### lerp()

#### Description

Calculates linear interpolation from one vector to another vector. (Just like regular lerp(), but for vectors.)

Note that there is one static version of this method, and two non-static versions. The static version, lerp(v1, v2, amt) is given the two vectors to interpolate and returns a new PVector object. The static version is used by referencing the PVector class directly. (See the middle example above.) The non-static versions, lerp(v, amt) and lerp(x, y, z, amt), do not create a new PVector, but transform the values of the PVector on which they are called. These non-static versions perform the same operation, but the former takes another vector as input, while the latter takes three float values. (See the top and bottom examples above, respectively.)

#### Examples

• ``````// Non-static (lerp on a specific vector)

PVector current;
PVector target;

void setup() {
current = new PVector(0.0, 0.0);
target = new PVector(100.0, 100.0);
current.lerp(target, 0.5);
println(current);  // Prints "[ 50.0, 50.0, 0.0 ]"
}
``````
• ``````// Static (return a new vector)

PVector start;
PVector end;
PVector middle;

void setup() {
start = new PVector(0.0, 0.0);
end = new PVector(100.0, 100.0);
middle = PVector.lerp(start, end, 0.5);
println(middle);  // Prints "[ 50.0, 50.0, 0.0 ]"
}
``````
• ``````// Non-static (lerp on a specific vector)

PVector v;

void setup() {
v = new PVector(0.0, 0.0);
}

void draw() {
v.lerp(mouseX, mouseY, 0.0, 0.1);
ellipse(v.x, v.y, 20, 20);
}
``````

#### Syntax

• `.lerp(v, amt)`
• `.lerp(v1, v2, amt)`
• `.lerp(x, y, z, amt)`

#### Parameters

• `v``(PVector)`the vector to lerp to
• `amt``(float)`The amount of interpolation; some value between 0.0 (old vector) and 1.0 (new vector). 0.1 is very near the old vector; 0.5 is halfway in between.
• `v1``(PVector)`the vector to start from
• `v2``(PVector)`the vector to lerp to
• `x``(float)`the x component to lerp to
• `y``(float)`the y component to lerp to
• `z``(float)`the z component to lerp to

#### Return

• `PVector`