[21] | 1 | /** |
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| 2 | * This source file is part of OgreColladaPlugin |
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| 3 | * an addon for OGRE (Object-oriented Graphics Rendering Engine) |
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| 4 | * For the latest info, see http://www.ogre3d.org/ |
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| 5 | * |
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| 6 | * This program is free software; you can redistribute it and/or modify it under |
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| 7 | * the terms of the GNU Lesser General Public License as published by the Free Software |
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| 8 | * Foundation; either version 2 of the License, or (at your option) any later |
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| 9 | * version. |
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| 10 | |
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| 11 | * This program is distributed in the hope that it will be useful, but WITHOUT |
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| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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| 13 | * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. |
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| 14 | |
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| 15 | * You should have received a copy of the GNU Lesser General Public License along with |
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| 16 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
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| 17 | * Place - Suite 330, Boston, MA 02111-1307, USA, or go to |
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| 18 | * http://www.gnu.org/copyleft/lesser.txt. |
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| 19 | * |
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| 20 | * @author Philipp Hartl |
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| 21 | * @see README |
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| 22 | */ |
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| 23 | |
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| 24 | #include "OgreColladaLight.h" |
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| 25 | #include "OgreColladaDocument.h" |
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| 26 | #include "OgreColladaScene.h" |
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| 27 | #include "OgreColladaSyntax.h" |
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| 28 | #include "OgreColladaUtils.h" |
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| 29 | |
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| 30 | #include "OgreSceneManager.h" |
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| 31 | #include "OgreStringConverter.h" |
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| 32 | |
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| 33 | namespace Ogre |
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| 34 | { |
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| 35 | //------------------------------------------------------------------------- |
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| 36 | ColladaLight::ColladaLight(ColladaDocument *d, xmlNode *n) : ColladaEntity(d, n) { } |
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| 37 | |
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| 38 | //------------------------------------------------------------------------- |
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| 39 | ColladaLight::~ColladaLight(void) { } |
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| 40 | |
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| 41 | //------------------------------------------------------------------------- |
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| 42 | MovableObject *ColladaLight::getOgreInstance(void) const |
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| 43 | { |
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| 44 | if (mType == ColladaLightSpecific::AMBIENT) |
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| 45 | { |
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| 46 | mDoc->getSceneManager()->setAmbientLight(mColour); |
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| 47 | return NULL; |
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| 48 | } |
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| 49 | |
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| 50 | // Light *light = new Light(mId); |
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| 51 | Light *light = mDoc->getSceneManager()->createLight(mId); |
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| 52 | |
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| 53 | light->setDiffuseColour(mColour); |
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| 54 | light->setSpecularColour(mColour); |
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| 55 | light->setDirection(Vector3(0, 0, -1)); // see collada spec |
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| 56 | |
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| 57 | if (mType == ColladaLightSpecific::DIRECTIONAL) light->setType(Light::LT_DIRECTIONAL); |
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| 58 | else if (mType == ColladaLightSpecific::POINT) light->setType(Light::LT_POINT); |
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| 59 | else if (mType == ColladaLightSpecific::SPOT) light->setType(Light::LT_SPOTLIGHT); |
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| 60 | |
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| 61 | if (mType == ColladaLightSpecific::POINT || mType == ColladaLightSpecific::SPOT) |
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| 62 | { |
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| 63 | float constant = (mAttenuation == ColladaLightSpecific::CONSTANT) ? mAttenuationScale : 0; |
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| 64 | float linear = (mAttenuation == ColladaLightSpecific::LINEAR) ? mAttenuationScale : 0; |
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| 65 | float quadratic = (mAttenuation == ColladaLightSpecific::QUADRATIC) ? mAttenuationScale : 0; |
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| 66 | |
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| 67 | float range = 100000; |
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| 68 | ColladaBoundingBox *scenebox = mDoc->getScene()->getBoundingBox(); |
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| 69 | if (scenebox != NULL) range = scenebox->getRadius() * 2; |
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| 70 | |
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| 71 | light->setAttenuation(range, constant, linear, quadratic); |
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| 72 | } |
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| 73 | |
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| 74 | if (mType == ColladaLightSpecific::SPOT) |
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| 75 | { |
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| 76 | light->setSpotlightRange(Radian(0), Radian(Math::DegreesToRadians(mAngle)), mFalloffScale); |
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| 77 | } |
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| 78 | |
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| 79 | return light; |
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| 80 | } |
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| 81 | |
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| 82 | //------------------------------------------------------------------------- |
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| 83 | bool ColladaLight::doImport(void) |
