#define __SP_3DBOX_C__ /* * SVG implementation * * Authors: * Lauris Kaplinski * bulia byak * Maximilian Albert * * Copyright (C) 2007 Authors * Copyright (C) 1999-2002 Lauris Kaplinski * Copyright (C) 2000-2001 Ximian, Inc. * * Released under GNU GPL, read the file 'COPYING' for more information */ #include "box3d.h" static void sp_3dbox_class_init(SP3DBoxClass *klass); static void sp_3dbox_init(SP3DBox *box3d); static void sp_3dbox_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr); static void sp_shape_release (SPObject *object); static void sp_3dbox_set(SPObject *object, unsigned int key, const gchar *value); static void sp_3dbox_update(SPObject *object, SPCtx *ctx, guint flags); static Inkscape::XML::Node *sp_3dbox_write(SPObject *object, Inkscape::XML::Node *repr, guint flags); //static gchar *sp_3dbox_description(SPItem *item); //static void sp_3dbox_set_shape(SPShape *shape); static void sp_3dbox_set_shape(SP3DBox *box3d); static SPGroupClass *parent_class; GType sp_3dbox_get_type(void) { static GType type = 0; if (!type) { GTypeInfo info = { sizeof(SP3DBoxClass), NULL, /* base_init */ NULL, /* base_finalize */ (GClassInitFunc) sp_3dbox_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof(SP3DBox), 16, /* n_preallocs */ (GInstanceInitFunc) sp_3dbox_init, NULL, /* value_table */ }; type = g_type_register_static(SP_TYPE_GROUP, "SP3DBox", &info, (GTypeFlags) 0); } return type; } static void sp_3dbox_class_init(SP3DBoxClass *klass) { SPObjectClass *sp_object_class = (SPObjectClass *) klass; // SPItemClass *item_class = (SPItemClass *) klass; parent_class = (SPGroupClass *) g_type_class_ref(SP_TYPE_GROUP); sp_object_class->build = sp_3dbox_build; sp_object_class->set = sp_3dbox_set; sp_object_class->write = sp_3dbox_write; sp_object_class->update = sp_3dbox_update; //item_class->description = sp_3dbox_description; } static void sp_3dbox_init(SP3DBox *box3d) { box3d->faces[4] = new Box3DFace (box3d); //box3d->faces[4]->hook_path_to_3dbox(); for (int i = 0; i < 6; ++i) { if (i == 4) continue; box3d->faces[i] = NULL; } } static void sp_3dbox_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr) { if (((SPObjectClass *) (parent_class))->build) { ((SPObjectClass *) (parent_class))->build(object, document, repr); } //sp_object_read_attr(object, "width"); } static void sp_3dbox_release (SPObject *object) { SP3DBox *box3d = SP_3DBOX(object); for (int i = 0; i < 6; ++i) { if (box3d->faces[i]) { delete box3d->faces[i]; // FIXME: Anything else to do? Do we need to clean up the face first? } } if (((SPObjectClass *) parent_class)->release) { ((SPObjectClass *) parent_class)->release (object); } } static void sp_3dbox_set(SPObject *object, unsigned int key, const gchar *value) { //SP3DBox *box3d = SP_3DBOX(object); switch (key) { /*** case SP_ATTR_WIDTH: rect->width.readOrUnset(value); object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); break; ***/ default: if (((SPObjectClass *) (parent_class))->set) { ((SPObjectClass *) (parent_class))->set(object, key, value); } break; } } static void sp_3dbox_update(SPObject *object, SPCtx *ctx, guint flags) { //SP3DBox *box3d = SP_3DBOX(object); /* Invoke parent method */ if (((SPObjectClass *) (parent_class))->update) ((SPObjectClass *) (parent_class))->update(object, ctx, flags); //sp_3dbox_set_shape (box3d); } static Inkscape::XML::Node *sp_3dbox_write(SPObject *object, Inkscape::XML::Node *repr, guint flags) { SP3DBox *box3d = SP_3DBOX(object); // FIXME: How to handle other contexts??? // FIXME: Is tools_isactive(..) more recommended to check for the current context/tool? if (!SP_IS_3DBOX_CONTEXT(inkscape_active_event_context())) return repr; SP3DBoxContext *bc = SP_3DBOX_CONTEXT(inkscape_active_event_context()); if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) { Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_OBJECT_DOCUMENT(object)); repr = xml_doc->createElement("svg:g"); repr->setAttribute("sodipodi:type", "inkscape:3dbox"); } box3d->faces[4]->set_path_repr(); if (bc->extruded) { for (int i = 0; i < 6; ++i) { if (i == 4) continue; box3d->faces[i]->set_path_repr(); } } if (((SPObjectClass *) (parent_class))->write) { ((SPObjectClass *) (parent_class))->write(object, repr, flags); } return repr; } void sp_3dbox_position_set (SP3DBoxContext &bc) { SP3DBox *box3d = SP_3DBOX(bc.item); sp_3dbox_set_shape(box3d); // FIXME: Why does the following call not automatically update the children // of box3d (which is an SPGroup, which should do