide *side) {
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return SP_BOX3D(SP_OBJECT(side)->parent)->persp_ref->getObject();
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Inkscape::XML::Node *
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box3d_side_convert_to_path(Box3DSide *side) {
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// TODO: Copy over all important attributes (see sp_selected_item_to_curved_repr() for an example)
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SPDocument *doc = SP_OBJECT_DOCUMENT(side);
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Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
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Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
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repr->setAttribute("d", SP_OBJECT_REPR(side)->attribute("d"));
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repr->setAttribute("style", SP_OBJECT_REPR(side)->attribute("style"));
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c-file-style:"stroustrup"
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c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
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// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :