Add particle properties ready to use for emitting from a spheroid

This commit is contained in:
David Rowe 2015-09-16 18:07:18 -07:00
parent d51cab3e3d
commit c992107363
5 changed files with 136 additions and 4 deletions

View file

@ -94,6 +94,12 @@ CONSTRUCT_PROPERTY(emitRate, ParticleEffectEntityItem::DEFAULT_EMIT_RATE),
CONSTRUCT_PROPERTY(emitSpeed, ParticleEffectEntityItem::DEFAULT_EMIT_SPEED),
CONSTRUCT_PROPERTY(speedSpread, ParticleEffectEntityItem::DEFAULT_SPEED_SPREAD),
CONSTRUCT_PROPERTY(emitOrientation, ParticleEffectEntityItem::DEFAULT_EMIT_ORIENTATION),
CONSTRUCT_PROPERTY(emitRadius, ParticleEffectEntityItem::DEFAULT_EMIT_RADIUS),
CONSTRUCT_PROPERTY(emitRadiusStart, ParticleEffectEntityItem::DEFAULT_EMIT_RADIUS_START),
CONSTRUCT_PROPERTY(polarStart, ParticleEffectEntityItem::DEFAULT_POLAR_START),
CONSTRUCT_PROPERTY(polarFinish, ParticleEffectEntityItem::DEFAULT_POLAR_FINISH),
CONSTRUCT_PROPERTY(azimuthStart, ParticleEffectEntityItem::DEFAULT_AZIMUTH_START),
CONSTRUCT_PROPERTY(azimuthFinish, ParticleEffectEntityItem::DEFAULT_AZIMUTH_FINISH),
CONSTRUCT_PROPERTY(emitAcceleration, ParticleEffectEntityItem::DEFAULT_EMIT_ACCELERATION),
CONSTRUCT_PROPERTY(accelerationSpread, ParticleEffectEntityItem::DEFAULT_ACCELERATION_SPREAD),
CONSTRUCT_PROPERTY(particleRadius, ParticleEffectEntityItem::DEFAULT_PARTICLE_RADIUS),
@ -378,6 +384,12 @@ EntityPropertyFlags EntityItemProperties::getChangedProperties() const {
CHECK_PROPERTY_CHANGE(PROP_EMIT_SPEED, emitSpeed);
CHECK_PROPERTY_CHANGE(PROP_SPEED_SPREAD, speedSpread);
CHECK_PROPERTY_CHANGE(PROP_EMIT_ORIENTATION, emitOrientation);
CHECK_PROPERTY_CHANGE(PROP_EMIT_RADIUS, emitRadius);
CHECK_PROPERTY_CHANGE(PROP_EMIT_RADIUS_START, emitRadiusStart);
CHECK_PROPERTY_CHANGE(PROP_POLAR_START, polarStart);
CHECK_PROPERTY_CHANGE(PROP_POLAR_FINISH, polarFinish);
CHECK_PROPERTY_CHANGE(PROP_AZIMUTH_START, azimuthStart);
CHECK_PROPERTY_CHANGE(PROP_AZIMUTH_FINISH, azimuthFinish);
CHECK_PROPERTY_CHANGE(PROP_EMIT_ACCELERATION, emitAcceleration);
CHECK_PROPERTY_CHANGE(PROP_ACCELERATION_SPREAD, accelerationSpread);
CHECK_PROPERTY_CHANGE(PROP_PARTICLE_RADIUS, particleRadius);
@ -498,6 +510,12 @@ QScriptValue EntityItemProperties::copyToScriptValue(QScriptEngine* engine, bool
COPY_PROPERTY_TO_QSCRIPTVALUE(emitSpeed);
COPY_PROPERTY_TO_QSCRIPTVALUE(speedSpread);
COPY_PROPERTY_TO_QSCRIPTVALUE(emitOrientation);
COPY_PROPERTY_TO_QSCRIPTVALUE(emitRadius);
COPY_PROPERTY_TO_QSCRIPTVALUE(emitRadiusStart);
COPY_PROPERTY_TO_QSCRIPTVALUE(polarStart);
COPY_PROPERTY_TO_QSCRIPTVALUE(polarFinish);
COPY_PROPERTY_TO_QSCRIPTVALUE(azimuthStart);
COPY_PROPERTY_TO_QSCRIPTVALUE(azimuthFinish);
COPY_PROPERTY_TO_QSCRIPTVALUE(emitAcceleration);
COPY_PROPERTY_TO_QSCRIPTVALUE(accelerationSpread);
COPY_PROPERTY_TO_QSCRIPTVALUE(particleRadius);
@ -638,6 +656,12 @@ void EntityItemProperties::copyFromScriptValue(const QScriptValue& object, bool
COPY_PROPERTY_FROM_QSCRIPTVALUE(emitSpeed, float, setEmitSpeed);
COPY_PROPERTY_FROM_QSCRIPTVALUE(speedSpread, float, setSpeedSpread);
COPY_PROPERTY_FROM_QSCRIPTVALUE(emitOrientation, glmQuat, setEmitOrientation);
COPY_PROPERTY_FROM_QSCRIPTVALUE(emitRadius, glmVec3, setEmitRadius);
COPY_PROPERTY_FROM_QSCRIPTVALUE(emitRadiusStart, float, setEmitRadiusStart);
