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ParticleProcessMaterial
Inherits: Material < Resource < RefCounted < Object
Particle properties for GPUParticles3D and GPUParticles2D nodes.
Description
ParticleProcessMaterial defines particle properties and behavior. It is used in the process_material of GPUParticles3D and GPUParticles2D emitter nodes.
Some of this material’s properties are applied to each particle when emitted, while others can have a CurveTexture applied to vary values over the lifetime of the particle.
Particle animation is available only in GPUParticles2D. To use it, attach a CanvasItemMaterial, with CanvasItemMaterial.particles_animation enabled, to the particles node.
Properties
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Methods
get_param_max ( Parameter param ) const | |
get_param_min ( Parameter param ) const | |
get_param_texture ( Parameter param ) const | |
get_particle_flag ( ParticleFlags particle_flag ) const | |
void | set_param_max ( Parameter param, float value ) |
void | set_param_min ( Parameter param, float value ) |
void | set_param_texture ( Parameter param, Texture2D texture ) |
void | set_particle_flag ( ParticleFlags particle_flag, bool enable ) |
Enumerations
enum Parameter:
Parameter PARAM_INITIAL_LINEAR_VELOCITY = 0
Use with set_param_min, set_param_max, and set_param_texture to set initial velocity properties.
Parameter PARAM_ANGULAR_VELOCITY = 1
Use with set_param_min, set_param_max, and set_param_texture to set angular velocity properties.
Parameter PARAM_ORBIT_VELOCITY = 2
Use with set_param_min, set_param_max, and set_param_texture to set orbital velocity properties.
Parameter PARAM_LINEAR_ACCEL = 3
Use with set_param_min, set_param_max, and set_param_texture to set linear acceleration properties.
Parameter PARAM_RADIAL_ACCEL = 4
Use with set_param_min, set_param_max, and set_param_texture to set radial acceleration properties.
Parameter PARAM_TANGENTIAL_ACCEL = 5
Use with set_param_min, set_param_max, and set_param_texture to set tangential acceleration properties.
Parameter PARAM_DAMPING = 6
Use with set_param_min, set_param_max, and set_param_texture to set damping properties.
Parameter PARAM_ANGLE = 7
Use with set_param_min, set_param_max, and set_param_texture to set angle properties.
Parameter PARAM_SCALE = 8
Use with set_param_min, set_param_max, and set_param_texture to set scale properties.
Parameter PARAM_HUE_VARIATION = 9
Use with set_param_min, set_param_max, and set_param_texture to set hue variation properties.
Parameter PARAM_ANIM_SPEED = 10
Use with set_param_min, set_param_max, and set_param_texture to set animation speed properties.
Parameter PARAM_ANIM_OFFSET = 11
Use with set_param_min, set_param_max, and set_param_texture to set animation offset properties.
Parameter PARAM_MAX = 15
Represents the size of the Parameter enum.
Parameter PARAM_TURB_VEL_INFLUENCE = 13
Use with set_param_min and set_param_max to set the turbulence minimum und maximum influence on each particles velocity.
Parameter PARAM_TURB_INIT_DISPLACEMENT = 14
Use with set_param_min and set_param_max to set the turbulence minimum and maximum displacement of the particles spawn position.
Parameter PARAM_TURB_INFLUENCE_OVER_LIFE = 12
Use with set_param_texture to set the turbulence influence over the particles life time.
enum ParticleFlags:
ParticleFlags PARTICLE_FLAG_ALIGN_Y_TO_VELOCITY = 0
Use with set_particle_flag to set particle_flag_align_y.
ParticleFlags PARTICLE_FLAG_ROTATE_Y = 1
Use with set_particle_flag to set particle_flag_rotate_y.
ParticleFlags PARTICLE_FLAG_DISABLE_Z = 2
Use with set_particle_flag to set particle_flag_disable_z.
ParticleFlags PARTICLE_FLAG_MAX = 3
Represents the size of the ParticleFlags enum.
enum EmissionShape:
EmissionShape EMISSION_SHAPE_POINT = 0
All particles will be emitted from a single point.
EmissionShape EMISSION_SHAPE_SPHERE = 1
Particles will be emitted in the volume of a sphere.
EmissionShape EMISSION_SHAPE_SPHERE_SURFACE = 2
Particles will be emitted on the surface of a sphere.
EmissionShape EMISSION_SHAPE_BOX = 3
Particles will be emitted in the volume of a box.
EmissionShape EMISSION_SHAPE_POINTS = 4
Particles will be emitted at a position determined by sampling a random point on the emission_point_texture. Particle color will be modulated by emission_color_texture.
EmissionShape EMISSION_SHAPE_DIRECTED_POINTS = 5
Particles will be emitted at a position determined by sampling a random point on the emission_point_texture. Particle velocity and rotation will be set based on emission_normal_texture. Particle color will be modulated by emission_color_texture.
EmissionShape EMISSION_SHAPE_RING = 6
Particles will be emitted in a ring or cylinder.
EmissionShape EMISSION_SHAPE_MAX = 7
Represents the size of the EmissionShape enum.
enum SubEmitterMode:
SubEmitterMode SUB_EMITTER_DISABLED = 0
SubEmitterMode SUB_EMITTER_CONSTANT = 1
SubEmitterMode SUB_EMITTER_AT_END = 2
SubEmitterMode SUB_EMITTER_AT_COLLISION = 3
SubEmitterMode SUB_EMITTER_MAX = 4
Represents the size of the SubEmitterMode enum.
enum CollisionMode:
CollisionMode COLLISION_DISABLED = 0
No collision for particles. Particles will go through GPUParticlesCollision3D nodes.
CollisionMode COLLISION_RIGID = 1
RigidBody3D-style collision for particles using GPUParticlesCollision3D nodes.
CollisionMode COLLISION_HIDE_ON_CONTACT = 2
Hide particles instantly when colliding with a GPUParticlesCollision3D node. This can be combined with a subemitter that uses the COLLISION_RIGID collision mode to “replace” the parent particle with the subemitter on impact.
CollisionMode COLLISION_MAX = 3
Represents the size of the CollisionMode enum.
Property Descriptions
Texture2D angle_curve
Each particle’s rotation will be animated along this CurveTexture.
float angle_max = 0.0
Maximum initial rotation applied to each particle, in degrees.
Only applied when particle_flag_disable_z or particle_flag_rotate_y are true or the BaseMaterial3D being used to draw the particle is using BaseMaterial3D.BILLBOARD_PARTICLES.
float angle_min = 0.0
Minimum equivalent of angle_max.
Texture2D angular_velocity_curve
Each particle’s angular velocity (rotation speed) will vary along this CurveTexture over its lifetime.
float angular_velocity_max = 0.0
Maximum initial angular velocity (rotation speed) applied to each particle in degrees per second.
Only applied when particle_flag_disable_z or particle_flag_rotate_y are true or the BaseMaterial3D being used to draw the particle is using BaseMaterial3D.BILLBOARD_PARTICLES.
float angular_velocity_min = 0.0
Minimum equivalent of angular_velocity_max.
Texture2D anim_offset_curve
Each particle’s animation offset will vary along this CurveTexture.
float anim_offset_max = 0.0
Maximum animation offset that corresponds to frame index in the texture. 0 is the first frame, 1 is the last one. See CanvasItemMaterial.particles_animation.
float anim_offset_min = 0.0
Minimum equivalent of anim_offset_max.
Texture2D anim_speed_curve
Each particle’s animation speed will vary along this CurveTexture.
float anim_speed_max = 0.0
Maximum particle animation speed. Animation speed of 1 means that the particles will make full 0 to 1 offset cycle during lifetime, 2 means 2 cycles etc.
