142 lines
4.7 KiB
C++
142 lines
4.7 KiB
C++
// Filename: fltTransformTranslate.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) 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 "fltTransformTranslate.h"
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#include "fltRecordReader.h"
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#include "fltRecordWriter.h"
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TypeHandle FltTransformTranslate::_type_handle;
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////////////////////////////////////////////////////////////////////
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// Function: FltTransformTranslate::Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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FltTransformTranslate::
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FltTransformTranslate(FltHeader *header) : FltTransformRecord(header) {
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_from.set(0.0, 0.0, 0.0);
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_delta.set(0.0, 0.0, 0.0);
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}
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////////////////////////////////////////////////////////////////////
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// Function: FltTransformTranslate::set
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// Access: Public
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// Description: Defines the translation. The "from" point seems to
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// be pretty much ignored.
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////////////////////////////////////////////////////////////////////
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void FltTransformTranslate::
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set(const LPoint3d &from, const LVector3d &delta) {
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_from = from;
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_delta = delta;
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recompute_matrix();
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}
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////////////////////////////////////////////////////////////////////
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// Function: FltTransformTranslate::get_from
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// Access: Public
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// Description: Returns the reference point of the translation. This
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// is largely meaningless.
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////////////////////////////////////////////////////////////////////
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const LPoint3d &FltTransformTranslate::
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get_from() const {
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return _from;
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}
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////////////////////////////////////////////////////////////////////
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// Function: FltTransformTranslate::get_delta
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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const LVector3d &FltTransformTranslate::
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get_delta() const {
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return _delta;
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}
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////////////////////////////////////////////////////////////////////
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// Function: FltTransformTranslate::recompute_matrix
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// Access: Private
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// Description:
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////////////////////////////////////////////////////////////////////
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void FltTransformTranslate::
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recompute_matrix() {
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_matrix = LMatrix4d::translate_mat(_delta);
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}
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////////////////////////////////////////////////////////////////////
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// Function: FltTransformTranslate::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 FltTransformTranslate::
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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_translate, 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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_from[0] = iterator.get_be_float64();
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_from[1] = iterator.get_be_float64();
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_from[2] = iterator.get_be_float64();
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_delta[0] = iterator.get_be_float64();
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_delta[1] = iterator.get_be_float64();
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_delta[2] = iterator.get_be_float64();
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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: FltTransformTranslate::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 FltTransformTranslate::
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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_translate);
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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(_from[0]);
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datagram.add_be_float64(_from[1]);
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datagram.add_be_float64(_from[2]);
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datagram.add_be_float64(_delta[0]);
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datagram.add_be_float64(_delta[1]);
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datagram.add_be_float64(_delta[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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