this)? //SP_OBJECT(box3d)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); /** SP_OBJECT(box3d->path_face1)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); SP_OBJECT(box3d->path_face2)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); SP_OBJECT(box3d->path_face3)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); SP_OBJECT(box3d->path_face4)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); SP_OBJECT(box3d->path_face5)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); SP_OBJECT(box3d->path_face6)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); ***/ } static void // FIXME: Note that this is _not_ the virtual set_shape() method inherited from SPShape, // since SP3DBox is inherited from SPGroup. The following method is "artificially" // called from sp_3dbox_update(). //sp_3dbox_set_shape(SPShape *shape) sp_3dbox_set_shape(SP3DBox *box3d) { // FIXME: How to handle other contexts??? // FIXME: Is tools_isactive(..) more recommended to check for the current context/tool? if (!SP_IS_3DBOX_CONTEXT(inkscape_active_event_context())) return; SP3DBoxContext *bc = SP_3DBOX_CONTEXT(inkscape_active_event_context()); /* Only update the curves during dragging; setting the svg representations is expensive and only done once at the end */ sp_3dbox_recompute_corners (box3d, bc->drag_origin, bc->drag_ptB, bc->drag_ptC); if (bc->extruded) { box3d->faces[0]->set_corners (box3d->corners[0], box3d->corners[4], box3d->corners[6], box3d->corners[2]); box3d->faces[1]->set_corners (box3d->corners[1], box3d->corners[5], box3d->corners[7], box3d->corners[3]); box3d->faces[2]->set_corners (box3d->corners[0], box3d->corners[1], box3d->corners[5], box3d->corners[4]); box3d->faces[3]->set_corners (box3d->corners[2], box3d->corners[3], box3d->corners[7], box3d->corners[6]); box3d->faces[5]->set_corners (box3d->corners[4], box3d->corners[5], box3d->corners[7], box3d->corners[6]); } box3d->faces[4]->set_corners (box3d->corners[0], box3d->corners[1], box3d->corners[3], box3d->corners[2]); sp_3dbox_update_curves (box3d); } void sp_3dbox_recompute_corners (SP3DBox *box, NR::Point const A, NR::Point const B, NR::Point const C) { sp_3dbox_move_corner_in_XY_plane (box, 2, A); sp_3dbox_move_corner_in_XY_plane (box, 1, B); sp_3dbox_move_corner_in_constrained_Z_direction (box, 5, C); } void sp_3dbox_update_curves (SP3DBox *box) { for (int i = 0; i < 6; ++i) { if (box->faces[i]) box->faces[i]->set_curve(); } } void sp_3dbox_move_corner_in_XY_plane (SP3DBox *box, guint id, NR::Point pt) { NR::Point A (box->corners[id ^ Box3D::XY]); /* set the 'front' corners */ box->corners[id] = pt; Box3D::PerspectiveLine pl_one (A, Box3D::Y); Box3D::PerspectiveLine pl_two (pt, Box3D::X); box->corners[id ^ Box3D::X] = pl_one.meet(pl_two); pl_one = Box3D::PerspectiveLine (A, Box3D::X); pl_two = Box3D::PerspectiveLine (pt, Box3D::Y); box->corners[id ^ Box3D::Y] = pl_one.meet(pl_two); /* set the 'rear' corners */ NR::Point B (box->corners[id ^ Box3D::XYZ]); pl_one = Box3D::PerspectiveLine (box->corners[id ^ Box3D::X], Box3D::Z); pl_two = Box3D::PerspectiveLine (B, Box3D::Y); box->corners[id ^ Box3D::XZ] = pl_one.meet(pl_two); pl_one = Box3D::PerspectiveLine (box->corners[id ^ Box3D::XZ], Box3D::X); pl_two = Box3D::PerspectiveLine (pt, Box3D::Z); box->corners[id ^ Box3D::Z] = pl_one.meet(pl_two); pl_one = Box3D::PerspectiveLine (box->corners[id ^ Box3D::Z], Box3D::Y); pl_two = Box3D::PerspectiveLine (B, Box3D::X); box->corners[id ^ Box3D::YZ] = pl_one.meet(pl_two); } void sp_3dbox_move_corner_in_constrained_Z_direction (SP3DBox *box, guint id, NR::Point pt) { /* set the four corners of the face containing corners[id] */ box->corners[id] = Box3D::PerspectiveLine (box->corners[id], Box3D::Z).closest_to(pt); Box3D::PerspectiveLine pl_one (box->corners[id], Box3D::X); Box3D::PerspectiveLine pl_two (box->corners[id ^ Box3D::XZ], Box3D::Z); box->corners[id ^ Box3D::X] = pl_one.meet(pl_two); pl_one = Box3D::PerspectiveLine (box->corners[id ^ Box3D::X], Box3D::Y); pl_two = Box3D::PerspectiveLine (box->corners[id ^ Box3D::XYZ], Box3D::Z); box->corners[id ^ Box3D::XY] = pl_one.meet(pl_two); pl_one = Box3D::PerspectiveLine (box->corners[id], Box3D::Y); pl_two = Box3D::PerspectiveLine (box->corners[id ^ Box3D::YZ], Box3D::Z); box->corners[id ^ Box3D::Y] = pl_one.meet(pl_two); } /* Local Variables: mode:c++ c-file-style:"stroustrup" c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) indent-tabs-mode:nil fill-column:99 End: */ // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :