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/*
* 3D box face implementation
*
* Authors:
* Maximilian Albert <Anhalter42@gmx.de>
* Abhishek Sharma
*
* Copyright (C) 2007 Authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "box3d-side.h"
#include "document.h"
#include "xml/document.h"
#include "xml/repr.h"
#include "display/curve.h"
#include "svg/svg.h"
#include "attributes.h"
#include "inkscape.h"
#include "persp3d.h"
#include "box3d-context.h"
#include "preferences.h"
#include "desktop-style.h"
#include "box3d.h"
static void box3d_side_class_init (Box3DSideClass *klass);
static void box3d_side_init (Box3DSide *side);
static void box3d_side_build (SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
static Inkscape::XML::Node *box3d_side_write (SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
static void box3d_side_set (SPObject *object, unsigned int key, const gchar *value);
static void box3d_side_update (SPObject *object, SPCtx *ctx, guint flags);
static void box3d_side_set_shape (SPShape *shape);
static void box3d_side_compute_corner_ids(Box3DSide *side, unsigned int corners[4]);
static SPShapeClass *parent_class;
GType
box3d_side_get_type (void)
{
static GType type = 0;
if (!type) {
GTypeInfo info = {
sizeof (Box3DSideClass),
NULL, NULL,
(GClassInitFunc) box3d_side_class_init,
NULL, NULL,
sizeof (Box3DSide),
16,
(GInstanceInitFunc) box3d_side_init,
NULL, /* value_table */
};
type = g_type_register_static (SP_TYPE_SHAPE, "Box3DSide", &info, (GTypeFlags)0);
}
return type;
}
static void
box3d_side_class_init (Box3DSideClass *klass)
{
GObjectClass * gobject_class;
SPObjectClass * sp_object_class;
SPItemClass * item_class;
SPPathClass * path_class;
SPShapeClass * shape_class;
gobject_class = (GObjectClass *) klass;
sp_object_class = (SPObjectClass *) klass;
item_class = (SPItemClass *) klass;
path_class = (SPPathClass *) klass;
shape_class = (SPShapeClass *) klass;
parent_class = (SPShapeClass *)g_type_class_ref (SP_TYPE_SHAPE);
sp_object_class->build = box3d_side_build;
sp_object_class->write = box3d_side_write;
sp_object_class->set = box3d_side_set;
sp_object_class->update = box3d_side_update;
shape_class->set_shape = box3d_side_set_shape;
}
static void
box3d_side_init (Box3DSide * side)
{
side->dir1 = Box3D::NONE;
side->dir2 = Box3D::NONE;
side->front_or_rear = Box3D::FRONT;
}
static void box3d_side_build(SPObject * object, SPDocument * document, Inkscape::XML::Node * repr)
{
if (((SPObjectClass *) parent_class)->build) {
((SPObjectClass *) parent_class)->build(object, document, repr);
}
object->readAttr( "inkscape:box3dsidetype" );
}
static Inkscape::XML::Node *
box3d_side_write (SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
{
Box3DSide *side = SP_BOX3D_SIDE (object);
if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
// this is where we end up when saving as plain SVG (also in other circumstances?)
// thus we don' set "sodipodi:type" so that the box is only saved as an ordinary svg:path
repr = xml_doc->createElement("svg:path");
}
if (flags & SP_OBJECT_WRITE_EXT) {
sp_repr_set_int(repr, "inkscape:box3dsidetype", side->dir1 ^ side->dir2 ^ side->front_or_rear);
}
static_cast<SPShape *>(object)->setShape();
/* Duplicate the path */
SPCurve const *curve = ((SPShape *) object)->curve;
//Nulls might be possible if this called iteratively
if ( !curve ) {
return NULL;
}
char *d = sp_svg_write_path ( curve->get_pathvector() );
repr->setAttribute("d", d);
g_free (d);
if (((SPObjectClass *) (parent_class))->write)
((SPObjectClass *) (parent_class))->write (object, xml_doc, repr, flags);
return repr;
}
static void
box3d_side_set (SPObject *object, unsigned int key, const gchar *value)
{
Box3DSide *side = SP_BOX3D_SIDE (object);
// TODO: In case the box was recreated (by undo, e.g.) we need to recreate the path
// (along with other info?) from the parent box.
/* fixme: we should really collect updates */
switch (key) {
case SP_ATTR_INKSCAPE_BOX3D_SIDE_TYPE:
if (value) {
guint desc = atoi (value);
if (!Box3D::is_face_id(desc)) {
g_print ("desc is not a face id: =%s=\n", value);
}
g_return_if_fail (Box3D::is_face_id (desc));
Box3D::Axis plane = (Box3D::Axis) (desc & 0x7);
plane = (Box3D::is_plane(plane) ? plane : Box3D::orth_plane_or_axis(plane));
side->dir1 = Box3D::extract_first_axis_direction(plane);
side->dir2 = Box3D::extract_second_axis_direction(plane);
side->front_or_rear = (Box3D::FrontOrRear) (desc & 0x8);
object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
}
break;
default:
if (((SPObjectClass *) parent_class)->set)
((SPObjectClass *) parent_class)->set (object, key, value);
break;
}
}
static void
box3d_side_update (SPObject *object, SPCtx *ctx, guint flags)
{
if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
flags &= ~SP_OBJECT_USER_MODIFIED_FLAG_B; // since we change the description, it's not a "just translation" anymore
}
if (flags & (SP_OBJECT_MODIFIED_FLAG |
SP_OBJECT_STYLE_MODIFIED_FLAG |
SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
static_cast<SPShape *>(object)->setShape ();
}
if (((SPObjectClass *) parent_class)->update)
((SPObjectClass *) parent_class)->update (object, ctx, flags);
}
/* Create a new Box3DSide and append it to the parent box */
Box3DSide * Box3DSide::createBox3DSide(SPBox3D *box)
{
Box3DSide *box3d_side = 0;
Inkscape::XML::Document *xml_doc = box->document->rdoc;
Inkscape::XML::Node *repr_side = xml_doc->createElement("svg:path");
repr_side->setAttribute("sodipodi:type", "inkscape:box3dside");
box3d_side = static_cast<Box3DSide *>(box->appendChildRepr(repr_side));
return box3d_side;
}
/*
* Function which return the type attribute for Box3D.
