root/OpenSceneGraph/branches/OpenSceneGraph-2.8/src/osg/CullSettings.cpp @ 10413

Revision 10413, 7.5 kB (checked in by robert, 5 years ago)

From Mathias Froehlich, changes from atof to use osg::asciiToFloat() to avoid locale issues with atof

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1/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
2 *
3 * This library is open source and may be redistributed and/or modified under 
4 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
5 * (at your option) any later version.  The full license is in LICENSE file
6 * included with this distribution, and on the openscenegraph.org website.
7 *
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * OpenSceneGraph Public License for more details.
12*/
13#include <stdlib.h>
14#include <string.h>
15
16#include <osg/CullSettings>
17#include <osg/ArgumentParser>
18#include <osg/ApplicationUsage>
19
20#include <osg/Notify>
21
22using namespace osg;
23
24CullSettings::CullSettings(const CullSettings& cs)
25{
26    setCullSettings(cs);
27}
28
29void CullSettings::setDefaults()
30{
31    _inheritanceMask = ALL_VARIABLES;
32    _inheritanceMaskActionOnAttributeSetting = DISABLE_ASSOCIATED_INHERITANCE_MASK_BIT;
33    _cullingMode = DEFAULT_CULLING;
34    _LODScale = 1.0f;
35    _smallFeatureCullingPixelSize = 2.0f;
36
37    _computeNearFar = COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES;
38    _nearFarRatio = 0.0005f;
39    _impostorActive = true;
40    _depthSortImpostorSprites = false;
41    _impostorPixelErrorThreshold = 4.0f;
42    _numFramesToKeepImpostorSprites = 10;
43    _cullMask = 0xffffffff;
44    _cullMaskLeft = 0xffffffff;
45    _cullMaskRight = 0xffffffff;
46
47    // override during testing
48    //_computeNearFar = COMPUTE_NEAR_FAR_USING_PRIMITIVES;
49    //_nearFarRatio = 0.00005f;
50}
51
52void CullSettings::setCullSettings(const CullSettings& rhs)
53{
54    _inheritanceMask = rhs._inheritanceMask;
55    _inheritanceMaskActionOnAttributeSetting = rhs._inheritanceMaskActionOnAttributeSetting;
56
57    _computeNearFar = rhs._computeNearFar;
58    _cullingMode = rhs._cullingMode;
59    _LODScale = rhs._LODScale;
60    _smallFeatureCullingPixelSize = rhs._smallFeatureCullingPixelSize;
61
62    _clampProjectionMatrixCallback = rhs._clampProjectionMatrixCallback;
63    _nearFarRatio = rhs._nearFarRatio;
64    _impostorActive = rhs._impostorActive;
65    _depthSortImpostorSprites = rhs._depthSortImpostorSprites;
66    _impostorPixelErrorThreshold = rhs._impostorPixelErrorThreshold;
67    _numFramesToKeepImpostorSprites = rhs._numFramesToKeepImpostorSprites;   
68
69    _cullMask = rhs._cullMask;
70    _cullMaskLeft = rhs._cullMaskLeft;
71    _cullMaskRight =  rhs._cullMaskRight;
72}
73
74
75void CullSettings::inheritCullSettings(const CullSettings& settings, unsigned int inheritanceMask)
76{
77    if (inheritanceMask & COMPUTE_NEAR_FAR_MODE) _computeNearFar = settings._computeNearFar;
78    if (inheritanceMask & NEAR_FAR_RATIO) _nearFarRatio = settings._nearFarRatio;
79    if (inheritanceMask & IMPOSTOR_ACTIVE) _impostorActive = settings._impostorActive;
80    if (inheritanceMask & DEPTH_SORT_IMPOSTOR_SPRITES) _depthSortImpostorSprites = settings._depthSortImpostorSprites;
81    if (inheritanceMask & IMPOSTOR_PIXEL_ERROR_THRESHOLD) _impostorPixelErrorThreshold = settings._impostorPixelErrorThreshold;
82    if (inheritanceMask & NUM_FRAMES_TO_KEEP_IMPOSTORS_SPRITES) _numFramesToKeepImpostorSprites = settings._numFramesToKeepImpostorSprites;
83    if (inheritanceMask & CULL_MASK) _cullMask = settings._cullMask;
84    if (inheritanceMask & CULL_MASK_LEFT) _cullMaskLeft = settings._cullMaskLeft;
85    if (inheritanceMask & CULL_MASK_RIGHT) _cullMaskRight = settings._cullMaskRight;
86    if (inheritanceMask & CULLING_MODE) _cullingMode = settings._cullingMode;
87    if (inheritanceMask & LOD_SCALE) _LODScale = settings._LODScale;
88    if (inheritanceMask & SMALL_FEATURE_CULLING_PIXEL_SIZE) _smallFeatureCullingPixelSize = settings._smallFeatureCullingPixelSize;
89    if (inheritanceMask & CLAMP_PROJECTION_MATRIX_CALLBACK) _clampProjectionMatrixCallback = settings._clampProjectionMatrixCallback;
90}
91
92
