*/
#include "precipitation.hxx"
-#include "visual_enviro.hxx"
+//#include "visual_enviro.hxx"
#include <simgear/constants.h>
#include <osg/ClipNode>
+#include <simgear/scene/util/RenderConstants.hxx>
/**
* @brief SGPrecipitation constructor
* Build a new OSG object from osgParticle.
*/
SGPrecipitation::SGPrecipitation() :
- _freeze(false), _snow_intensity(0.0), _rain_intensity(0.0), _clip_distance(5.0)
+ _freeze(false), _enabled(true), _droplet_external(false), _snow_intensity(0.0), _rain_intensity(0.0), _clip_distance(5.0), _rain_droplet_size(0.0), _snow_flake_size(0.0), _illumination(1.0)
{
_precipitationEffect = new osgParticle::PrecipitationEffect;
}
+void SGPrecipitation::setEnabled( bool value )
+{
+ _enabled = value;
+}
+
+void SGPrecipitation::setDropletExternal( bool value )
+{
+ _droplet_external = value;
+}
+
+bool SGPrecipitation::getEnabled() const
+{
+ return _enabled;
+}
/**
* @brief Build and add the object "precipitationEffect"
_precipitationEffect->rain(0);
if (_clip_distance!=0.0)
- {
+ {
osg::ref_ptr<osg::ClipNode> clipNode = new osg::ClipNode;
clipNode->addClipPlane( new osg::ClipPlane( 0 ) );
clipNode->getClipPlane(0)->setClipPlane( 0.0, 0.0, -1.0, -_clip_distance );
group->addChild(_precipitationEffect.get());
}
+ group->setNodeMask( ~(simgear::CASTSHADOW_BIT | simgear::MODELLIGHT_BIT) );
+
return group;
}
this->_rain_intensity = intensity;
}
+/**
+ * @brief Define the rain droplet size
+ *
+ * This function permits you to define and change the rain droplet size
+ * which is used if external droplet size control is enabled
+ */
+
+void SGPrecipitation::setRainDropletSize(float size)
+{
+ _rain_droplet_size = size;
+}
+
-/**
+/**
+ * @brief Define the illumination multiplier
+ *
+ * This function permits you to define and change the rain droplet size
+ * which is used if external droplet size control is enabled
+ */
+
+void SGPrecipitation::setIllumination(float illumination)
+{
+ _illumination = illumination;
+}
+
+/**
+ * @brief Define the snow flake size
+ *
+ * This function permits you to define and change the snow flake size
+ * which is used if external droplet size control is enabled
+ */
+
+void SGPrecipitation::setSnowFlakeSize(float size)
+{
+ _snow_flake_size = size;
+}
+
+
+/**
+ * @brief Define the rain droplet size
+ *
+ * This function permits you to define and change the rain droplet size
+ * which is used if external droplet size control is enabled
+ */
+
+void SGPrecipitation::setClipDistance(float distance)
+{
+ _clip_distance = distance;
+}
+
+/**
* @brief Freeze the rain to snow
- *
- * @param freeze Boolean
- *
+ *
+ * @param freeze Boolean
+ *
* This function permits you to turn off the rain to snow.
*/
void SGPrecipitation::setFreezing(bool freeze)
{
+ if ((this->_freeze)&&(!freeze)) // rain freezes suddenly, so we need to unfreeze
+ {
+ this->_rain_intensity = this->_snow_intensity;
+ this->_snow_intensity = 0.0;
+ }
this->_freeze = freeze;
+
}
* @brief Define the wind direction and speed
*
* This function permits you to define and change the wind direction
- *
+ *
* After apply the MatrixTransform to the osg::Precipitation object,
* x points full south... From wind heading and speed, we can calculate
* the wind vector.
