86 lines
3.1 KiB
C++
86 lines
3.1 KiB
C++
// Filename: finiteBoundingVolume.cxx
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// Created by: drose (02Oct99)
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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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#include "finiteBoundingVolume.h"
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#include "boundingBox.h"
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#include "config_mathutil.h"
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TypeHandle FiniteBoundingVolume::_type_handle;
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////////////////////////////////////////////////////////////////////
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// Function: FiniteBoundingVolume::get_volume
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// Access: Public, Virtual
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// Description:
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////////////////////////////////////////////////////////////////////
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PN_stdfloat FiniteBoundingVolume::
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get_volume() const {
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nassertr(!is_infinite(), 0.0f);
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if (is_empty()) {
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return 0.0f;
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}
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mathutil_cat.warning()
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<< get_type() << "::get_volume() called\n";
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// We don't know how to compute the volume of this shape correctly;
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// just calculate the volume of its containing box.
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BoundingBox box(get_min(), get_max());
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box.local_object();
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return box.get_volume();
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}
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////////////////////////////////////////////////////////////////////
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// Function: FiniteBoundingVolume::as_finite_bounding_volume
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// Access: Public, Virtual
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// Description: Virtual downcast method. Returns this object as a
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// pointer of the indicated type, if it is in fact that
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// type. Returns NULL if it is not that type.
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////////////////////////////////////////////////////////////////////
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const FiniteBoundingVolume *FiniteBoundingVolume::
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as_finite_bounding_volume() const {
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return this;
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}
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////////////////////////////////////////////////////////////////////
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// Function: FiniteBoundingVolume::around_lines
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// Access: Protected, Virtual
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// Description: Double-dispatch support: called by around_other()
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// when the type of the first element in the list is
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// known to be a nonempty line.
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////////////////////////////////////////////////////////////////////
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bool FiniteBoundingVolume::
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around_lines(const BoundingVolume **, const BoundingVolume **) {
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_flags = F_infinite;
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// Since it's a FiniteBoundingVolume, we can't do any better than
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// making it infinite. So we return true.
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return true;
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}
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////////////////////////////////////////////////////////////////////
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// Function: FiniteBoundingVolume::around_planes
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// Access: Protected, Virtual
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// Description: Double-dispatch support: called by around_other()
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// when the type of the first element in the list is
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// known to be a nonempty plane.
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////////////////////////////////////////////////////////////////////
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bool FiniteBoundingVolume::
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around_planes(const BoundingVolume **, const BoundingVolume **) {
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_flags = F_infinite;
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// Since it's a FiniteBoundingVolume, we can't do any better than
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// making it infinite. So we return true.
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return true;
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}
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