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| 84 | { |
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| 85 | if (mLoaded) return mStatus; |
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| 86 | else mLoaded = true; |
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| 87 | |
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| 88 | // get light type |
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| 89 | String lighttype = ColladaUtils::getProperty(mNode, CS_ATR_TYPE); |
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| 90 | mType = ColladaLightSpecific::getType(lighttype); |
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| 91 | if (mType == ColladaLightSpecific::UNKNOWN) |
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| 92 | { |
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| 93 | LogManager::getSingleton().logMessage("ColladaLight::doImport - light type " + lighttype + " unknown! " + mId); |
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| 94 | return false; |
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| 95 | } |
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| 96 | |
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| 97 | // <asset> child |
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| 98 | // xmlNode *asset = ColladaUtils::getChildByTagName(mNode, CS_ELM_ASSET); |
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| 99 | |
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| 100 | // <param> childs, describes the values that the light contributes |
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| 101 | xmlNodePtrVector params = ColladaUtils::getChildsByTagName(mNode, CS_ELM_PARAM); |
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| 102 | for (xmlNodePtrVector::iterator it = params.begin(); it != params.end(); ++it) |
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| 103 | { |
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| 104 | String name = ColladaUtils::getProperty(*it, CS_ATR_NAME); |
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| 105 | String content = ColladaUtils::getContentDirect(*it); |
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| 106 | |
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| 107 | /** |
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| 108 | * if the type attribute value is DIRECTIONAL or SPOT |
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| 109 | * then the light's default direction vector in local |
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| 110 | * coordinates is [0,0,-1], pointing down the -Z axis |
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| 111 | */ |
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| 112 | |
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| 113 | // should be in every case |
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| 114 | if (name == CS_VAL_LIGHT_PARAM_COLOR) |
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| 115 | { |
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| 116 | mColour = StringConverter::parseColourValue(content); |
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| 117 | } |
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| 118 | // point or spot |
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| 119 | else if (name == CS_VAL_LIGHT_PARAM_ATTENUATION) |
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| 120 | { |
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| 121 | mAttenuation = ColladaLightSpecific::getFunction(content); |
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| 122 | } |
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| 123 | else if (name == CS_VAL_LIGHT_PARAM_ATTENUATION_SCALE) |
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| 124 | { |
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| 125 | mAttenuationScale = StringConverter::parseReal(content); |
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| 126 | } |
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| 127 | // especially for spot light |
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| 128 | else if (name == CS_VAL_LIGHT_PARAM_ANGLE) |
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| 129 | { |
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| 130 | mAngle = StringConverter::parseReal(content); |
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| 131 | } |
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| 132 | else if (name == CS_VAL_LIGHT_PARAM_FALLOFF) |
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| 133 | { |
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| 134 | mFalloff = ColladaLightSpecific::getFunction(content); |
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| 135 | } |
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| 136 | else if (name == CS_VAL_LIGHT_PARAM_FALLOFF_SCALE) |
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| 137 | { |
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| 138 | mFalloffScale = StringConverter::parseReal(content); |
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| 139 | } |
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| 140 | else |
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| 141 | { |
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| 142 | LogManager::getSingleton().logMessage("ColladaLight::doImport - unknown attribute of light param " + name + "! " + mId); |
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| 143 | } |
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| 144 | } |
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| 145 | |
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| 146 | mStatus = true; |
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| 147 | return mStatus; |
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| 148 | } |
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| 149 | |
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| 150 | //------------------------------------------------------------------------- |
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| 151 | namespace ColladaLightSpecific |
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| 152 | { |
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| 153 | Type getType(const String &s) |
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| 154 | { |
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| 155 | if (s == CS_VAL_LIGHT_TYPE_AMBIENT) return AMBIENT; |
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| 156 | else if (s == CS_VAL_LIGHT_TYPE_DIRECTIONAL) return DIRECTIONAL; |
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| 157 | else if (s == CS_VAL_LIGHT_TYPE_POINT) return POINT; |
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| 158 | else if (s == CS_VAL_LIGHT_TYPE_SPOT) return SPOT; |
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| 159 | else return UNKNOWN; |
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| 160 | } |
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| 161 | |
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| 162 | Function getFunction(const String &s) |
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| 163 | { |
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| 164 | if (s == CS_VAL_LIGHT_FUNCTION_CONSTANT) return CONSTANT; |
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| 165 | else if (s == CS_VAL_LIGHT_FUNCTION_LINEAR) return LINEAR; |
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| 166 | else if (s == CS_VAL_LIGHT_FUNCTION_QUADRATIC) return QUADRATIC; |
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| 167 | else return CONSTANT; |
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| 168 | } |
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| 169 | } |
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| 170 | } |
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