194 lines
6.6 KiB
C++
194 lines
6.6 KiB
C++
// Filename: collisionLine.cxx
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// Created by: drose (05Jan05)
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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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#include "collisionLine.h"
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#include "collisionHandler.h"
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#include "collisionEntry.h"
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#include "config_collide.h"
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#include "geom.h"
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#include "geomNode.h"
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#include "geomLinestrip.h"
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#include "boundingLine.h"
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#include "lensNode.h"
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#include "lens.h"
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#include "datagram.h"
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#include "datagramIterator.h"
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#include "bamReader.h"
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#include "bamWriter.h"
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#include "qpgeom.h"
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#include "qpgeomLinestrips.h"
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#include "qpgeomVertexWriter.h"
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TypeHandle CollisionLine::_type_handle;
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////////////////////////////////////////////////////////////////////
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// Function: CollisionLine::make_copy
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// Access: Public, Virtual
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// Description:
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////////////////////////////////////////////////////////////////////
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CollisionSolid *CollisionLine::
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make_copy() {
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return new CollisionLine(*this);
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}
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////////////////////////////////////////////////////////////////////
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// Function: CollisionLine::test_intersection
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// Access: Public, Virtual
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// Description:
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////////////////////////////////////////////////////////////////////
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PT(CollisionEntry) CollisionLine::
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test_intersection(const CollisionEntry &entry) const {
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return entry.get_into()->test_intersection_from_line(entry);
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}
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////////////////////////////////////////////////////////////////////
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// Function: CollisionLine::output
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// Access: Public, Virtual
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// Description:
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////////////////////////////////////////////////////////////////////
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void CollisionLine::
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output(ostream &out) const {
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out << "line, o (" << get_origin() << "), d (" << get_direction() << ")";
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}
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////////////////////////////////////////////////////////////////////
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// Function: CollisionLine::fill_viz_geom
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// Access: Protected, Virtual
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// Description: Fills the _viz_geom GeomNode up with Geoms suitable
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// for rendering this solid.
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////////////////////////////////////////////////////////////////////
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void CollisionLine::
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fill_viz_geom() {
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if (collide_cat.is_debug()) {
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collide_cat.debug()
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<< "Recomputing viz for " << *this << "\n";
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}
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static const int num_points = 100;
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static const double scale = 100.0;
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if (use_qpgeom) {
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PT(qpGeomVertexData) vdata = new qpGeomVertexData
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("collision", qpGeomVertexFormat::get_v3cp(),
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qpGeom::UH_static);
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qpGeomVertexWriter vertex(vdata, InternalName::get_vertex());
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qpGeomVertexWriter color(vdata, InternalName::get_color());
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for (int i = 0; i < num_points; i++) {
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double t = ((double)i / (double)num_points - 0.5) * 2.0;
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vertex.add_data3f(get_origin() + t * scale * get_direction());
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color.add_data4f(Colorf(1.0f, 1.0f, 1.0f, 1.0f) +
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fabs(t) * Colorf(0.0f, 0.0f, 0.0f, -1.0f));
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}
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PT(qpGeomLinestrips) line = new qpGeomLinestrips(qpGeom::UH_static);
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line->add_next_vertices(num_points);
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line->close_primitive();
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PT(qpGeom) geom = new qpGeom;
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geom->set_vertex_data(vdata);
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geom->add_primitive(line);
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_viz_geom->add_geom(geom, get_other_viz_state());
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_bounds_viz_geom->add_geom(geom, get_other_bounds_viz_state());
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} else {
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GeomLinestrip *line = new GeomLinestrip;
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PTA_Vertexf verts;
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PTA_Colorf colors;
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PTA_int lengths;
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verts.reserve(num_points);
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colors.reserve(num_points);
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for (int i = 0; i < num_points; i++) {
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double t = ((double)i / (double)num_points - 0.5) * 2.0;
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verts.push_back(get_origin() + t * scale * get_direction());
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colors.push_back(Colorf(1.0f, 1.0f, 1.0f, 1.0f) +
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fabs(t) * Colorf(0.0f, 0.0f, 0.0f, -1.0f));
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}
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line->set_coords(verts);
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line->set_colors(colors, G_PER_VERTEX);
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lengths.push_back(num_points-1);
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line->set_lengths(lengths);
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line->set_num_prims(1);
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_viz_geom->add_geom(line, get_other_viz_state());
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_bounds_viz_geom->add_geom(line, get_other_bounds_viz_state());
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}
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}
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////////////////////////////////////////////////////////////////////
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// Function: CollisionLine::register_with_read_factory
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// Access: Public, Static
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// Description: Tells the BamReader how to create objects of type
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// CollisionLine.
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////////////////////////////////////////////////////////////////////
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void CollisionLine::
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register_with_read_factory() {
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BamReader::get_factory()->register_factory(get_class_type(), make_from_bam);
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}
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////////////////////////////////////////////////////////////////////
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// Function: CollisionLine::write_datagram
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// Access: Public, Virtual
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// Description: Writes the contents of this object to the datagram
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// for shipping out to a Bam file.
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////////////////////////////////////////////////////////////////////
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void CollisionLine::
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write_datagram(BamWriter *manager, Datagram &dg) {
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CollisionRay::write_datagram(manager, dg);
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}
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////////////////////////////////////////////////////////////////////
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// Function: CollisionLine::make_from_bam
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// Access: Protected, Static
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// Description: This function is called by the BamReader's factory
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// when a new object of type CollisionLine is encountered
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// in the Bam file. It should create the CollisionLine
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// and extract its information from the file.
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////////////////////////////////////////////////////////////////////
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TypedWritable *CollisionLine::
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make_from_bam(const FactoryParams ¶ms) {
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CollisionLine *node = new CollisionLine();
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DatagramIterator scan;
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BamReader *manager;
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parse_params(params, scan, manager);
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node->fillin(scan, manager);
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return node;
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}
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////////////////////////////////////////////////////////////////////
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// Function: CollisionLine::fillin
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// Access: Protected
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// Description: This internal function is called by make_from_bam to
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// read in all of the relevant data from the BamFile for
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// the new CollisionLine.
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////////////////////////////////////////////////////////////////////
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void CollisionLine::
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fillin(DatagramIterator &scan, BamReader *manager) {
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CollisionRay::fillin(scan, manager);
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}
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