Curve

Inherits: Resource < Reference < Object

A mathematic curve.

Description

A curve that can be saved and re-used for other objects. By default, it ranges between 0 and 1 on the Y axis and positions points relative to the 0.5 Y position.

See also Gradient which is designed for color interpolation. See also Curve2D and Curve3D.

Properties

int

bake_resolution

100

float

max_value

1.0

float

min_value

0.0

Methods

int

add_point ( Vector2 position, float left_tangent=0, float right_tangent=0, TangentMode left_mode=0, TangentMode right_mode=0 )

void

bake ( )

void

clean_dupes ( )

void

clear_points ( )

int

get_point_count ( ) const

TangentMode

get_point_left_mode ( int index ) const

float

get_point_left_tangent ( int index ) const

Vector2

get_point_position ( int index ) const

TangentMode

get_point_right_mode ( int index ) const

float

get_point_right_tangent ( int index ) const

float

interpolate ( float offset ) const

float

interpolate_baked ( float offset )

void

remove_point ( int index )

void

set_point_left_mode ( int index, TangentMode mode )

void

set_point_left_tangent ( int index, float tangent )

int

set_point_offset ( int index, float offset )

void

set_point_right_mode ( int index, TangentMode mode )

void

set_point_right_tangent ( int index, float tangent )

void

set_point_value ( int index, float y )

Signals

  • range_changed ( )

Emitted when max_value or min_value is changed.

Enumerations

enum TangentMode:

  • TANGENT_FREE = 0 --- The tangent on this side of the point is user-defined.

  • TANGENT_LINEAR = 1 --- The curve calculates the tangent on this side of the point as the slope halfway towards the adjacent point.

  • TANGENT_MODE_COUNT = 2 --- The total number of available tangent modes.

Property Descriptions

  • int bake_resolution

Default

100

Setter

set_bake_resolution(value)

Getter

get_bake_resolution()

The number of points to include in the baked (i.e. cached) curve data.

Default

1.0

Setter

set_max_value(value)

Getter

get_max_value()

The maximum value the curve can reach.

Default

0.0

Setter

set_min_value(value)

Getter

get_min_value()

The minimum value the curve can reach.

Method Descriptions

Adds a point to the curve. For each side, if the *_mode is TANGENT_LINEAR, the *_tangent angle (in degrees) uses the slope of the curve halfway to the adjacent point. Allows custom assignments to the *_tangent angle if *_mode is set to TANGENT_FREE.

  • void bake ( )

Recomputes the baked cache of points for the curve.

  • void clean_dupes ( )

Removes points that are closer than CMP_EPSILON (0.00001) units to their neighbor on the curve.

  • void clear_points ( )

Removes all points from the curve.

  • int get_point_count ( ) const

Returns the number of points describing the curve.

Returns the left TangentMode for the point at index.

  • float get_point_left_tangent ( int index ) const

Returns the left tangent angle (in degrees) for the point at index.

Returns the curve coordinates for the point at index.

Returns the right TangentMode for the point at index.

  • float get_point_right_tangent ( int index ) const

Returns the right tangent angle (in degrees) for the point at index.

Returns the Y value for the point that would exist at the X position offset along the curve.

Returns the Y value for the point that would exist at the X position offset along the curve using the baked cache. Bakes the curve's points if not already baked.

  • void remove_point ( int index )

Removes the point at index from the curve.

Sets the left TangentMode for the point at index to mode.

  • void set_point_left_tangent ( int index, float tangent )

Sets the left tangent angle for the point at index to tangent.

Sets the offset from 0.5.

Sets the right TangentMode for the point at index to mode.

  • void set_point_right_tangent ( int index, float tangent )

Sets the right tangent angle for the point at index to tangent.

  • void set_point_value ( int index, float y )

Assigns the vertical position y to the point at index.