adding the animation directory
This commit is contained in:
Jidong Xiao
286
animations/pointers/example1/example1.js
Normal file
286
animations/pointers/example1/example1.js
Normal file
@@ -0,0 +1,286 @@
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// Author: Jidong Xiao
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// first we need to create a stage
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var stage = new Konva.Stage({
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container: 'container', // id of container <div>
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width: 2000,
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height: 1000
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});
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var count=0;
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// then create layer
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var layer = new Konva.Layer();
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function makeText(x,y,str,id) {
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let text = new Konva.Text({
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x: x,
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y: y,
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text: str,
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id: 'prog'+id,
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fontSize: 18,
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fontFamily: 'Calibri',
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fill: '#000000',
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width: 400,
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padding: 20,
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// align: 'center',
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});
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layer.add(text);
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}
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function makeContent(x,y,str,id) {
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let text = new Konva.Text({
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x: x,
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y: y,
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text: str,
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id: 'cont_'+id,
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fontSize: 18,
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fontFamily: 'Calibri',
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fill: '#900C3F',
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width: 400,
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padding: 20,
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});
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layer.add(text);
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}
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function makeMemory(xstart,ystart,bufferSize,w,h) {
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for(let i=0;i<bufferSize;i++){
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let tr = new Konva.Rect({
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x: xstart,
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y: ystart+i*h,
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id:"brec"+i,
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stroke: '#343434',
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strokeWidth: 5,
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fill: '#ddd',
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width: w,
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height: h,
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shadowColor: 'black',
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shadowBlur: 10,
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shadowOffsetX: 10,
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shadowOffsetY: 10,
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shadowOpacity: 0.2,
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});
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layer.add(tr);
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} // end of for loop
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}
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makeMemory(800,0,6,200,100);
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makeText(800+350, -20, "0x1000", "addr0");
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makeText(800+350, 80, "0x1008", "addr2");
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makeText(800+350, 180, "0x1010", "addr3");
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makeText(800+350, 280, "0x1018", "addr4");
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makeText(800+350, 380, "0x1020", "addr5");
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makeText(800+350, 480, "0x1028", "addr6");
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var rect1 = new Konva.Rect({
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x: 20,
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y: 60,
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id:"prec1",
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stroke: '#555',
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strokeWidth: 5,
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fill: '#ddd',
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width: 400,
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height: 220,
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shadowColor: 'black',
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shadowBlur: 10,
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shadowOffsetX: 10,
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shadowOffsetY: 10,
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shadowOpacity: 0.2,
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cornerRadius: 10,
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});
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var rect2 = new Konva.Rect({
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x: 20,
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y: 370,
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id:"console",
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stroke: '#555',
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strokeWidth: 5,
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fill: '#ddd',
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width: 400,
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height: 220,
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shadowColor: 'black',
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shadowBlur: 10,
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shadowOffsetX: 10,
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shadowOffsetY: 10,
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shadowOpacity: 0.2,
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cornerRadius: 10,
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});
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var memoryText = new Konva.Text({
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x: 830,
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y: 635,
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id:"memory",
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text: "Memory",
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fontSize: 28,
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fontFamily: 'Calibri',
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fill: '#000000',
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});
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var codeLabel = new Konva.Text({
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x: 150,
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y: 305,
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id:"code",
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text: "Code",
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fontSize: 28,
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fontFamily: 'Calibri',
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fill: '#000000',
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});
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var consoleLabel = new Konva.Text({
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x: 130,
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y: 635,
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id:"console",
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text: "Console",
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fontSize: 28,
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fontFamily: 'Calibri',
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fill: '#000000',
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});
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var consoleText = new Konva.Text({
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x: 60,
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y: 400,
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id:"console_text",
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text: "$",
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fontSize: 28,
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fontFamily: 'Calibri',
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fill: '#581845',
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});
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var arrowLeft1 = new Konva.Arrow({
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points: [925, 250, 1100, 200, 1005, 150],
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tension: 0.5,
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pointerLength: 10,
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pointerWidth: 10,
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id: "arrowright1",
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fill: 'green',
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stroke: 'green',
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strokeWidth: 5,
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});
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// box for code
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layer.add(rect1);
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// box for console
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layer.add(rect2);
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layer.add(memoryText);
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layer.add(consoleLabel);
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layer.add(codeLabel);
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layer.add(consoleText);
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function makeCode(x,y,str,id) {
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return new Konva.Text({
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x: x,
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y: y,
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text: str,
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id: 'line'+id,
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fontSize: 18,
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fontFamily: 'Calibri',
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fill: '#000000',
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width: 400,
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padding: 20,
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});
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}
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// hard code here, we assume we only have 8 lines of code.
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function makeBold(id){
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for(let i=1;i<=8;i++){
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if(i!=id){
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stage.find('#line'+i).fontStyle('normal');
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}else{
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stage.find('#line'+id).fontStyle('bold');
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}
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}
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}
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var code=["1. float x = 15.5;",
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"2. float *p;",
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"3. p = &x;",
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"4. *p = 72; ",
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"5. if (x > 20 )",
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"6. \t\t cout << \"Bigger\\n\";",
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"7. else",
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"8. \t\t cout << \"Smaller\\n\"; "];
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for (let i=0;i<code.length;i++){
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// the array starts from index 0, but we want ids to be counted from index 1.
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let t=makeCode(20,80+(i*20),code[i],i+1);
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layer.add(t);
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}
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// defining the message box
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var msg_box = new Konva.Rect({
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x: 900,
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y: 100,
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id:"message_box",
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stroke: '#ffa07a',
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strokeWidth: 5,
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fill: '#ddd',
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width: 400,
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height: 200,
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shadowColor: 'black',
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shadowBlur: 10,
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shadowOffsetX: 10,
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shadowOffsetY: 10,
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shadowOpacity: 0.2,
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cornerRadius: 10,
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});
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// layer.add(msg_box);
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// add the layer to the stage
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stage.add(layer);
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// draw the image
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layer.draw();
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//t=makeContent(850,220,"0x8",'value2');
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//layer.add(t);
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var pc=1;
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function nextstep() {
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if(pc == 1){
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makeBold(pc);
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makeText(650,120,"float x",'x');
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// this has to be after makeMemory so that the memory doesn't overwrite this.
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makeContent(850,120,"15.5",'value1');
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/* update last occurrence of c */
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// stage.find('#text_c').text("0");
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/* highlight the box for c */
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//stage.find('#lastseenbuf_2').fill("#5f9ea0");
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layer.draw();
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pc=pc+1;
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}else if(pc == 2){
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makeBold(pc);
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makeText(650,220,"float *p",'p');
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// at first, it's just garbage.
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makeContent(850,220,"\ \ \ ?",'value2');
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layer.draw();
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pc=pc+1;
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}else if(pc == 3){
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makeBold(pc);
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// p takes the address of x.
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stage.find('#cont_value2').text('0x1008');
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// add the arrow here.
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layer.add(arrowLeft1);
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layer.draw();
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pc=pc+1;
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}else if(pc == 4){
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makeBold(pc);
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stage.find('#cont_value1').text('72.0');
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layer.draw();
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pc=pc+1;
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}else if(pc == 5){
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makeBold(pc);
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layer.draw();
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pc=pc+1;
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}else if(pc == 6){
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makeBold(pc);
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stage.find('#console_text').text('$ Bigger');
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layer.draw();
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pc=pc+1;
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}else if(pc == 7){
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alert("End of animation! Refresh the page if you want to re-run the animation.");
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}
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}
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/* vim: set ts=4: */
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