adding the animation directory
This commit is contained in:
Jidong Xiao
492
animations/dynamic_memory/example1/example1.js
Normal file
492
animations/dynamic_memory/example1/example1.js
Normal file
@@ -0,0 +1,492 @@
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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: 'text_'+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 content = 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: 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(content);
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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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// create stack
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makeMemory(750,100,6,200,100);
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makeText(750+250, 175, "0x1014", "addr0");
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makeText(750+250, 275, "0x1010", "addr1");
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makeText(750+250, 375, "0x100C", "addr2");
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makeText(750+250, 475, "0x1008", "addr3");
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makeText(750+250, 575, "0x1004", "addr4");
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makeText(750+250, 675, "0x1000", "addr5");
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function makeHeap(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:"hrec_"+i, // heap rectangle
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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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// create heap
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makeHeap(1200,100,6,200,100);
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makeText(750+690, 80, "0x0218", "haddr0");
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makeText(750+690, 180, "0x0214", "haddr1");
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makeText(750+690, 280, "0x0210", "haddr2");
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makeText(750+690, 380, "0x020C", "haddr3");
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makeText(750+690, 480, "0x0208", "haddr4");
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makeText(750+690, 580, "0x0204", "haddr5");
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// the code rectangle.
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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:"code_rec1",
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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: 320,
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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: 470,
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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 rect3 = new Konva.Rect({
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x: 1450,
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y: 650,
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id:"legend_box",
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stroke: '#555',
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strokeWidth: 5,
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fill: '#ffffff',
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width: 250,
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height: 150,
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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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function makeLegendBox(xstart,ystart,color){
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var rect = new Konva.Rect({
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x: xstart,
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y: ystart,
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id:"legend_box",
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stroke: '#555',
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strokeWidth: 5,
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fill: color,
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width: 40,
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height: 25,
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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(rect);
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}
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var stackText = new Konva.Text({
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x: 820,
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y: 35,
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id:"stack",
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text: "Stack",
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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 heapText = new Konva.Text({
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x: 1270,
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y: 35,
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id:"heap",
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text: "Heap",
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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: 405,
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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: 735,
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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 arrow1 = new Konva.Arrow({
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points: [880, 148, 1200, 395],
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tension: 0.5,
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pointerLength: 10,
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pointerWidth: 10,
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id: "arrow1",
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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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var arrow2 = new Konva.Arrow({
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points: [880, 248, 1200, 595],
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tension: 0.5,
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pointerLength: 10,
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pointerWidth: 10,
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id: "arrow2",
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fill: 'yellow',
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stroke: 'yellow',
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strokeWidth: 5,
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});
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var arrow3 = new Konva.Arrow({
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points: [880, 348, 1200, 595],
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tension: 0.5,
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pointerLength: 10,
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pointerWidth: 10,
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id: "arrow3",
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fill: 'red',
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stroke: 'red',
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strokeWidth: 5,
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});
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/* for the arrow */
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var arrowarray2 = [880, 248, 1200, 595];
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// move arrow 2 up
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function moveArrowUp(){
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arrowarray2[3] = arrowarray2[3] - 200;
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stage.find('#arrow2').points(arrowarray2);
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}
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var arrowarray1 = [880, 148, 1200, 395];
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// move arrow 1 down
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function moveArrowDown(){
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arrowarray1[3] = arrowarray1[3] + 200;
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stage.find('#arrow1').points(arrowarray1);
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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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// box for legend
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layer.add(rect3);
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// legend
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makeText(750+690, 650, "legend (for heap)", "legend");
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makeText(1490, 695, "memory not allocated", "free");
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makeText(1490, 735, "memory allocated", "allocated");
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makeLegendBox(1460, 715, '#ddd');
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makeLegendBox(1460, 760, '#ecbeb4');
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layer.add(stackText);
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layer.add(heapText);
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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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var code=["1. int * p = new int;",
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"2. *p = 17;",
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"3. cout << *p << endl;",
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"4. int * q;",
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"5. q = new int;",
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"6. *q = *p;",
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"7. *p = 27;",
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"8. cout << *p << \" \" << *q << endl;",
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"9. int * temp = q;",
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"10. q = p;",
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"11. p = temp;",
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"12. cout << *p << \" \" << *q << endl;",
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"13. delete p;",
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"14. delete q;",
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];
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function makeBold(id){
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for(let i=1; i<=code.length; 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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// write the code fragment into the code box.