COPY_PROPERTY_FROM_QSCRIPTVALUE(polarStart, float, setPolarStart);
COPY_PROPERTY_FROM_QSCRIPTVALUE(polarFinish, float, setPolarFinish);
COPY_PROPERTY_FROM_QSCRIPTVALUE(azimuthStart, float, setAzimuthStart);
COPY_PROPERTY_FROM_QSCRIPTVALUE(azimuthFinish, float, setAzimuthFinish);
COPY_PROPERTY_FROM_QSCRIPTVALUE(emitAcceleration, glmVec3, setEmitAcceleration);
COPY_PROPERTY_FROM_QSCRIPTVALUE(accelerationSpread, glmVec3, setAccelerationSpread);
COPY_PROPERTY_FROM_QSCRIPTVALUE(particleRadius, float, setParticleRadius);
@ -892,6 +916,12 @@ bool EntityItemProperties::encodeEntityEditPacket(PacketType command, EntityItem
APPEND_ENTITY_PROPERTY(PROP_EMIT_SPEED, properties.getEmitSpeed());
APPEND_ENTITY_PROPERTY(PROP_SPEED_SPREAD, properties.getSpeedSpread());
APPEND_ENTITY_PROPERTY(PROP_EMIT_ORIENTATION, properties.getEmitOrientation());
APPEND_ENTITY_PROPERTY(PROP_EMIT_RADIUS, properties.getEmitRadius());
APPEND_ENTITY_PROPERTY(PROP_EMIT_RADIUS_START, properties.getEmitRadiusStart());
APPEND_ENTITY_PROPERTY(PROP_POLAR_START, properties.getPolarStart());
APPEND_ENTITY_PROPERTY(PROP_POLAR_FINISH, properties.getPolarFinish());
APPEND_ENTITY_PROPERTY(PROP_AZIMUTH_START, properties.getAzimuthStart());
APPEND_ENTITY_PROPERTY(PROP_AZIMUTH_FINISH, properties.getAzimuthFinish());
APPEND_ENTITY_PROPERTY(PROP_EMIT_ACCELERATION, properties.getEmitAcceleration());
APPEND_ENTITY_PROPERTY(PROP_ACCELERATION_SPREAD, properties.getAccelerationSpread());
APPEND_ENTITY_PROPERTY(PROP_PARTICLE_RADIUS, properties.getParticleRadius());
@ -1177,6 +1207,12 @@ bool EntityItemProperties::decodeEntityEditPacket(const unsigned char* data, int
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_EMIT_SPEED, float, setEmitSpeed);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_SPEED_SPREAD, float, setSpeedSpread);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_EMIT_ORIENTATION, glm::quat, setEmitOrientation);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_EMIT_RADIUS, glm::vec3, setEmitRadius);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_EMIT_RADIUS_START, float, setEmitRadiusStart);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_POLAR_START, float, setPolarStart);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_POLAR_FINISH, float, setPolarFinish);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_AZIMUTH_START, float, setAzimuthStart);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_AZIMUTH_FINISH, float, setAzimuthFinish);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_EMIT_ACCELERATION, glm::vec3, setEmitAcceleration);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_ACCELERATION_SPREAD, glm::vec3, setAccelerationSpread);
READ_ENTITY_PROPERTY_TO_PROPERTIES(PROP_PARTICLE_RADIUS, float, setParticleRadius);
@ -1327,6 +1363,12 @@ void EntityItemProperties::markAllChanged() {
_emitSpeedChanged = true;
_speedSpreadChanged = true;
_emitOrientationChanged = true;
_emitRadiusChanged = true;
_emitRadiusStartChanged = true;
_polarStartChanged = true;
_polarFinishChanged = true;
_azimuthStartChanged = true;
_azimuthFinishChanged = true;
_emitAccelerationChanged = true;
_accelerationSpreadChanged = true;
_particleRadiusChanged = true;