bool SGPrecipitation::update(void)
{
if (this->_freeze) {
- if (this->_rain_intensity > 0)
- this->_snow_intensity = this->_rain_intensity;
+ if (this->_rain_intensity > 0) {
+ this->_snow_intensity = this->_rain_intensity;
+ }
}
- bool enabled = sgEnviro.get_precipitation_enable_state();
- if (enabled && this->_snow_intensity > 0) {
+ if (_enabled && this->_snow_intensity > 0) {
_precipitationEffect->setWind(_wind_vec);
- _precipitationEffect->setParticleSpeed( -0.75f - 0.25f*_snow_intensity);
+
- _precipitationEffect->setParticleSize(0.02f + 0.03f*_snow_intensity);
- _precipitationEffect->setMaximumParticleDensity(_snow_intensity * 7.2f);
+ if(_droplet_external)
+ {
+
+ if ((_freeze) && (_rain_droplet_size > 0.03)) // this is hail or sleet
+ {
+ _precipitationEffect->setParticleSize(_rain_droplet_size*1.5f);
+ _precipitationEffect->setParticleSpeed( -1.0f - 22.36f*sqrtf(_rain_droplet_size));
+ _precipitationEffect->setMaximumParticleDensity(_snow_intensity * 4.8f);
+ }
+ else if (_freeze) // this is snow from frozen small rain droplets
+ {
+ _precipitationEffect->setParticleSize(_rain_droplet_size*1.3f);
+ _precipitationEffect->setParticleSpeed( -0.75f - 0.25f*_snow_intensity);
+ _precipitationEffect->setMaximumParticleDensity(_snow_intensity * 10.0f);
+ }
+ else // this was snow in the first place
+ {
+ _precipitationEffect->setParticleSize(_snow_flake_size);
+ _precipitationEffect->setParticleSpeed( -0.75f - 0.25f*_snow_intensity);
+ _precipitationEffect->setMaximumParticleDensity(_snow_intensity * 7.2f);
+ }
+ }
+ else
+ {
+ _precipitationEffect->setMaximumParticleDensity(_snow_intensity * 7.2f);
+ _precipitationEffect->setParticleSize(0.02f + 0.03f*_snow_intensity);
+ _precipitationEffect->setParticleSpeed( -0.75f - 0.25f*_snow_intensity);
+ }
+
+
_precipitationEffect->setCellSize(osg::Vec3(5.0f / (0.25f+_snow_intensity), 5.0f / (0.25f+_snow_intensity), 5.0f));
_precipitationEffect->setNearTransition(25.f);
_precipitationEffect->setFarTransition(100.0f - 60.0f*sqrtf(_snow_intensity));
- _precipitationEffect->setParticleColor(osg::Vec4(0.85, 0.85, 0.85, 1.0) - osg::Vec4(0.1, 0.1, 0.1, 1.0) * _snow_intensity);
- } else if (enabled && this->_rain_intensity > 0) {
+ _precipitationEffect->setParticleColor(osg::Vec4(0.85 * _illumination, 0.85 * _illumination, 0.85 * _illumination, 1.0) - osg::Vec4(0.1, 0.1, 0.1, 1.0) * _snow_intensity);
+ } else if (_enabled && this->_rain_intensity > 0) {
+
_precipitationEffect->setWind(_wind_vec);
- _precipitationEffect->setParticleSpeed( -2.0f + -5.0f*_rain_intensity);
+
+
+ if(_droplet_external)
+ {
+ _precipitationEffect->setParticleSize(_rain_droplet_size);
+ _precipitationEffect->setParticleSpeed( -1.0f - 22.36f*sqrtf(_rain_droplet_size));
+ }
+ else
+ {
+ _precipitationEffect->setParticleSize(0.01 + 0.02*_rain_intensity);
+ _precipitationEffect->setParticleSpeed( -2.0f + -5.0f*_rain_intensity);
+ }
- _precipitationEffect->setParticleSize(0.01 + 0.02*_rain_intensity);
_precipitationEffect->setMaximumParticleDensity(_rain_intensity * 7.5f);
_precipitationEffect->setCellSize(osg::Vec3(5.0f / (0.25f+_rain_intensity), 5.0f / (0.25f+_rain_intensity), 5.0f));
_precipitationEffect->setNearTransition(25.f);
_precipitationEffect->setFarTransition(100.0f - 60.0f*sqrtf(_rain_intensity));
- _precipitationEffect->setParticleColor( osg::Vec4(0x7A, 0xCE, 0xFF, 0x80));
+ _precipitationEffect->setParticleColor( osg::Vec4(0.64 * _illumination, 0.64 * _illumination, 0.64 * _illumination, 0.5));
} else {
_precipitationEffect->snow(0);
_precipitationEffect->rain(0);
projects / simgear.git / blobdiff