147 lines
4.7 KiB
C++
147 lines
4.7 KiB
C++
// Filename: fltTransformScale.cxx
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// Created by: drose (30Aug00)
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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, 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://www.panda3d.org/license.txt .
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//
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// To contact the maintainers of this program write to
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// panda3d@yahoogroups.com .
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//
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////////////////////////////////////////////////////////////////////
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#include "fltTransformScale.h"
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#include "fltRecordReader.h"
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#include "fltRecordWriter.h"
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TypeHandle FltTransformScale::_type_handle;
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////////////////////////////////////////////////////////////////////
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// Function: FltTransformScale::Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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FltTransformScale::
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FltTransformScale(FltHeader *header) : FltTransformRecord(header) {
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_center.set(0.0, 0.0, 0.0);
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_scale.set(1.0, 1.0, 1.0);
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}
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////////////////////////////////////////////////////////////////////
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// Function: FltTransformScale::set
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// Access: Public
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// Description: Defines the scale.
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////////////////////////////////////////////////////////////////////
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void FltTransformScale::
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set(const LPoint3d ¢er, const LVecBase3f &scale) {
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_center = center;
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_scale = scale;
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recompute_matrix();
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}
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////////////////////////////////////////////////////////////////////
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// Function: FltTransformScale::get_center
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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const LPoint3d &FltTransformScale::
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get_center() const {
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return _center;
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}
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////////////////////////////////////////////////////////////////////
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// Function: FltTransformScale::get_scale
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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const LVecBase3f &FltTransformScale::
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get_scale() const {
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return _scale;
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}
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////////////////////////////////////////////////////////////////////
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// Function: FltTransformScale::recompute_matrix
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// Access: Private
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// Description:
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////////////////////////////////////////////////////////////////////
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void FltTransformScale::
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recompute_matrix() {
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_matrix =
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LMatrix4d::translate_mat(-_center) *
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LMatrix4d::scale_mat(LCAST(double, _scale)) *
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LMatrix4d::translate_mat(_center);
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}
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////////////////////////////////////////////////////////////////////
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// Function: FltTransformScale::extract_record
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// Access: Protected, Virtual
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// Description: Fills in the information in this record based on the
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// information given in the indicated datagram, whose
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// opcode has already been read. Returns true on
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// success, false if the datagram is invalid.
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////////////////////////////////////////////////////////////////////
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bool FltTransformScale::
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extract_record(FltRecordReader &reader) {
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if (!FltTransformRecord::extract_record(reader)) {
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return false;
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}
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nassertr(reader.get_opcode() == FO_scale, false);
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DatagramIterator &iterator = reader.get_iterator();
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iterator.skip_bytes(4); // Undocumented additional padding.
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_center[0] = iterator.get_be_float64();
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_center[1] = iterator.get_be_float64();
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_center[2] = iterator.get_be_float64();
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_scale[0] = iterator.get_be_float32();
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_scale[1] = iterator.get_be_float32();
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_scale[2] = iterator.get_be_float32();
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iterator.skip_bytes(4); // Undocumented additional padding.
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recompute_matrix();
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check_remaining_size(iterator);
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return true;
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}
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////////////////////////////////////////////////////////////////////
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// Function: FltTransformScale::build_record
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// Access: Protected, Virtual
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// Description: Fills up the current record on the FltRecordWriter with
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// data for this record, but does not advance the
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// writer. Returns true on success, false if there is
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// some error.
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////////////////////////////////////////////////////////////////////
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bool FltTransformScale::
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build_record(FltRecordWriter &writer) const {
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if (!FltTransformRecord::build_record(writer)) {
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return false;
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}
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writer.set_opcode(FO_scale);
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Datagram &datagram = writer.update_datagram();
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datagram.pad_bytes(4); // Undocumented additional padding.
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datagram.add_be_float64(_center[0]);
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datagram.add_be_float64(_center[1]);
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datagram.add_be_float64(_center[2]);
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datagram.add_be_float32(_scale[0]);
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datagram.add_be_float32(_scale[1]);
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datagram.add_be_float32(_scale[2]);
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datagram.pad_bytes(4); // Undocumented additional padding.
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return true;
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}
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