This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Core Javadoc and Libraries Javadoc.

Name

lerp()
Examples
example pic
float a = 20;
float b = 80;
float c = lerp(a, b, .2);
float d = lerp(a, b, .5);
float e = lerp(a, b, .8);
beginShape(POINTS);
vertex(a, 50);
vertex(b, 50);
vertex(c, 50);
vertex(d, 50);
vertex(e, 50);
endShape();
example pic
int x1 = 15;
int y1 = 10;
int x2 = 80;
int y2 = 90;
line(x1, y1, x2, y2);
for (int i = 0; i <= 10; i++) {
  float x = lerp(x1, x2, i/10.0) + 10;
  float y = lerp(y1, y2, i/10.0);
  point(x, y);
}
Description Calculates a number between two numbers at a specific increment. The amt parameter is the amount to interpolate between the two values where 0.0 equal to the first point, 0.1 is very near the first point, 0.5 is half-way in between, etc. The lerp function is convenient for creating motion along a straight path and for drawing dotted lines.
Syntax
lerp(start, stop, amt)
Parameters
start float: first value
stop float: second value
amt float: float between 0.0 and 1.0
Returnsfloat
RelatedcurvePoint()
bezierPoint()
lerp()
lerpColor()
Updated on January 1, 2021 03:38:06am EST

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.