With animation speed greater than 1, remember to enable CanvasItemMaterial.particles_anim_loop property if you want the animation to repeat.
float anim_speed_min = 0.0
Minimum equivalent of anim_speed_max.
bool attractor_interaction_enabled = true
True if the interaction with particle attractors is enabled.
float collision_bounce
The particles’ bounciness. Values range from 0 (no bounce) to 1 (full bounciness). Only effective if collision_mode is COLLISION_RIGID.
float collision_friction
The particles’ friction. Values range from 0 (frictionless) to 1 (maximum friction). Only effective if collision_mode is COLLISION_RIGID.
CollisionMode collision_mode = 0
void set_collision_mode ( CollisionMode value )
CollisionMode get_collision_mode ( )
The particles’ collision mode.
Note: 3D Particles can only collide with GPUParticlesCollision3D nodes, not PhysicsBody3D nodes. To make particles collide with various objects, you can add GPUParticlesCollision3D nodes as children of PhysicsBody3D nodes.
Note: 2D Particles can only collide with LightOccluder2D nodes, not PhysicsBody2D nodes.
bool collision_use_scale = false
Should collision take scale into account.
Color color = Color(1, 1, 1, 1)
Each particle’s initial color. If the GPUParticles2D‘s texture is defined, it will be multiplied by this color.
Note: color multiplies the particle mesh’s vertex colors. To have a visible effect on a BaseMaterial3D, BaseMaterial3D.vertex_color_use_as_albedo must be true. For a ShaderMaterial, ALBEDO *= COLOR.rgb; must be inserted in the shader’s fragment() function. Otherwise, color will have no visible effect.
Texture2D color_initial_ramp
Each particle’s initial color will vary along this GradientTexture1D (multiplied with color).
Note: color_initial_ramp multiplies the particle mesh’s vertex colors. To have a visible effect on a BaseMaterial3D, BaseMaterial3D.vertex_color_use_as_albedo must be true. For a ShaderMaterial, ALBEDO *= COLOR.rgb; must be inserted in the shader’s fragment() function. Otherwise, color_initial_ramp will have no visible effect.
Texture2D color_ramp
Each particle’s color will vary along this GradientTexture1D over its lifetime (multiplied with color).
Note: color_ramp multiplies the particle mesh’s vertex colors. To have a visible effect on a BaseMaterial3D, BaseMaterial3D.vertex_color_use_as_albedo must be true. For a ShaderMaterial, ALBEDO *= COLOR.rgb; must be inserted in the shader’s fragment() function. Otherwise, color_ramp will have no visible effect.
Texture2D damping_curve
Damping will vary along this CurveTexture.
float damping_max = 0.0
The maximum rate at which particles lose velocity. For example value of 100 means that the particle will go from 100 velocity to 0 in 1 second.
float damping_min = 0.0
Minimum equivalent of damping_max.
Vector3 direction = Vector3(1, 0, 0)
Unit vector specifying the particles’ emission direction.
Vector3 emission_box_extents
The box’s extents if emission_shape is set to EMISSION_SHAPE_BOX.
Texture2D emission_color_texture
Particle color will be modulated by color determined by sampling this texture at the same point as the emission_point_texture.
Note: emission_color_texture multiplies the particle mesh’s vertex colors. To have a visible effect on a BaseMaterial3D, BaseMaterial3D.vertex_color_use_as_albedo must be true. For a ShaderMaterial, ALBEDO *= COLOR.rgb; must be inserted in the shader’s fragment() function. Otherwise, emission_color_texture will have no visible effect.
Texture2D emission_normal_texture
Particle velocity and rotation will be set by sampling this texture at the same point as the emission_point_texture. Used only in EMISSION_SHAPE_DIRECTED_POINTS. Can be created automatically from mesh or node by selecting “Create Emission Points from Mesh/Node” under the “Particles” tool in the toolbar.
int emission_point_count
The number of emission points if emission_shape is set to EMISSION_SHAPE_POINTS or EMISSION_SHAPE_DIRECTED_POINTS.
Texture2D emission_point_texture
Particles will be emitted at positions determined by sampling this texture at a random position. Used with EMISSION_SHAPE_POINTS and EMISSION_SHAPE_DIRECTED_POINTS. Can be created automatically from mesh or node by selecting “Create Emission Points from Mesh/Node” under the “Particles” tool in the toolbar.
