class DemCurves::LineUpConstraint
Public Class Methods
new(pivot, p0, p1, mirror_distance=false, follow=:pivot)
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# File lib/core/constraint.rb, line 26 def initialize(pivot, p0, p1, mirror_distance=false, follow=:pivot) pivot.add_constraint self p0.add_constraint self p1.add_constraint self @master_point = pivot @slave_points = [p0, p1] @mirror_distance = mirror_distance @follow = follow p1.move_to p1.loc #hacky way to trigger readjustment end
Public Instance Methods
handle_master(master, orig_src, params)
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# File lib/core/constraint.rb, line 38 def handle_master(master, orig_src, params) if (params.include? :new_pos and params.include? :old_pos) or params.include? :rel case @follow when :pivot unless params.include? :rel params[:rel] = params[:new_pos], params[:old_pos] end params.delete(:new_pos) params.delete(:old_pos) @slave_points.each do |slave| slave.notify_to_move orig_src, self, params end when :p0 direction = (params[:new_pos] - @slave_points[0].loc).unit distance = (params[:new_pos] - @slave_points[1].loc).r @slave_points[1].notify_to_move orig_src, self, {:new_pos => params[:new_pos] + (distance * direction)} when :p1 direction = (params[:new_pos] - @slave_points[1].loc).unit distance = (params[:new_pos] - @slave_points[0].loc).r @slave_points[0].notify_to_move orig_src, self, {:new_pos => params[:new_pos] + (distance * direction)} end end end
handle_slave(slave, orig_src, params)
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# File lib/core/constraint.rb, line 64 def handle_slave(slave, orig_src, params) if params.include? :new_pos other_slave = (@slave_points.select {|s| s!=slave})[0] direction = (params[:new_pos] - @master_point.loc).unit if @mirror_distance distance = (slave.loc - @master_point.loc).r else distance = (other_slave.loc - @master_point.loc).r end new_loc = @master_point.loc + (-1 * direction * distance) other_slave.notify_to_move orig_src, self, {:new_pos => new_loc} end end