Class: Mittsu::PointCloud

Inherits:
Object3D show all
Defined in:
lib/mittsu/objects/point_cloud.rb,
lib/mittsu/renderers/opengl/objects/point_cloud.rb

Constant Summary

Constants inherited from Object3D

Object3D::DefaultUp

Instance Attribute Summary collapse

Attributes inherited from Object3D

#active, #cast_shadow, #children, #frustum_culled, #id, #matrix, #matrix_auto_update, #matrix_world, #matrix_world_needs_update, #model_view_matrix, #morph_target_influences, #name, #parent, #position, #quaternion, #receive_shadow, #render_order, #renderer, #rotation, #rotation_auto_update, #scale, #type, #up, #user_data, #uuid, #visible

Instance Method Summary collapse

Methods inherited from Object3D

#active?, #add, #apply_matrix, #buffer_material, #get_object_by_id, #get_object_by_name, #get_object_by_property, #get_world_direction, #get_world_position, #get_world_quaternion, #get_world_rotation, #get_world_scale, #init, #load_uniforms_matrices, #local_to_world, #look_at, #print_tree, #project, #remove, #rotate_on_axis, #rotate_x, #rotate_y, #rotate_z, #set_rotation_from_axis_angle, #set_rotation_from_euler, #set_rotation_from_matrix, #set_rotation_from_quaternion, #setup_matrices, #to_json, #to_s, #translate_on_axis, #translate_x, #translate_y, #translate_z, #traverse, #traverse_ancestors, #traverse_visible, #update_matrix, #update_matrix_world, #world_to_local

Methods included from EventDispatcher

#add_event_listener, #dispatch_event, #has_event_listener, #remove_event_listener

Constructor Details

#initialize(geometry = Geometry.new, material = PointCloudMaterial.new(color: rand * 0xffffff)) ⇒ PointCloud 



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# File 'lib/mittsu/objects/point_cloud.rb', line 5

def initialize(geometry = Geometry.new, material = PointCloudMaterial.new(color: rand * 0xffffff))
  super()

  @type = 'PointCloud'

  @geometry = geometry
  @material = material

  @_inverse_matrix = Matrix4.new
  @_ray = Ray.new
end

Instance Attribute Details

#geometry ⇒ Object

Returns the value of attribute geometry.



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# File 'lib/mittsu/objects/point_cloud.rb', line 3

def geometry
  @geometry
end

#material ⇒ Object

Returns the value of attribute material.



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# File 'lib/mittsu/objects/point_cloud.rb', line 3

def material
  @material
end

Instance Method Details

#add_opengl_object ⇒ Object 



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# File 'lib/mittsu/renderers/opengl/objects/point_cloud.rb', line 35

def add_opengl_object
  @renderer.add_opengl_object(geometry, self)
end

#clone(object = PointCloud.new(@geometry, @material)) ⇒ Object 



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# File 'lib/mittsu/objects/point_cloud.rb', line 76

def clone(object = PointCloud.new(@geometry, @material))
  super(object)
end

#init_geometry ⇒ Object 



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# File 'lib/mittsu/renderers/opengl/objects/point_cloud.rb', line 24

def init_geometry
  geometry.renderer = @renderer
  if geometry.vertex_buffer.nil?
    geometry.create_particle_buffers
    geometry.init_particle_buffers(self)

    geometry.vertices_need_update = true
    geometry.colors_need_update = true
  end
end

#raycast(raycaster, intersects) ⇒ Object 



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# File 'lib/mittsu/objects/point_cloud.rb', line 17

def raycast(raycaster, intersects)
  threshold = raycaster.params[:point_cloud][:threshold]
  @_inverse_matrix.inverse(self.materix_world)
  @_ray.copy(raycaster.ray).apply_matrix4(@_inverse_matrix)

  if !geometry.bounding_box.nil?
    return if ray.intersection_box?(geometry.bounding_box) == false
  end

  local_threshold = threshold / ((self.scale.x + self.scale.y + self.scale.z) / 3.0)
  position = Vector3.new

  if geometry.is_a?(BufferGeometry)
    attributes = geometry.attributes
    positions = attributes.position.array

    if !attributes[:index].nil?
      indices = attributes[:index][:array]
      offsets = geometry.compute_offsets

      if offsets.empty?
        offsets = [{
          start: 0,
          count: indices.length,
          index: 0
        }]
      end

      offsets.each do |offset|
        start = offset[:start]
        count = offset[:count]
        index = offset[:index]

        (start...start+count).each do |i|
          a = index + indices[i]
          position.from_array(positions, a * 3)
          test_point(position, a, local_threshold, raycaster, intersects)
        end
      end
    else
      point_count = positions.count / 3

      point_count.times do |i|
        position.set(
          positions[3 * i],
          positions[3 * i + 1],
          positions[3 * i + 2]
        )

        test_point(position, i, local_threshold, raycaster, intersects)
      end
    end
  else
    geometry.vertices.each_with_index do |vertex, i|
      test_point(vertex, i, local_threshold, raycaster, intersects)
    end
  end
end

#render_buffer(camera, lights, fog, material, geometry_group, update_buffers) ⇒ Object 



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# File 'lib/mittsu/renderers/opengl/objects/point_cloud.rb', line 3

def render_buffer(camera, lights, fog, material, geometry_group, update_buffers)
  glDrawArrays(GL_POINTS, 0, geometry_group.particle_count)

  @renderer.info[:render][:calls] += 1
  @renderer.info[:render][:points] += geometry_group.particle_count
end

#update ⇒ Object 



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# File 'lib/mittsu/renderers/opengl/objects/point_cloud.rb', line 10

def update
      material = buffer_material(geometry)
      custom_attributes_dirty = material.attributes &&  material.custom_attributes_dirty?

      if geometry.vertices_need_update || geometry.colors_need_update || custom_attributes_dirty
geometry.set_particle_buffers(GL_DYNAMIC_DRAW)
      end

      geometry.vertices_need_update = false
      geometry.colors_need_update = false

  material.attributes && material.clear_custom_attributes
end