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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(20,60+(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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var message=["$",
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"",
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"",
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""];
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function updateMessage(msg,i) {
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stage.find('#text_msg'+i).text(msg);
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}
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// draw that $ sign, which is a command line prompt.
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makeText(60,480,message[0],'msg0');
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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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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,"int * p",'p');
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makeText(1120,320,"int",'p_heap');
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// changing color to mark it as allocated
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stage.find('#hrec_2').fill('#ecbeb4');
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// this has to be after makeMemory so that the memory doesn't overwrite this.
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makeContent(800,120,"0x020C",'p_value');
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makeContent(1280,320,"?",'p_heap_value');
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// add the arrow here.
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layer.add(arrow1);
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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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stage.find('#p_heap_value').text('17');
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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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updateMessage("$ 17",0);
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makeText(60,500,message[1],'msg1');
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updateMessage("$ ",1);
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makeText(60,520,message[2],'msg2');
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makeText(60,540,message[3],'msg3');
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// stage.find('#console_text').text('$ 10 15');
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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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makeText(650,220,"int * q",'q');
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makeContent(800,220,"\t\t\t\t?",'q_value');
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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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makeText(1120,520,"int",'q_heap');
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// changing color to mark it as allocated
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stage.find('#hrec_4').fill('#ecbeb4');
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stage.find('#q_value').text('0x0204');
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makeContent(1280,520,"?",'q_heap_value');
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// add the second arrow here.
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layer.add(arrow2);
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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('#q_heap_value').text('17');
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// stage.find('#console_text').text('$ 150 15');
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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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makeBold(pc);
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stage.find('#p_heap_value').text('27');
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layer.draw();
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pc=pc+1;
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}else if(pc == 8){
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makeBold(pc);
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updateMessage("$ 27 17",1);
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updateMessage("$ ",2);
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layer.draw();
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pc=pc+1;
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}else if(pc == 9){
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makeBold(pc);
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makeText(650,320,"int * temp",'temp');
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makeContent(800,320,"0x0204",'temp_value');
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// add the 3rd arrow here.
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layer.add(arrow3);
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layer.draw();
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pc=pc+1;
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}else if(pc == 10){
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makeBold(pc);
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stage.find('#q_value').text('0x020C');
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moveArrowUp();
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layer.draw();
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pc=pc+1;
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}else if(pc == 11){
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makeBold(pc);
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stage.find('#p_value').text('0x0204');
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moveArrowDown();
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layer.draw();
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pc=pc+1;
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}else if(pc == 12){
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makeBold(pc);
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updateMessage("$ 17 27",2);
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updateMessage("$ ",3);
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layer.draw();
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pc=pc+1;
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}else if(pc == 13){
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makeBold(pc);
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// changing color to mark it as reclaimed
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stage.find('#hrec_4').fill('#ddd');
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stage.find('#text_q_heap').text('');
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layer.draw();
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pc=pc+1;
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}else if(pc == 14){
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makeBold(pc);
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// changing color to mark it as reclaimed
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stage.find('#hrec_2').fill('#ddd');
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stage.find('#text_p_heap').text('');
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layer.draw();
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pc=pc+1;
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}else if(pc == 15){
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alert("End of animation! Refresh the page if you want to re-run the animation.");
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pc=pc+1;
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}
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}
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/* vim: set ts=4: */
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