tina.invertTriangles(256, 1);
tina.invertTriangles(256, 2);
tina.invertTriangles(256, 3);
tina.invertTriangles(256, 4);
InvertedTrianglesWorld, InvertedTriangleTurtles
draw patterns of inverted equilateral triangles. We can specify the initial
size of the triangle (ie the length of one side) and the number
of triangles to draw.
When we create an InvertedTriangleTurtle tina,
she starts at a specific place with her pen down and facing the right.
If we ask her to draw fewer than one triangle, she does nothing.
The first triangle she draws has its left bottom corner where she starts.
Regardless of the number of triangles she draws,
tina stands in her initial position facing her initial direction
when she is finished. The following pictures illustrate the result from asking
tina to draw different numbers of triangles.
tina.invertTriangles(256, 1);
|
tina.invertTriangles(256, 2);
|
tina.invertTriangles(256, 3);
|
tina.invertTriangles(256, 4);
|
Our task is to fill in the code for the invertTriangles
method in the InvertedTriangleTurtle class. The following
skeleton is provided for us.
public void invertTriangles (double size, int number) {
System.out.println("invertTriangles("+size+", "+number+");");
// add your code here
}
InvertedTriangleTurtle class. We should not need to modify
the InvertedTrianglesWorld class in order for our code to work.
However, we may modify it during testing.