// Helene Martin, CSE 142
// Draws several triangles and the length of their sides.
import java.awt.*;

public class Triangles {
	public static void main(String[] args) {
		DrawingPanel p = new DrawingPanel(400, 400);
		Graphics g = p.getGraphics();
		
		printTriangleFacts(40, 50);
		printTriangleFacts(40, 85);
		
		drawTriangle(g, 20, 20, 40, 60);
		drawTriangle(g, 200, 140, 40, 85);
	}
	
	// Draws a right triangle with upper left corner at (x, y), width
	// of width and height of height.
	// The length of each side is in its middle.
	public static void drawTriangle(Graphics g, int x, int y, int width, int height) {
		g.setColor(Color.RED);
		g.drawLine(x, y, x, y + height);
		g.drawString(height + "", x, y + height / 2);
		
		g.setColor(Color.GREEN);
		g.drawLine(x, y + height, x + width, y + height);
		g.drawString(width + "", x + width / 2, y + height);
		
		g.setColor(Color.BLUE);
		g.drawLine(x, y, x + width, y + height);
		double hyp = hypotenuse(width, height);;
		g.drawString(round2(hyp, 2) + "", x + width / 2, y + height / 2);
	}
	
	// Returns the length of the hypotenuse of a right triangle with sides
	// width and height
	public static double hypotenuse(int width, int height) {
		return Math.sqrt(Math.pow(width, 2) + Math.pow(height, 2));	
	}
	
	// Calculates and displays right triangle facts
	public static void printTriangleFacts(int width, int height) {
		System.out.println("Right triangle facts:");
		System.out.println("\twidth: " + width);
		System.out.println("\theight: " + height);
		double hypotenuse = hypotenuse(width, height);
		System.out.println("\thypotenuse: " + hypotenuse);
	}
	
	// Returns value rounded to places places
	public static double round2(double value, int places) {
		double rounded = Math.round(value * Math.pow(10, places)) / Math.pow(10, places);
		return rounded;
	}
}