Vector3 emission_ring_axis
The axis of the ring when using the emitter EMISSION_SHAPE_RING.
float emission_ring_height
The height of the ring when using the emitter EMISSION_SHAPE_RING.
float emission_ring_inner_radius
The inner radius of the ring when using the emitter EMISSION_SHAPE_RING.
float emission_ring_radius
The radius of the ring when using the emitter EMISSION_SHAPE_RING.
EmissionShape emission_shape = 0
void set_emission_shape ( EmissionShape value )
EmissionShape get_emission_shape ( )
Particles will be emitted inside this region. Use EmissionShape constants for values.
float emission_sphere_radius
The sphere’s radius if emission_shape is set to EMISSION_SHAPE_SPHERE.
float flatness = 0.0
Amount of spread along the Y axis.
Vector3 gravity = Vector3(0, -9.8, 0)
Gravity applied to every particle.
Texture2D hue_variation_curve
Each particle’s hue will vary along this CurveTexture.
float hue_variation_max = 0.0
Maximum initial hue variation applied to each particle. It will shift the particle color’s hue.
float hue_variation_min = 0.0
Minimum equivalent of hue_variation_max.
float initial_velocity_max = 0.0
Maximum initial velocity magnitude for each particle. Direction comes from direction and spread.
float initial_velocity_min = 0.0
Minimum equivalent of initial_velocity_max.
float lifetime_randomness = 0.0
Particle lifetime randomness ratio. The equation for the lifetime of a particle is lifetime * (1.0 - randf() * lifetime_randomness). For example, a lifetime_randomness of 0.4 scales the lifetime between 0.6 to 1.0 of its original value.
Texture2D linear_accel_curve
Each particle’s linear acceleration will vary along this CurveTexture.
float linear_accel_max = 0.0
Maximum linear acceleration applied to each particle in the direction of motion.
float linear_accel_min = 0.0
Minimum equivalent of linear_accel_max.
Texture2D orbit_velocity_curve
Each particle’s orbital velocity will vary along this CurveTexture.
float orbit_velocity_max
Maximum orbital velocity applied to each particle. Makes the particles circle around origin. Specified in number of full rotations around origin per second.
Only available when particle_flag_disable_z is true.
float orbit_velocity_min
Minimum equivalent of orbit_velocity_max.
bool particle_flag_align_y = false
void set_particle_flag ( ParticleFlags particle_flag, bool enable )
bool get_particle_flag ( ParticleFlags particle_flag ) const
Align Y axis of particle with the direction of its velocity.
bool particle_flag_disable_z = false
void set_particle_flag ( ParticleFlags particle_flag, bool enable )
bool get_particle_flag ( ParticleFlags particle_flag ) const
If true, particles will not move on the z axis.
bool particle_flag_rotate_y = false
void set_particle_flag ( ParticleFlags particle_flag, bool enable )
bool get_particle_flag ( ParticleFlags particle_flag ) const
If true, particles rotate around Y axis by angle_min.
Texture2D radial_accel_curve
Each particle’s radial acceleration will vary along this CurveTexture.
float radial_accel_max = 0.0
Maximum radial acceleration applied to each particle. Makes particle accelerate away from the origin or towards it if negative.
float radial_accel_min = 0.0
Minimum equivalent of radial_accel_max.
Texture2D scale_curve
Each particle’s scale will vary along this CurveTexture. If a CurveXYZTexture is supplied instead, the scale will be separated per-axis.
float scale_max = 1.0
Maximum initial scale applied to each particle.
float scale_min = 1.0
Minimum equivalent of scale_max.
float spread = 45.0
Each particle’s initial direction range from +spread to -spread degrees.
int sub_emitter_amount_at_collision
Sub particle amount on collision.
Maximum amount set in the sub particles emitter.
int sub_emitter_amount_at_end
There is currently no description for this property. Please help us by contributing one!
float sub_emitter_frequency
There is currently no description for this property. Please help us by contributing one!
bool sub_emitter_keep_velocity = false
There is currently no description for this property. Please help us by contributing one!
