Jocelyn Lin - Problem Set #1
 
Part 1
p1.dbn 
paper 80
pen 23
line 0 60 40 100

Create a program to draw a carefully chosen one line on a paper of your choice.
 
Part 2
p2.dbn 
//part 2
//control 3 lines a=70, b=50, c=43
paper 20
pen 50
set g 43
line g (g+15) g (g-15)
line g g (15+g) (100-g)
line g g (g-15) (g-15)

Create a program that uses one variable as a means to control a set of 3 lines. Capture 3 instances of the graphic (A,B,C).
 
Part 3
p3.dbn 
paper 30
pen 40
repeat a 15 35
{
line a 35 a 50
}

Create a program to draw a single filled rectangle. Again, choose carefully.
 
Part 4
p4.dbn 
paper 0
pen 50
repeat a 75 90
{
   line 75 20 a 0
}

Create a program to draw a single filled triangle. Use your good judgement.
 
Part 5
p5.dbn 
paper 20
pen 80
repeat a 50 20
{
   set b (100-a)
   {
      line a b (100-a) b
   }
}

Think of all the ways you can draw a filled triangle, and choose one. Utilize the properties of the drawing method you choose, to create a single filled triangle.
 
Part 6
p6.dbn 
//anticipation
paper 0

set v 50
set h 20

set [h v] 30
set [(h+3) v] 100

set [(h+30) v] 30
set [(h+33) v] 100

set [(h+60) v] 30

Set 5 dots on a paper of your choice. Evoke an emotion with your choice in placement of dots.
 
Part 7
p7.dbn 
//kissy fish
paper 90

//head
repeat f 1 6
{
set [(80+(2*f)) (85-(2*f))] 10
set [(80+(2*f)) (65+(2*f))] 10
}
//body
repeat f 1 15
{
set [(50+(2*f)) (70+f)] (70-(f*4))
set [(50+(2*f)) (80-f)] (70-(f*4))
}

Create a representational picture (i.e. something that looks like something) using just 8 (at maximum) dotted lines.
 
Part 8
p8.dbn 
//dawn
paper 80
repeat a 0 20
{
   repeat b 0 15
   {
      set [((a*a)-(b*b)) (b*7)] ((a+b)*2)
      //set [((a*a)-(b*b)-(a*b)) (b*3)] ((a+b)*2)
   }
}

Using a nested loop, fill the entire field with the value of some calculation that can be appreciated. Do not use the Line command.
 
Part 9
p9.dbn 
paper 100
repeat a 0 25
{
   repeat b 0 20
   {
      //set c ((a*a)-(b*b))
      set [(a*2)(100-(b*3))] ((a*a)-(b*b))
      set [(a*4)(b*5)] ((a*a)-(b*b))
      set [(100-(a*3))(b*4)] ((a*a)-(b*b))    
   }
}

Using a nested loop, create a stippled pattern of dots that can be enjoyed for its complexity. Do not use the Line command.
 
Part 10
p10.dbn 
//fan
paper 100
set h 30
set v 25
repeat r 1 8
{
   repeat a h (h+20)
   {
      pen ((a-25)*2+(r*4))
      line h v ((r*4)+a) (100-(5*r))
   }
}

Using the Line command, and a (few) nested loop, create an image that evokes a three-dimensional feeling through shading.