source: nanovis/trunk/Volume.cpp @ 4822

Last change on this file since 4822 was 3935, checked in by ldelgass, 6 years ago

First pass at loading VTK vector data for flows in nanovis

  • Property svn:eol-style set to native
File size: 2.9 KB
Line 
1/* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2/*
3 * ----------------------------------------------------------------------
4 * Volume.cpp: 3d volume class
5 *
6 * ======================================================================
7 *  AUTHOR:  Wei Qiao <qiaow@purdue.edu>
8 *           Purdue Rendering and Perceptualization Lab (PURPL)
9 *
10 *  Copyright (c) 2004-2013  HUBzero Foundation, LLC
11 *
12 *  See the file "license.terms" for information on usage and
13 *  redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
14 * ======================================================================
15 */
16#include <memory.h>
17#include <assert.h>
18#include <float.h>
19
20#include <vrmath/Vector4f.h>
21#include <vrmath/Matrix4x4d.h>
22
23#include "Volume.h"
24#include "Trace.h"
25
26using namespace nv;
27using namespace vrmath;
28
29bool Volume::updatePending = false;
30double Volume::valueMin = 0.0;
31double Volume::valueMax = 1.0;
32
33Volume::Volume(int width, int height, int depth,
34               int numComponents, float *data,
35               double vmin, double vmax, double nonZeroMin) :
36    _id(0),
37    _width(width),
38    _height(height),
39    _depth(depth),
40    _transferFunc(NULL),
41    _ambient(0.6f),
42    _diffuse(0.4f),
43    _specular(0.3f),
44    _specularExp(90.0f),
45    _lightTwoSide(false),
46    _opacityScale(0.5f),
47    _data(NULL),
48    _numComponents(numComponents),
49    _nonZeroMin(nonZeroMin),
50    _cutplanesVisible(true),
51    _tex(NULL),
52    _position(0,0,0),
53    _scale(1,1,1),
54    _numSlices(512),
55    _enabled(true),
56    _dataEnabled(true),
57    _outlineEnabled(true),
58    _volumeType(CUBIC),
59    _isosurface(0)
60{
61    TRACE("Enter: %dx%dx%d", _width, _height, _depth);
62
63    _outlineColor[0] = _outlineColor[1] = _outlineColor[2] = 1.0f;
64
65    _tex = new Texture3D(_width, _height, _depth, GL_FLOAT, GL_LINEAR, _numComponents);
66    int fcount = _width * _height * _depth * _numComponents;
67    _data = new float[fcount];
68    memcpy(_data, data, fcount * sizeof(float));
69    _tex->initialize(_data);
70
71    _id = _tex->id();
72
73    wAxis.setRange(vmin, vmax);
74
75    //Add cut planes. We create 3 default cut planes facing x, y, z directions.
76    //The default location of cut plane is in the middle of the data.
77    _plane.clear();
78    addCutplane(CutPlane::X_AXIS, 0.5f);
79    addCutplane(CutPlane::Y_AXIS, 0.5f);
80    addCutplane(CutPlane::Z_AXIS, 0.5f);
81
82    TRACE("Leave");
83}
84
85Volume::~Volume()
86{
87    TRACE("Enter");
88
89    delete [] _data;
90    delete _tex;
91}
92
93void Volume::setData(float *data, double vmin, double vmax, double nonZeroMin)
94{
95    int fcount = _width * _height * _depth * _numComponents;
96    memcpy(_data, data, fcount * sizeof(float));
97    _tex->update(_data);
98    wAxis.setRange(vmin, vmax);
99    _nonZeroMin = nonZeroMin;
100    updatePending = true;
101}
102
103void Volume::getBounds(Vector3f& bboxMin, Vector3f& bboxMax) const
104{
105    bboxMin.set(xAxis.min(), yAxis.min(), zAxis.min());
106    bboxMax.set(xAxis.max(), yAxis.max(), zAxis.max());
107}
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