374 lines
14 KiB
Plaintext
374 lines
14 KiB
Plaintext
// Filename: geomNode.I
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// Created by: drose (23Feb02)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::get_num_geoms
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// Access: Public
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// Description: Returns the number of geoms in the node.
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////////////////////////////////////////////////////////////////////
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INLINE int GeomNode::
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get_num_geoms() const {
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CDReader cdata(_cycler);
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return cdata->get_geoms()->size();
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::get_num_geoms
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// Access: Public
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// Description: Returns the number of geoms in the node.
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////////////////////////////////////////////////////////////////////
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INLINE void GeomNode::
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set_preserved(bool value){
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_preserved = value;
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::get_geom
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// Access: Public
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// Description: Returns the nth geom of the node. This object should
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// not be modified, since the same object might be
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// shared between multiple different GeomNodes, but see
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// get_unique_geom().
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////////////////////////////////////////////////////////////////////
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INLINE const Geom *GeomNode::
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get_geom(int n) const {
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CDReader cdata(_cycler);
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const GeomList &geoms = *(cdata->get_geoms());
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nassertr(n >= 0 && n < (int)geoms.size(), NULL);
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return geoms[n]._geom;
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::get_unique_geom
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// Access: Public
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// Description: This method is deprecated; you should call
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// modify_geom() instead.
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////////////////////////////////////////////////////////////////////
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INLINE Geom *GeomNode::
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get_unique_geom(int n) {
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pgraph_cat.warning()
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<< "Deprecated method GeomNode::get_unique_geom() called. Use modify_geom() instead.\n";
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return modify_geom(n);
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::modify_geom
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// Access: Public
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// Description: Returns the nth geom of the node, suitable for
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// modifying it. If the nth Geom has multiple reference
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// counts to it, reassigns it to an identical copy
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// first, and returns the new copy--this provides a
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// "copy on write" that ensures that the Geom that is
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// returned is unique to this GeomNode and is not shared
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// with any other GeomNodes.
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//
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// Note that if this method is called in a downstream
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// stage (for instance, during cull or draw), then it
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// will propagate the new list of Geoms upstream all the
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// way to pipeline stage 0, which may step on changes
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// that were made independently in pipeline stage 0.
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// Use with caution.
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////////////////////////////////////////////////////////////////////
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INLINE Geom *GeomNode::
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modify_geom(int n) {
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CDWriter cdata(_cycler, true);
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GeomList &geoms = *(cdata->modify_geoms());
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nassertr(n >= 0 && n < (int)geoms.size(), NULL);
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Geom *geom = geoms[n]._geom;
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if (geom->get_ref_count() > 1) {
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geom = geoms[n]._geom = geom->make_copy();
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}
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return geom;
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::get_geom_state
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// Access: Public
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// Description: Returns the RenderState associated with the nth geom
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// of the node. This is just the RenderState directly
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// associated with the Geom; the actual state in which
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// the Geom is rendered will also be affected by
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// RenderStates that appear on the scene graph in nodes
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// above this GeomNode.
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////////////////////////////////////////////////////////////////////
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INLINE const RenderState *GeomNode::
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get_geom_state(int n) const {
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CDReader cdata(_cycler);
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const GeomList &geoms = *(cdata->get_geoms());
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nassertr(n >= 0 && n < (int)geoms.size(), NULL);
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return geoms[n]._state;
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::set_geom_state
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// Access: Public
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// Description: Changes the RenderState associated with the nth geom
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// of the node. This is just the RenderState directly
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// associated with the Geom; the actual state in which
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// the Geom is rendered will also be affected by
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// RenderStates that appear on the scene graph in nodes
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// above this GeomNode.
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//
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// Note that if this method is called in a downstream
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// stage (for instance, during cull or draw), then it
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// will propagate the new list of Geoms upstream all the
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// way to pipeline stage 0, which may step on changes
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// that were made independently in pipeline stage 0.
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// Use with caution.
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////////////////////////////////////////////////////////////////////
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INLINE void GeomNode::
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set_geom_state(int n, const RenderState *state) {
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CDWriter cdata(_cycler, true);
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GeomList &geoms = *(cdata->modify_geoms());
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nassertv(n >= 0 && n < (int)geoms.size());
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geoms[n]._state = state;
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::remove_geom
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// Access: Published
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// Description: Removes the nth geom from the node.
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////////////////////////////////////////////////////////////////////
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INLINE void GeomNode::
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remove_geom(int n) {
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CDWriter cdata(_cycler);
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GeomList &geoms = *(cdata->modify_geoms());
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nassertv(n >= 0 && n < (int)geoms.size());
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geoms.erase(geoms.begin() + n);
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mark_internal_bounds_stale();
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::remove_all_geoms
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// Access: Published
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// Description: Removes all the geoms from the node at once.
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////////////////////////////////////////////////////////////////////
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INLINE void GeomNode::
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remove_all_geoms() {
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CDWriter cdata(_cycler);
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cdata->set_geoms(new GeomList);
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mark_internal_bounds_stale();
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::get_default_collide_mask
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// Access: Published, Static
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// Description: Returns the default into_collide_mask assigned to new
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// GeomNodes.