* Acts as a replacement for directly accessing the XML Tree directly.
*/
long long int Box3DSide::getFaceId()
{
return this->getIntAttribute("inkscape:box3dsidetype", -1);
}
void
box3d_side_position_set (Box3DSide *side) {
box3d_side_set_shape (SP_SHAPE (side));
// This call is responsible for live update of the sides during the initial drag
side->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
}
void
box3d_side_set_shape (SPShape *shape)
{
Box3DSide *side = SP_BOX3D_SIDE (shape);
if (!side->document->getRoot()) {
// avoid a warning caused by sp_document_height() (which is called from sp_item_i2d_affine() below)
// when reading a file containing 3D boxes
return;
}
SPObject *parent = side->parent;
if (!SP_IS_BOX3D(parent)) {
g_warning ("Parent of 3D box side is not a 3D box.\n");
return;
}
SPBox3D *box = SP_BOX3D(parent);
Persp3D *persp = box3d_side_perspective(side);
if (!persp) {
return;
}
// TODO: Draw the correct quadrangle here
// To do this, determine the perspective of the box, the orientation of the side (e.g., XY-FRONT)
// compute the coordinates of the corners in P^3, project them onto the canvas, and draw the
// resulting path.
unsigned int corners[4];
box3d_side_compute_corner_ids(side, corners);
SPCurve *c = new SPCurve();
if (!box3d_get_corner_screen(box, corners[0]).isFinite() ||
!box3d_get_corner_screen(box, corners[1]).isFinite() ||
!box3d_get_corner_screen(box, corners[2]).isFinite() ||
!box3d_get_corner_screen(box, corners[3]).isFinite() )
{
g_warning ("Trying to draw a 3D box side with invalid coordinates.\n");
return;
}
c->moveto(box3d_get_corner_screen(box, corners[0]));
c->lineto(box3d_get_corner_screen(box, corners[1]));
c->lineto(box3d_get_corner_screen(box, corners[2]));
c->lineto(box3d_get_corner_screen(box, corners[3]));
c->closepath();
/* Reset the shape'scurve to the "original_curve"
* This is very important for LPEs to work properly! (the bbox might be recalculated depending on the curve in shape)*/
shape->setCurveInsync( c, TRUE);
if (sp_lpe_item_has_path_effect(SP_LPE_ITEM(shape)) && sp_lpe_item_path_effects_enabled(SP_LPE_ITEM(shape))) {
SPCurve *c_lpe = c->copy();
bool success = sp_lpe_item_perform_path_effect(SP_LPE_ITEM (shape), c_lpe);
if (success) {
shape->setCurveInsync( c_lpe, TRUE);
}
c_lpe->unref();
}
c->unref();
}
gchar *box3d_side_axes_string(Box3DSide *side)
{
GString *pstring = g_string_new("");
g_string_printf (pstring, "%s", Box3D::string_from_axes ((Box3D::Axis) (side->dir1 ^ side->dir2)));
switch ((Box3D::Axis) (side->dir1 ^ side->dir2)) {
case Box3D::XY:
g_string_append_printf (pstring, (side->front_or_rear == Box3D::FRONT) ? "front" : "rear");
break;
case Box3D::XZ:
g_string_append_printf (pstring, (side->front_or_rear == Box3D::FRONT) ? "top" : "bottom");
break;
case Box3D::YZ:
g_string_append_printf (pstring, (side->front_or_rear == Box3D::FRONT) ? "right" : "left");
break;
default:
break;
}
return pstring->str;
}
static void
box3d_side_compute_corner_ids(Box3DSide *side, unsigned int corners[4]) {
Box3D::Axis orth = Box3D::third_axis_direction (side->dir1, side->dir2);
corners[0] = (side->front_or_rear ? orth : 0);
corners[1] = corners[0] ^ side->dir1;
corners[2] = corners[0] ^ side->dir1 ^ side->dir2;
corners[3] = corners[0] ^ side->dir2;
}
Persp3D *
box3d_side_perspective(Box3DSide *side) {
return SP_BOX3D(side->parent)->persp_ref->getObject();
}
Inkscape::XML::Node *box3d_side_convert_to_path(Box3DSide *side) {
// TODO: Copy over all important attributes (see sp_selected_item_to_curved_repr() for an example)
SPDocument *doc = side->document;
Inkscape::XML::Document *xml_doc = doc->getReprDoc();
Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
repr->setAttribute("d", side->getAttribute("d"));
repr->setAttribute("style", side->getAttribute("style"));
return repr;
}
/*
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:fileencoding=utf-8:textwidth=99 :
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