364 lines
14 KiB
Plaintext
364 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) Carnegie Mellon University. All rights reserved.
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//
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// All use of this software is subject to the terms of the revised BSD
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// license. You should have received a copy of this license along
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// with this source code in a file named "LICENSE."
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//
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////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::set_preserved
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// Access: Published
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// Description: Sets the "preserved" flag. When this is true, the
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// GeomNode will be left untouched by any flatten
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// operations.
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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_preserved
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// Access: Published
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// Description: Returns the "preserved" flag. When this is true, the
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// GeomNode will be left untouched by any flatten
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// operations.
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////////////////////////////////////////////////////////////////////
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INLINE bool GeomNode::
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get_preserved() const {
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return _preserved;
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::get_num_geoms
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// Access: Published
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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_geom
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// Access: Published
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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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// modify_geom().
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////////////////////////////////////////////////////////////////////
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INLINE CPT(Geom) GeomNode::
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get_geom(int n) const {
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CDReader cdata(_cycler);
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CPT(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.get_read_pointer();
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::modify_geom
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// Access: Published
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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 PT(Geom) GeomNode::
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modify_geom(int n) {
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CDWriter cdata(_cycler, true);
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PT(GeomList) geoms = cdata->modify_geoms();
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nassertr(n >= 0 && n < (int)geoms->size(), NULL);
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mark_internal_bounds_stale();
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return (*geoms)[n]._geom.get_write_pointer();
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}
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////////////////////////////////////////////////////////////////////
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// Function: GeomNode::get_geom_state
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// Access: Published
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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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CPT(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: Published
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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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PT(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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PT(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: Published
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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 CPT(GeomNode::GeomList) GeomNode::CData::
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get_geoms() const {
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return _geoms.get_read_pointer();
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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 PT(GeomNode::GeomList) GeomNode::CData::
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modify_geoms() {
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return _geoms.get_write_pointer();
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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.is_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 CPT(Geom) GeomNode::Geoms::
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get_geom(int n) const {
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nassertr(!_geoms.is_null(), NULL);
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nassertr(n >= 0 && n < (int)_geoms->size(), NULL);
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return (*_geoms)[n]._geom.get_read_pointer();
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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.is_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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