View file

@ -141,8 +141,14 @@ public:
DEFINE_PROPERTY(PROP_EMIT_SPEED, EmitSpeed, emitSpeed, float);
DEFINE_PROPERTY(PROP_SPEED_SPREAD, SpeedSpread, speedSpread, float);
DEFINE_PROPERTY_REF(PROP_EMIT_ORIENTATION, EmitOrientation, emitOrientation, glm::quat);
DEFINE_PROPERTY(PROP_EMIT_ACCELERATION, EmitAcceleration, emitAcceleration, glm::vec3);
DEFINE_PROPERTY(PROP_ACCELERATION_SPREAD, AccelerationSpread, accelerationSpread, glm::vec3);
DEFINE_PROPERTY_REF(PROP_EMIT_RADIUS, EmitRadius, emitRadius, glm::vec3);
DEFINE_PROPERTY(PROP_EMIT_RADIUS_START, EmitRadiusStart, emitRadiusStart, float);
DEFINE_PROPERTY(PROP_POLAR_START, PolarStart, polarStart, float);
DEFINE_PROPERTY(PROP_POLAR_FINISH, PolarFinish, polarFinish, float);
DEFINE_PROPERTY(PROP_AZIMUTH_START, AzimuthStart, azimuthStart, float);
DEFINE_PROPERTY(PROP_AZIMUTH_FINISH, AzimuthFinish, azimuthFinish, float);
DEFINE_PROPERTY_REF(PROP_EMIT_ACCELERATION, EmitAcceleration, emitAcceleration, glm::vec3);
DEFINE_PROPERTY_REF(PROP_ACCELERATION_SPREAD, AccelerationSpread, accelerationSpread, glm::vec3);
DEFINE_PROPERTY(PROP_PARTICLE_RADIUS, ParticleRadius, particleRadius, float);
DEFINE_PROPERTY(PROP_RADIUS_SPREAD, RadiusSpread, radiusSpread, float);
DEFINE_PROPERTY(PROP_RADIUS_START, RadiusStart, radiusStart, float);
@ -339,6 +345,12 @@ inline QDebug operator<<(QDebug debug, const EntityItemProperties& properties) {
DEBUG_PROPERTY_IF_CHANGED(debug, properties, EmitSpeed, emitSpeed, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, SpeedSpread, speedSpread, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, EmitOrientation, emitOrientation, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, EmitRadius, emitRadius, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, EmitRadiusStart, emitRadiusStart, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, PolarStart, polarStart, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, PolarFinish, polarFinish, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, AzimuthStart, azimuthStart, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, AzimuthFinish, azimuthFinish, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, EmitAcceleration, emitAcceleration, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, AccelerationSpread, accelerationSpread, "");
DEBUG_PROPERTY_IF_CHANGED(debug, properties, ParticleRadius, particleRadius, "");

View file

@ -163,6 +163,12 @@ enum EntityPropertyList {
PROP_EMIT_SPEED,
PROP_SPEED_SPREAD,
PROP_EMIT_ORIENTATION,
PROP_EMIT_RADIUS,
PROP_EMIT_RADIUS_START,
PROP_POLAR_START,
PROP_POLAR_FINISH,
PROP_AZIMUTH_START,
PROP_AZIMUTH_FINISH,
////////////////////////////////////////////////////////////////////////////////////////////////////
// ATTENTION: add new properties to end of list just ABOVE this line