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////////////////////////////////////////////////////////////////////
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INLINE CollideMask GeomNode::
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get_default_collide_mask() {
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return default_geom_node_collide_mask;
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::count_name
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// Access: Private
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// Description: Increments the count for the indicated InternalName.
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////////////////////////////////////////////////////////////////////
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INLINE void GeomNode::
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count_name(GeomNode::NameCount &name_count, const InternalName *name) {
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pair<NameCount::iterator, bool> result =
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name_count.insert(NameCount::value_type(name, 1));
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if (!result.second) {
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(*result.first).second++;
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}
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::get_name_count
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// Access: Private
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// Description: Returns the count for the indicated InternalName.
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////////////////////////////////////////////////////////////////////
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INLINE int GeomNode::
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get_name_count(const GeomNode::NameCount &name_count, const InternalName *name) {
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NameCount::const_iterator ni;
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ni = name_count.find(name);
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if (ni != name_count.end()) {
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return (*ni).second;
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}
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return 0;
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::get_geoms
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// Access: Public
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// Description: Returns an object that can be used to walk through
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// the list of geoms of the node. When you intend to
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// visit multiple geoms, using this is slightly
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// faster than calling get_geom() directly on the
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// GeomNode, since this object avoids reopening the
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// PipelineCycler each time.
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//
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// This object also protects you from self-modifying
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// loops (e.g. adding or removing geoms during
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// traversal), since a virtual copy of the geoms is
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// made ahead of time. The virtual copy is fast--it is
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// a form of copy-on-write, so the list is not actually
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// copied unless it is modified during the traversal.
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////////////////////////////////////////////////////////////////////
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INLINE GeomNode::Geoms GeomNode::
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get_geoms(Thread *current_thread) const {
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CDReader cdata(_cycler, current_thread);
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return Geoms(cdata);
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::GeomEntry::Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE GeomNode::GeomEntry::
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GeomEntry(Geom *geom, const RenderState *state) :
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_geom(geom),
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_state(state)
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{
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::CData::Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE GeomNode::CData::
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CData() :
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_geoms(new GeomNode::GeomList)
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{
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::CData::get_geoms
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// Access: Public
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// Description: Returns a read-only pointer to the _geoms list.
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////////////////////////////////////////////////////////////////////
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INLINE const GeomNode::GeomList *GeomNode::CData::
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get_geoms() const {
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return _geoms;
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::CData::modify_geoms
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// Access: Public
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// Description: Returns a modifiable, unique pointer to the _geoms
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// list.
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////////////////////////////////////////////////////////////////////
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INLINE GeomNode::GeomList *GeomNode::CData::
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modify_geoms() {
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if (_geoms->get_ref_count() > 1) {
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_geoms = new GeomList(*_geoms);
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}
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return _geoms;
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::CData::set_geoms
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// Access: Public
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// Description: Replaces the _geoms list with a new list.
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////////////////////////////////////////////////////////////////////
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INLINE void GeomNode::CData::
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set_geoms(GeomNode::GeomList *geoms) {
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_geoms = geoms;
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::Geoms::Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE GeomNode::Geoms::
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Geoms() {
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::Geoms::Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE GeomNode::Geoms::
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Geoms(const GeomNode::CData *cdata) :
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_geoms(cdata->get_geoms())
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{
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::Geoms::Copy Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE GeomNode::Geoms::
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Geoms(const GeomNode::Geoms ©) :
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_geoms(copy._geoms)
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{
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::Geoms::Copy Assignment Operator
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE void GeomNode::Geoms::
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operator = (const GeomNode::Geoms ©) {
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_geoms = copy._geoms;
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::Geoms::get_num_geoms
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// Access: Public
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// Description: Returns the number of geoms of the node.
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////////////////////////////////////////////////////////////////////
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INLINE int GeomNode::Geoms::
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get_num_geoms() const {
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nassertr(_geoms != (GeomList *)NULL, 0);
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return _geoms->size();
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::Geoms::get_geom
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// Access: Public
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// Description: Returns the nth geom of the node. This object should
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// not be modified, since the same object might be
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// shared between multiple different GeomNodes.
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////////////////////////////////////////////////////////////////////
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INLINE const Geom *GeomNode::Geoms::
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get_geom(int n) const {
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nassertr(_geoms != (GeomList *)NULL, NULL);
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nassertr(n >= 0 && n < (int)_geoms->size(), NULL);
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return (*_geoms)[n]._geom;
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::Geoms::get_geom_state
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// Access: Public
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// Description: Returns the RenderState associated with the nth geom
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// of the node. This is just the RenderState directly
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// associated with the Geom; the actual state in which
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// the Geom is rendered will also be affected by
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// RenderStates that appear on the scene graph in nodes
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// above this GeomNode.
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////////////////////////////////////////////////////////////////////
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INLINE const RenderState *GeomNode::Geoms::
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get_geom_state(int n) const {
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nassertr(_geoms != (GeomList *)NULL, NULL);
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nassertr(n >= 0 && n < (int)_geoms->size(), NULL);
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return (*_geoms)[n]._state;
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}
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