Module io.github.shimeoki.jfx.rasterization

Package io.github.shimeoki.jfx.rasterization.triangle

Class Barycentricser

java.lang.Object

io.github.shimeoki.jfx.rasterization.triangle.Barycentricser

public final class Barycentricser
extends Object

A class for memory and time efficient Barycentrics generation from a Triangle.

Exists for 3 reasons: to not allocate new barycentrics each time, to cache the calculations for a single triangle and to not enforce the implementation of this functionality on user.

Since:

2.0.0

See Also:

• Triangle
• Barycentrics

Constructor Summary

Constructors

Constructor	Description
Barycentricser()	Creates a new Barycentricser instance.

Method Summary

Modifier and Type	Method	Description
Barycentrics	barycentrics()	Returns a reference to the triangle barycentrics in this barycentricser object.
void	calculate(float x, float y)	Calculates the barycentrics in this barycenctricser based on the current coordinates.
void	setTriangle(Triangle t)	Sets the new triangle to calculate the barycentrics for.
Triangle	triangle()	Returns a reference to the current used triangle in this barycentricser object.
void	update()	Updates cached points to the current state of the used triangle.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Barycentricser

public Barycentricser()

Creates a new Barycentricser instance.

Creates a new Barycentrics with zeros as coordinates.

Since:

2.0.0

See Also:

• Barycentrics

Method Details

barycentrics

public Barycentrics barycentrics()

Returns a reference to the triangle barycentrics in this barycentricser object.

Returns:

reference to the barycentrics in this barycentricser

Since:

2.0.0

See Also:

• Barycentrics

triangle

public Triangle triangle()

Returns a reference to the current used triangle in this barycentricser object.

Returns:

reference to the triangle in this barycentricser

Since:

2.0.0

See Also:

• Triangle

setTriangle

public void setTriangle(Triangle t)

Sets the new triangle to calculate the barycentrics for.

Updates the barycentrics in the object automatically on call.

Parameters:

t - the triangle to use

Throws:

NullPointerException - if t is null

Since:

2.0.0

See Also:

• Triangle

update

public void update()

Updates cached points to the current state of the used triangle.

Because the triangle can be modified externally (and just a new one can be set), but the rasterization process considers only a single frame, the update is a separate method.

Since:

2.0.0

calculate

public void calculate(float x,
 float y)

Calculates the barycentrics in this barycenctricser based on the current coordinates.

Updates the triangle barycentrics object accordingly on call.

Parameters:

x - first coordinate

y - second coordinate

Since:

2.0.0