93static ApplicationUsageProxy ApplicationUsageProxyCullSettings_e0(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_COMPUTE_NEAR_FAR_MODE <mode>","DO_NOT_COMPUTE_NEAR_FAR | COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES | COMPUTE_NEAR_FAR_USING_PRIMITIVES");
94static ApplicationUsageProxy ApplicationUsageProxyCullSettings_e1(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_NEAR_FAR_RATIO <float>","Set the ratio between near and far planes - must greater than 0.0 but less than 1.0.");
95
96void CullSettings::readEnvironmentalVariables()
97{
98    osg::notify(osg::INFO)<<"CullSettings::readEnvironmentalVariables()"<<std::endl;
99
100    char *ptr;
101   
102    if ((ptr = getenv("OSG_COMPUTE_NEAR_FAR_MODE")) != 0)
103    {
104        if (strcmp(ptr,"DO_NOT_COMPUTE_NEAR_FAR")==0) _computeNearFar = DO_NOT_COMPUTE_NEAR_FAR;
105        else if (strcmp(ptr,"COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES")==0) _computeNearFar = COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES;
106        else if (strcmp(ptr,"COMPUTE_NEAR_FAR_USING_PRIMITIVES")==0) _computeNearFar = COMPUTE_NEAR_FAR_USING_PRIMITIVES;
107
108        osg::notify(osg::INFO)<<"Set compute near far mode to "<<_computeNearFar<<std::endl;
109       
110    }
111   
112    if ((ptr = getenv("OSG_NEAR_FAR_RATIO")) != 0)
113    {
114        _nearFarRatio = osg::asciiToDouble(ptr);
115
116        osg::notify(osg::INFO)<<"Set near/far ratio to "<<_nearFarRatio<<std::endl;
117    }
118   
119}
120
121void CullSettings::readCommandLine(ArgumentParser& arguments)
122{
123    // report the usage options.
124    if (arguments.getApplicationUsage())
125    {
126        arguments.getApplicationUsage()->addCommandLineOption("--COMPUTE_NEAR_FAR_MODE <mode>","DO_NOT_COMPUTE_NEAR_FAR | COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES | COMPUTE_NEAR_FAR_USING_PRIMITIVES");
127        arguments.getApplicationUsage()->addCommandLineOption("--NEAR_FAR_RATIO <float>","Set the ratio between near and far planes - must greater than 0.0 but less than 1.0.");
128    }
129
130    std::string str;
131    while(arguments.read("--COMPUTE_NEAR_FAR_MODE",str))
132    {
133        if (str=="DO_NOT_COMPUTE_NEAR_FAR") _computeNearFar = DO_NOT_COMPUTE_NEAR_FAR;
134        else if (str=="COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES") _computeNearFar = COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES;
135        else if (str=="COMPUTE_NEAR_FAR_USING_PRIMITIVES") _computeNearFar = COMPUTE_NEAR_FAR_USING_PRIMITIVES;
136
137        osg::notify(osg::INFO)<<"Set compute near far mode to "<<_computeNearFar<<std::endl;
138    }
139
140    double value;
141    while(arguments.read("--NEAR_FAR_RATIO",value))
142    {
143        _nearFarRatio = value;
144
145        osg::notify(osg::INFO)<<"Set near/far ratio to "<<_nearFarRatio<<std::endl;
146    }
147
148}
149
150void CullSettings::write(std::ostream& out)
151{
152    out<<"CullSettings: "<<this<<" {"<<std::endl;
153   
154    out<<"    _inheritanceMask = "<<_inheritanceMask<<std::endl;
155    out<<"    _inheritanceMaskActionOnAttributeSetting = "<<_inheritanceMaskActionOnAttributeSetting<<std::endl;
156    out<<"    _computeNearFar = "<<_computeNearFar<<std::endl;
157    out<<"    _cullingMode = "<<_cullingMode<<std::endl;
158    out<<"    _LODScale = "<<_LODScale<<std::endl;
159    out<<"    _smallFeatureCullingPixelSize = "<<_smallFeatureCullingPixelSize<<std::endl;
160    out<<"    _clampProjectionMatrixCallback = "<<_clampProjectionMatrixCallback.get()<<std::endl;
161    out<<"    _nearFarRatio = "<<_nearFarRatio<<std::endl;
162    out<<"    _impostorActive = "<<_impostorActive<<std::endl;
163    out<<"    _depthSortImpostorSprites = "<<_depthSortImpostorSprites<<std::endl;
164    out<<"    _impostorPixelErrorThreshold = "<<_impostorPixelErrorThreshold<<std::endl;
165    out<<"    _numFramesToKeepImpostorSprites = "<<_numFramesToKeepImpostorSprites<<std::endl;
166    out<<"    _cullMask = "<<_cullMask<<std::endl;
167    out<<"    _cullMaskLeft = "<<_cullMaskLeft<<std::endl;
168    out<<"    _cullMaskRight = "<<_cullMaskRight<<std::endl;
169   
170    out<<"{"<<std::endl;
171}
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