SubEmitterMode sub_emitter_mode = 0
void set_sub_emitter_mode ( SubEmitterMode value )
SubEmitterMode get_sub_emitter_mode ( )
There is currently no description for this property. Please help us by contributing one!
Texture2D tangential_accel_curve
Each particle’s tangential acceleration will vary along this CurveTexture.
float tangential_accel_max = 0.0
Maximum tangential acceleration applied to each particle. Tangential acceleration is perpendicular to the particle’s velocity giving the particles a swirling motion.
float tangential_accel_min = 0.0
Minimum equivalent of tangential_accel_max.
bool turbulence_enabled = false
If true, enables turbulence for the particle system. Turbulence can be used to vary particle movement according to its position (based on a 3D noise pattern). In 3D, GPUParticlesAttractorVectorField3D with NoiseTexture3D can be used as an alternative to turbulence that works in world space and with multiple particle systems reacting in the same way.
Note: Enabling turbulence has a high performance cost on the GPU. Only enable turbulence on a few particle systems at once at most, and consider disabling it when targeting mobile/web platforms.
float turbulence_influence_max = 0.1
Maximum turbulence influence on each particle.
The actual amount of turbulence influence on each particle is calculated as a random value between turbulence_influence_min and turbulence_influence_max and multiplied by the amount of turbulence influence from turbulence_influence_over_life.
float turbulence_influence_min = 0.1
Minimum turbulence influence on each particle.
The actual amount of turbulence influence on each particle is calculated as a random value between turbulence_influence_min and turbulence_influence_max and multiplied by the amount of turbulence influence from turbulence_influence_over_life.
Texture2D turbulence_influence_over_life
Each particle’s amount of turbulence will be influenced along this CurveTexture over its life time.
float turbulence_initial_displacement_max = 0.0
Maximum displacement of each particle’s spawn position by the turbulence.
The actual amount of displacement will be a factor of the underlying turbulence multiplied by a random value between turbulence_initial_displacement_min and turbulence_initial_displacement_max.
float turbulence_initial_displacement_min = 0.0
Minimum displacement of each particle’s spawn position by the turbulence.
The actual amount of displacement will be a factor of the underlying turbulence multiplied by a random value between turbulence_initial_displacement_min and turbulence_initial_displacement_max.
float turbulence_noise_scale = 9.0
This value controls the overall scale/frequency of the turbulence noise pattern.
A small scale will result in smaller features with more detail while a high scale will result in smoother noise with larger features.
Vector3 turbulence_noise_speed = Vector3(0, 0, 0)
A scrolling velocity for the turbulence field. This sets a directional trend for the pattern to move in over time.
The default value of Vector3(0, 0, 0) turns off the scrolling.
float turbulence_noise_speed_random = 0.2
The in-place rate of change of the turbulence field. This defines how quickly the noise pattern varies over time.
A value of 0.0 will result in a fixed pattern.
float turbulence_noise_strength = 1.0
The turbulence noise strength. Increasing this will result in a stronger, more contrasting, flow pattern.
Method Descriptions
float get_param_max ( Parameter param ) const
Returns the maximum value range for the given parameter.
float get_param_min ( Parameter param ) const
Returns the minimum value range for the given parameter.
Texture2D get_param_texture ( Parameter param ) const
Returns the Texture2D used by the specified parameter.
bool get_particle_flag ( ParticleFlags particle_flag ) const
Returns true if the specified particle flag is enabled. See ParticleFlags for options.
void set_param_max ( Parameter param, float value )
Sets the maximum value range for the given parameter.
void set_param_min ( Parameter param, float value )
Sets the minimum value range for the given parameter.
void set_param_texture ( Parameter param, Texture2D texture )
Sets the Texture2D for the specified Parameter.
void set_particle_flag ( ParticleFlags particle_flag, bool enable )
If true, enables the specified particle flag. See ParticleFlags for options.