View file

@ -60,7 +60,13 @@ const float ParticleEffectEntityItem::DEFAULT_LIFESPAN = 3.0f;
const float ParticleEffectEntityItem::DEFAULT_EMIT_RATE = 15.0f;
const float ParticleEffectEntityItem::DEFAULT_EMIT_SPEED = 5.0f;
const float ParticleEffectEntityItem::DEFAULT_SPEED_SPREAD = 1.0f;
const glm::quat ParticleEffectEntityItem::DEFAULT_EMIT_ORIENTATION = glm::angleAxis(-PI_OVER_TWO, X_AXIS);
const glm::quat ParticleEffectEntityItem::DEFAULT_EMIT_ORIENTATION = glm::angleAxis(-PI_OVER_TWO, X_AXIS); // Vertical
const glm::vec3 ParticleEffectEntityItem::DEFAULT_EMIT_RADIUS = glm::vec3(0.0f, 0.0f, 0.0f); // Emit from point
const float ParticleEffectEntityItem::DEFAULT_EMIT_RADIUS_START = 1.0f; // Emit from surface (when emitRadius > 0)
const float ParticleEffectEntityItem::DEFAULT_POLAR_START = 0.0f; // Emit along z-axis
const float ParticleEffectEntityItem::DEFAULT_POLAR_FINISH = 0.0f; // ""
const float ParticleEffectEntityItem::DEFAULT_AZIMUTH_START = -PI; // Emit full circumference (when polarFinish > 0)
const float ParticleEffectEntityItem::DEFAULT_AZIMUTH_FINISH = -PI; // ""
const glm::vec3 ParticleEffectEntityItem::DEFAULT_EMIT_ACCELERATION(0.0f, -9.8f, 0.0f);
const glm::vec3 ParticleEffectEntityItem::DEFAULT_ACCELERATION_SPREAD(0.0f, 0.0f, 0.0f);
const float ParticleEffectEntityItem::DEFAULT_PARTICLE_RADIUS = 0.025f;
@ -123,6 +129,12 @@ void ParticleEffectEntityItem::setEmitOrientation(const glm::quat& emitOrientati
computeAndUpdateDimensions();
}
void ParticleEffectEntityItem::setEmitRadius(const glm::vec3& emitRadius) {
_emitRadius = emitRadius;
computeAndUpdateDimensions();
}
void ParticleEffectEntityItem::setEmitAcceleration(const glm::vec3& emitAcceleration) {
_emitAcceleration = emitAcceleration;
computeAndUpdateDimensions();
@ -141,7 +153,7 @@ void ParticleEffectEntityItem::computeAndUpdateDimensions() {
glm::vec3 maxVelocity = glm::abs(velocity) + velocitySpread;
glm::vec3 maxAccleration = glm::abs(_acceleration) + _accelerationSpread;
glm::vec3 maxDistance = time * maxVelocity + (0.5f * time * time) * maxAccleration;
glm::vec3 maxDistance = _emitRadius + time * maxVelocity + (0.5f * time * time) * maxAccleration;
float maxDistanceValue = std::max(maxDistance.x, std::max(maxDistance.y, maxDistance.z));
@ -168,6 +180,12 @@ EntityItemProperties ParticleEffectEntityItem::getProperties() const {
COPY_ENTITY_PROPERTY_TO_PROPERTIES(emitSpeed, getEmitSpeed);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(speedSpread, getSpeedSpread);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(emitOrientation, getEmitOrientation);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(emitRadius, getEmitRadius);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(emitRadiusStart, getEmitRadiusStart);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(polarStart, getPolarStart);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(polarFinish, getPolarFinish);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(azimuthStart, getAzimuthStart);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(azimuthFinish, getAzimuthFinish);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(emitAcceleration, getEmitAcceleration);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(accelerationSpread, getAccelerationSpread);
COPY_ENTITY_PROPERTY_TO_PROPERTIES(particleRadius, getParticleRadius);
@ -202,6 +220,12 @@ bool ParticleEffectEntityItem::setProperties(const EntityItemProperties& propert
SET_ENTITY_PROPERTY_FROM_PROPERTIES(emitSpeed, setEmitSpeed);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(speedSpread, setSpeedSpread);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(emitOrientation, setEmitOrientation);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(emitRadius, setEmitRadius);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(emitRadiusStart, setEmitRadiusStart);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(polarStart, setPolarStart);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(polarFinish, setPolarFinish);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(azimuthStart, setAzimuthStart);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(azimuthFinish, setAzimuthFinish);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(emitAcceleration, setEmitAcceleration);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(accelerationSpread, setAccelerationSpread);
SET_ENTITY_PROPERTY_FROM_PROPERTIES(particleRadius, setParticleRadius);
@ -306,6 +330,12 @@ int ParticleEffectEntityItem::readEntitySubclassDataFromBuffer(const unsigned ch
READ_ENTITY_PROPERTY(PROP_EMIT_SPEED, float, setEmitSpeed);
READ_ENTITY_PROPERTY(PROP_SPEED_SPREAD, float, setSpeedSpread);
READ_ENTITY_PROPERTY(PROP_EMIT_ORIENTATION, glm::quat, setEmitOrientation);
READ_ENTITY_PROPERTY(PROP_EMIT_RADIUS, glm::vec3, setEmitRadius);
READ_ENTITY_PROPERTY(PROP_EMIT_RADIUS_START, float, setEmitRadiusStart);
READ_ENTITY_PROPERTY(PROP_POLAR_START, float, setPolarStart);
READ_ENTITY_PROPERTY(PROP_POLAR_FINISH, float, setPolarFinish);
READ_ENTITY_PROPERTY(PROP_AZIMUTH_START, float, setAzimuthStart);
READ_ENTITY_PROPERTY(PROP_AZIMUTH_FINISH, float, setAzimuthFinish);
}
return bytesRead;
@ -342,6 +372,12 @@ EntityPropertyFlags ParticleEffectEntityItem::getEntityProperties(EncodeBitstrea
requestedProperties += PROP_EMIT_SPEED;
requestedProperties += PROP_SPEED_SPREAD;
requestedProperties += PROP_EMIT_ORIENTATION;
requestedProperties += PROP_EMIT_RADIUS;
requestedProperties += PROP_EMIT_RADIUS_START;
requestedProperties += PROP_POLAR_START;
requestedProperties += PROP_POLAR_FINISH;
requestedProperties += PROP_AZIMUTH_START;
requestedProperties += PROP_AZIMUTH_FINISH;
return requestedProperties;
}
@ -381,6 +417,12 @@ void ParticleEffectEntityItem::appendSubclassData(OctreePacketData* packetData,
APPEND_ENTITY_PROPERTY(PROP_EMIT_SPEED, getEmitSpeed());
APPEND_ENTITY_PROPERTY(PROP_SPEED_SPREAD, getSpeedSpread());
APPEND_ENTITY_PROPERTY(PROP_EMIT_ORIENTATION, getEmitOrientation());
APPEND_ENTITY_PROPERTY(PROP_EMIT_RADIUS, getEmitRadius());
APPEND_ENTITY_PROPERTY(PROP_EMIT_RADIUS_START, getEmitRadiusStart());
APPEND_ENTITY_PROPERTY(PROP_POLAR_START, getPolarStart());
APPEND_ENTITY_PROPERTY(PROP_POLAR_FINISH, getPolarFinish());
APPEND_ENTITY_PROPERTY(PROP_AZIMUTH_START, getAzimuthStart());
APPEND_ENTITY_PROPERTY(PROP_AZIMUTH_FINISH, getAzimuthFinish());
}
bool ParticleEffectEntityItem::isAnimatingSomething() const {

