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HTML

              
                
              
            
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CSS

              
                
              
            
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JS

              
                const frame = new Frame("fit", 800, 600);
frame.on("ready", ()=>{ // ES6 Arrow Function - similar to function(){}
    zog("ready from ZIM Frame"); // logs in console (F12 - choose console)

    // often need below - so consider it part of the template
    let stage = frame.stage;
    let stageW = frame.width;
    let stageH = frame.height;
    frame.outerColor = "#555";
    frame.color = "#EEE";

    // REFERENCES for ZIM at http://zimjs.com
    // see http://zimjs.com/learn.html for video and code tutorials
    // see http://zimjs.com/docs.html for documentation
    // see https://www.youtube.com/watch?v=pUjHFptXspM for INTRO to ZIM
    // see https://www.youtube.com/watch?v=v7OT0YrDWiY for INTRO to CODE

    // CODE HERE
    const squiggle = new Squiggle().center();
    squiggle.on("pressup", (e)=>{
			// find out if first and last points are hitting
			// pointObjects hold array of Display objects: 
			// [[control, circle, rect1, rect2, controlType], [etc.]]
			if (squiggle.pointObjects[0][1].hitTestCircles(squiggle.pointObjects[squiggle.num-1][1])) {
				// at this point we could make a Blob and set it to the points of the Squiggle 
				// new Blob({color:squiggle.color, points:squiggle.points}).pos(squiggle.x, squiggle.y, stage);
				// but the Blob would have two points where the end points meet - we just want one point
				// the new single point may have control sticks that are not straight 
				// so we need to combine the data taking the left (first) stick from the last point
				// and keeping the right (second) stick from the first point
				let points = copy(squiggle.points);
				// remove last point and record data
				let lastPoint = points.pop();
				
				// points holds array of data for our control objects:
				// [[controlX, controlY, circleX, circleY, rect1X, rect1Y, rect2X, rect2Y, controlType], [etc]]
				// set the data for the first stem of point 1 to the data of the first stem of the last point
				points[0][4] = lastPoint[4];
				points[0][5] = lastPoint[5];		
				// set the controlType to free
				points[0][8] = "free";
				// make a new Blob with the point data
				new Blob({color:squiggle.color, points:points}).pos(squiggle.x, squiggle.y, stage);
				squiggle.removeFrom();
				stage.update();
			}
		});   
	
		new Label("make a whale shape...").alp(.5).pos(50,50,stage);

    stage.update(); // this is needed to show any changes
  
    // DOCS FOR ITEMS USED
    // http://zimjs.com/docs.html?item=squiggle
    // http://zimjs.com/docs.html?item=blob
    // http://zimjs.com/docs.html?item=center
    // http://zimjs.com/docs.html?item=pos
    // http://zimjs.com/docs.html?item=removeFrom
    // http://zimjs.com/docs.html?item=label
    // http://zimjs.com/docs.html?item=alp
    // http://zimjs.com/docs.html?item=frame
  
    // FOOTER
    // call remote script to make ZIM Foundation for Creative Coding icon
    createIcon(frame); 

}); // end of ready
              
            
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999px

Console