170 lines
6.0 KiB
C++
170 lines
6.0 KiB
C++
// Filename: projectionScreen.h
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// Created by: drose (11Dec01)
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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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#ifndef PROJECTIONSCREEN_H
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#define PROJECTIONSCREEN_H
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#include "pandabase.h"
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#include "pandaNode.h"
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#include "lensNode.h"
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#include "geomNode.h"
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#include "nodePath.h"
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#include "internalName.h"
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#include "pointerTo.h"
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#include "pfmFile.h"
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class Geom;
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class WorkingNodePath;
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////////////////////////////////////////////////////////////////////
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// Class : ProjectionScreen
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// Description : A ProjectionScreen implements a simple system for
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// projective texturing. The ProjectionScreen node is
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// the parent of a hierarchy of geometry that is
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// considered a "screen"; the ProjectionScreen will
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// automatically recompute all the UV's (for a
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// particular texture stage) on its subordinate geometry
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// according to the relative position and lens
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// parameters of the indicated LensNode.
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//
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// All this does is recompute UV's; the caller is
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// responsible for applying the appropriate texture(s)
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// to the geometry.
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//
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// This does not take advantage of any hardware-assisted
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// projective texturing; all of the UV's are computed in
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// the CPU. (Use NodePath::project_texture() to enable
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// hardware-assisted projective texturing.) However,
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// the ProjectionScreen interface does support any kind
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// of lens, linear or nonlinear, that might be defined
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// using the Lens interface, including fisheye and
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// cylindrical lenses.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDAFX ProjectionScreen : public PandaNode {
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PUBLISHED:
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ProjectionScreen(const string &name = "");
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virtual ~ProjectionScreen();
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protected:
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ProjectionScreen(const ProjectionScreen ©);
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public:
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virtual PandaNode *make_copy() const;
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virtual bool cull_callback(CullTraverser *trav, CullTraverserData &data);
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PUBLISHED:
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void set_projector(const NodePath &projector);
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INLINE const NodePath &get_projector() const;
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INLINE void clear_undist_lut();
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INLINE void set_undist_lut(const PfmFile &undist_lut);
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INLINE bool has_undist_lut() const;
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INLINE const PfmFile &get_undist_lut() const;
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PT(GeomNode) generate_screen(const NodePath &projector,
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const string &screen_name,
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int num_x_verts, int num_y_verts,
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PN_stdfloat distance, PN_stdfloat fill_ratio);
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void regenerate_screen(const NodePath &projector, const string &screen_name,
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int num_x_verts, int num_y_verts, PN_stdfloat distance,
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PN_stdfloat fill_ratio);
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PT(PandaNode) make_flat_mesh(const NodePath &this_np, const NodePath &camera);
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INLINE void set_texcoord_name(const string &texcoord_name);
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INLINE string get_texcoord_name() const;
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INLINE void set_invert_uvs(bool invert_uvs);
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INLINE bool get_invert_uvs() const;
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INLINE void set_texcoord_3d(bool texcoord_3d);
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INLINE bool get_texcoord_3d() const;
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INLINE void set_vignette_on(bool vignette_on);
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INLINE bool get_vignette_on() const;
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INLINE void set_vignette_color(const LColor &vignette_color);
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INLINE const LColor &get_vignette_color() const;
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INLINE void set_frame_color(const LColor &frame_color);
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INLINE const LColor &get_frame_color() const;
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INLINE void set_auto_recompute(bool auto_recompute);
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INLINE bool get_auto_recompute() const;
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void recompute();
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INLINE const UpdateSeq &get_last_screen() const;
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bool recompute_if_stale();
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bool recompute_if_stale(const NodePath &this_np);
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private:
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void do_recompute(const NodePath &this_np);
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void recompute_node(const WorkingNodePath &np, LMatrix4 &rel_mat, bool &computed_rel_mat);
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void recompute_child(const WorkingNodePath &np, LMatrix4 &rel_mat, bool &computed_rel_mat);
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void recompute_geom_node(const WorkingNodePath &np, LMatrix4 &rel_mat, bool &computed_rel_mat);
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void recompute_geom(Geom *geom, const LMatrix4 &rel_mat);
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PandaNode *
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make_mesh_node(PandaNode *result_parent, const WorkingNodePath &np,
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const NodePath &camera,
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LMatrix4 &rel_mat, bool &computed_rel_mat);
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void make_mesh_children(PandaNode *new_node, const WorkingNodePath &np,
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const NodePath &camera,
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LMatrix4 &rel_mat, bool &computed_rel_mat);
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PT(GeomNode) make_mesh_geom_node(const WorkingNodePath &np,
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const NodePath &camera,
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LMatrix4 &rel_mat,
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bool &computed_rel_mat);
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PT(Geom) make_mesh_geom(const Geom *geom, Lens *lens, LMatrix4 &rel_mat);
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NodePath _projector;
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PT(LensNode) _projector_node;
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bool _has_undist_lut;
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PfmFile _undist_lut;
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PT(InternalName) _texcoord_name;
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bool _invert_uvs;
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bool _texcoord_3d;
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bool _vignette_on;
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LColor _vignette_color;
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LColor _frame_color;
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LMatrix4 _rel_top_mat;
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bool _computed_rel_top_mat;
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bool _stale;
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UpdateSeq _projector_lens_change;
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UpdateSeq _last_screen;
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bool _auto_recompute;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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PandaNode::init_type();
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register_type(_type_handle, "ProjectionScreen",
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PandaNode::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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};
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#include "projectionScreen.I"
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#endif
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