Class: ParticleFX2D::Ruby2D::ParticleCircle

Inherits:
Ruby2D::Circle
  • Object
show all
Includes:
ShapeRenderer
Defined in:
lib/particlefx2d/ruby2d/particle_circle.rb

Overview

A particle shape that is based on the Ruby2D Circle shape.

Class Method Summary collapse

Instance Method Summary collapse

Methods included from ShapeRenderer

#hide_particle, #show_particle

Methods included from ParticleFX2D::Renderer

#hide_particle, #show_particle

Class Method Details

.for(particle) ⇒ Object

Called by the emitter for each particle that it manages. Creates an instance of ParticleCircle intialized with the particle’s position, size and colour.

Parameters:



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# File 'lib/particlefx2d/ruby2d/particle_circle.rb', line 15

def self.for(particle)
  s = ParticleCircle.new x: particle.x, y: particle.y,
                         radius: particle.size / 2
  s.color! particle.color
  s.remove
  s
end

Instance Method Details

#center!(centre_x, centre_y) ⇒ Object

Sets the circle’s position using the incoming centre coordinates.



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# File 'lib/particlefx2d/ruby2d/particle_circle.rb', line 24

def center!(centre_x, centre_y)
  self.x = centre_x
  self.y = centre_y
end

#draw_particle(particle) ⇒ Object

Sets the radius using the particle size and calls #super



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# File 'lib/particlefx2d/ruby2d/particle_circle.rb', line 30

def draw_particle(particle)
  self.radius = particle.size / 2
  super
end