ij-macro-programming-workshop

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Exercise 12.02 - Define a macro set with keyboard shortcuts for each macro

Aim:

• learn how to define macro sets.

Write a macro set that contains the following macros and a keyboard shortcut for each of the macros:

• the macro new image with the shortcut n creates a new image
• the macro initialize turtle with the shortcut i initializes the turtle
• the macro spiral with the shotcut s draws the spiral with a fixed set of parameters
• the macro dragon with the shotcut d draws the dragon curve with a fixed set of parameters
• the macro my curve with the shortcut m draws the recursive curve you defined in exercise 11.4

Install the macros and use the keyboard shotcuts to run them. To install the macros copy the content of the file into the Text-Editor that you can open from Plugins>New>Text Window... and use the menu Macros>Install Macros of this editor. When installed they will appear under Plugins>Macros

var _X = 0;
var _Y = 0;
var _ANGLE = 0;
var _RADIUS = 20;
var _DELAY = 20;

Your code starts after this line

Your code ends before this line

function initializeTurtle() {
	_X = getWidth() / 2;
	_Y = getHeight() / 2;
	moveTo(_X, _Y);
	makeOval(_X - (_RADIUS / 2), _Y - (_RADIUS / 2), _RADIUS, _RADIUS);
	Roi.setFillColor("green");
}

function forward(step) {
	_X += step * cos(_ANGLE * PI / 180);
	_Y += step * sin(_ANGLE * PI / 180);
	lineTo(_X, _Y);
	Roi.move(_X - (_RADIUS / 2), _Y - (_RADIUS / 2));
	wait(_DELAY);
}

function right(delta) {
	_ANGLE += delta % 360;
}

function left(delta) {
	_ANGLE -= delta % 360;
}

function spiral(side, angle, inc, count) {
	forward(side);
	right(angle);
	if (count>0) spiral(side, angle + inc, inc, count-1);
}

function dragon(size, sign, level) {
	if (level==0) forward(size);
	else {
		dragon(size, 1, level - 1);
		left(90 * sign);
		dragon(size, -1, level - 1);
	}
}

function myCurve(side, step) {
// Your code starts after this line
// Your code ends before this line
}

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