157 lines
6.5 KiB
Plaintext
157 lines
6.5 KiB
Plaintext
// Filename: sceneGraphReducer.I
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// Created by: drose (14Mar02)
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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: SceneGraphReducer::Constructor
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// Access: Published
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE SceneGraphReducer::
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SceneGraphReducer() :
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_combine_radius(0.0f)
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{
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}
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////////////////////////////////////////////////////////////////////
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// Function: SceneGraphReducer::Destructor
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// Access: Published
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// Description:
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////////////////////////////////////////////////////////////////////
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INLINE SceneGraphReducer::
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~SceneGraphReducer() {
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}
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////////////////////////////////////////////////////////////////////
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// Function: SceneGraphReducer::set_combine_radius
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// Access: Published
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// Description: Specifies the radius that is used in conjunction with
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// CS_within_radius to decide whether a subgraph's
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// siblings should be combined into a single node or
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// not.
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//
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// If the CS_within_radius bit is included in the
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// combine_siblings_bits parameter passed to flatten,
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// than any nodes whose bounding volume is smaller than
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// the indicated radius will be combined together (as if
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// CS_other were set).
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////////////////////////////////////////////////////////////////////
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INLINE void SceneGraphReducer::
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set_combine_radius(float combine_radius) {
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_combine_radius = combine_radius;
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}
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////////////////////////////////////////////////////////////////////
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// Function: SceneGraphReducer::get_combine_radius
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// Access: Published
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// Description: Returns the radius that is used in conjunction with
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// CS_within_radius. See set_combine_radius().
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////////////////////////////////////////////////////////////////////
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INLINE float SceneGraphReducer::
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get_combine_radius() const {
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return _combine_radius;
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}
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////////////////////////////////////////////////////////////////////
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// Function: SceneGraphReducer::apply_attribs
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// Access: Published
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// Description: Walks the scene graph, accumulating attribs of
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// the indicated types, applying them to the vertices,
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// and removing them from the scene graph. This has a
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// performance optimization benefit in itself, but is
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// especially useful to pave the way for a call to
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// flatten() and greatly improve the effectiveness of
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// the flattening operation.
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//
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// Multiply instanced geometry is duplicated before the
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// attribs are applied.
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//
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// Of course, this operation does make certain dynamic
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// operations impossible.
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////////////////////////////////////////////////////////////////////
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INLINE void SceneGraphReducer::
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apply_attribs(PandaNode *node, int attrib_types) {
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PStatTimer timer(_apply_collector);
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AccumulatedAttribs attribs;
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r_apply_attribs(node, attribs, attrib_types, _transformer);
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}
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////////////////////////////////////////////////////////////////////
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// Function: SceneGraphReducer::apply_attribs
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// Access: Published
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// Description: This flavor of apply_attribs() can be called
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// recursively from within another flatten process
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// (e.g. from PandaNode::apply_attribs_to_vertices()).
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// The parameters were presumably received from a parent
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// SceneGraphReducer object.
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////////////////////////////////////////////////////////////////////
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INLINE void SceneGraphReducer::
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apply_attribs(PandaNode *node, const AccumulatedAttribs &attribs,
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int attrib_types, GeomTransformer &transformer) {
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r_apply_attribs(node, attribs, attrib_types, transformer);
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}
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////////////////////////////////////////////////////////////////////
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// Function: SceneGraphReducer::collect_vertex_data
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// Access: Published
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// Description: Collects all different GeomVertexData blocks that
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// have compatible formats at this node and below into a
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// single, unified block (or at least multiple larger
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// blocks). This is intended to reduce rendering
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// overhead incurred by switching vertex buffers.
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//
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// The set of bits passed in collect_bits indicates
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// which properties are used to differentiate
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// GeomVertexData blocks. If it is 0, then more blocks
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// will be combined together than if it is nonzero.
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////////////////////////////////////////////////////////////////////
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INLINE int SceneGraphReducer::
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collect_vertex_data(PandaNode *root, int collect_bits) {
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PStatTimer timer(_collect_collector);
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return r_collect_vertex_data(root, collect_bits, _transformer);
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}
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////////////////////////////////////////////////////////////////////
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// Function: SceneGraphReducer::make_nonindexed
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// Access: Published
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// Description: Converts indexed geometry to nonindexed geometry at
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// the indicated node and below, by duplicating vertices
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// where necessary. The parameter nonindexed_bits is a
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// union of bits defined in
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// SceneGraphReducer::MakeNonindexed, which specifes
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// which types of geometry to avoid making nonindexed.
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////////////////////////////////////////////////////////////////////
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INLINE int SceneGraphReducer::
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make_nonindexed(PandaNode *root, int nonindexed_bits) {
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PStatTimer timer(_make_nonindexed_collector);
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return r_make_nonindexed(root, nonindexed_bits);
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}
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////////////////////////////////////////////////////////////////////
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// Function: SceneGraphReducer::unify
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// Access: Published
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// Description: Calls unify() on every GeomNode at this level and
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// below.
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////////////////////////////////////////////////////////////////////
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INLINE void SceneGraphReducer::
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unify(PandaNode *root) {
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PStatTimer timer(_unify_collector);
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r_unify(root);
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}
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