View file

@ -140,6 +140,30 @@ public:
void setEmitOrientation(const glm::quat& emitOrientation);
const glm::quat& getEmitOrientation() const { return _emitOrientation; }
static const glm::vec3 DEFAULT_EMIT_RADIUS;
void setEmitRadius(const glm::vec3& emitRadius);
const glm::vec3& getEmitRadius() const { return _emitRadius; }
static const float DEFAULT_EMIT_RADIUS_START;
void setEmitRadiusStart(float emitRadiusStart) { _emitRadiusStart = emitRadiusStart; }
float getEmitRadiusStart() const { return _emitRadiusStart; }
static const float DEFAULT_POLAR_START;
void setPolarStart(float polarStart) { _polarStart = polarStart; }
float getPolarStart() const { return _polarStart; }
static const float DEFAULT_POLAR_FINISH;
void setPolarFinish(float polarFinish) { _polarFinish = polarFinish; }
float getPolarFinish() const { return _polarFinish; }
static const float DEFAULT_AZIMUTH_START;
void setAzimuthStart(float azimuthStart) { _azimuthStart = azimuthStart; }
float getAzimuthStart() const { return _azimuthStart; }
static const float DEFAULT_AZIMUTH_FINISH;
void setAzimuthFinish(float azimuthFinish) { _azimuthFinish = azimuthFinish; }
float getAzimuthFinish() const { return _azimuthFinish; }
static const glm::vec3 DEFAULT_EMIT_ACCELERATION;
void setEmitAcceleration(const glm::vec3& emitAcceleration);
const glm::vec3& getEmitAcceleration() const { return _emitAcceleration; }
@ -209,6 +233,12 @@ protected:
float _emitSpeed = DEFAULT_EMIT_SPEED;
float _speedSpread = DEFAULT_SPEED_SPREAD;
glm::quat _emitOrientation = DEFAULT_EMIT_ORIENTATION;
glm::vec3 _emitRadius = DEFAULT_EMIT_RADIUS;
float _emitRadiusStart = DEFAULT_EMIT_RADIUS_START;
float _polarStart = DEFAULT_POLAR_START;
float _polarFinish = DEFAULT_POLAR_FINISH;
float _azimuthStart = DEFAULT_AZIMUTH_START;
float _azimuthFinish = DEFAULT_AZIMUTH_FINISH;
glm::vec3 _emitAcceleration = DEFAULT_EMIT_ACCELERATION;
glm::vec3 _accelerationSpread = DEFAULT_ACCELERATION_SPREAD;
float _particleRadius = DEFAULT_PARTICLE_RADIUS;