Branch Assignment
Contents
Code to Investigate
LogoTurtle
class LogoTurtle attr_accessor :pen_color, :pen_width def initialize super @is_pen_down = true @pen_width = 0.005 @pen_color = Color::WHITE end def pen_up @is_pen_down = true end def pen_down @is_pen_down = false end def forward(amount) y = amount x = @pen_width if @is_pen_down glColor3f(@pen_color.red, @pen_color.green, @pen_color.blue) glBegin(GL_QUADS) glVertex2d(-x, 0.0) glVertex2d(-x, y) glVertex2d(x, y) glVertex2d(x, 0.0) glEnd() end glTranslatef(0,y,0) end def right(degrees) glRotatef(degrees, 0, 0, 1) end end
Flower Client
class Flower def initialize super @turtle = LogoTurtle.new end def render flower end private def square 4.times do @turtle.forward 0.5 @turtle.right 90 end end def flower 36.times do @turtle.right 10 square end end end
Code to Implement
OpenGLStackUtils
class OpenGLStackUtils def self.push_do_pop raise :not_yet_implemented end end
Branch
class Branch def branch(length, line_width_in_pixels, depth_remaining) raise :not_yet_implemented end end
Note: to produce the reference images the code below was used:
next_length = length * 0.5 next_line_width_in_pixels = line_width_in_pixels * 0.8
Note: the child branches are 1.0/3.0 from the beginning and the end.
Note: the child branches are rotated 30.0 degrees and -30.0 degrees.
Note: in the recursive case the child branches were drawn before the line at the current depth to allow the green to be beneath the brown.
Do NOT worry if your images are not exact matches of the reference images.
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max_depth: 0 | max_depth: 1 | max_depth: 2 | max_depth: 3 | max_depth: 4 | max_depth: 5 |