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Program Data

Program thumbnail for "{props.program.title}"

Title	curveVertex(x,y)
ID	4922655547326464
Created	Unknown
Updated	5 years ago, 1560378524512
Code	/** * curveVertex(x,y) * * Left-click on the screen to add a point * * Left-click and drag an existing point * * Right-click on a point to delete it * * Press Control to constrain to multiples of 10 * * Troy Cook / var renameThis = "function(x,y,sx,sy,r,fc,sc,sw){\n / Created with https://www.khanacademy.org/cs/curvevertexxy/4922655547326464 by Troy Cook /\n pushMatrix();\n pushStyle();\n translate(x,y);\n scale(sx,sy);\n rotate(r);\n fill(fc);\n stroke(sc);\n strokeWeight(sw);\n beginShape();\n //\n endShape();\n popStyle();\n popMatrix();\n};"; var genCode = function(t){ var f = "var renameThis = "+renameThis+"\nrenameThis(200,200,0.5,0.5,0,0xFF0000FF,0xFF000000,4);\n/ Copy the above code and paste it into your program /\n/ Change renameThis to a meaningful name /\n/ Remove the X and AAAAAAAAA if they appear /"; var c = f.indexOf("//"); f = f.substr(0,c) + t + f.substr(c,f.length); return f; }; var p = function(x,y,r,c){ this.x=x; this.y=y; this.r=r; this.c=c; this.pressed = function(x,y){ if (dist(x,y,this.x,this.y)<=this.r){ return true; } return false; }; this.dragged = function(x,y){ this.x = x; this.y = y; }; this.draw = function() { noFill(); stroke(this.c); ellipse(this.x,this.y,this.r,this.r); fill(this.c); var tah = (this.x>0)?LEFT:RIGHT; var tx = (this.x>0)?this.x+this.r/2:this.x-this.r/2; var tav = (this.y>0)?TOP:BOTTOM; var ty = (this.y>0)?this.y+this.r/2:this.y-this.r/2; textAlign(tah,tav); textSize(12); text("x:"+this.x+"\ny:"+this.y,tx,ty); }; }; var shapeObj = function(){ this.pa = []; this.pa.push( new p(-30,-100,20,0xFF000088)); this.pa.push( new p(100,-30,20,0xFF000088)); this.pa.push( new p(30,100,20,0xFF000088)); this.pa.push( new p(-100,30,20,0xFF000088)); this.po = ""; // pressed object this.fc = true; this.draw = function() { var pa = this.pa; stroke(0); strokeWeight(2); if (this.fc){ fill(163, 215, 247); } else { noFill(); } this.t = ""; pushMatrix(); translate(200,200); beginShape(); // loop through all vertices then repeat // the first three to close the shape for (var i = 0; i<pa.length+3; i++){ var im = i%pa.length; this.t += "curveVertex("+pa[im].x+","+pa[im].y+"); "; curveVertex(pa[im].x,pa[im].y); } endShape(); // draw circles and labels for (var i in pa){ pa[i].draw(); } popMatrix(); }; this.pressed = function(x,y){ var pa = this.pa; for (var i in pa){ if (pa[i].pressed(x,y)){ if (mouseButton === RIGHT){ // right click deletes a point pa.splice(i,1); return; } // left click selects a point this.po = pa[i]; return; } } // find index in the middle of two points var ih = 0; for (var i =0; i<pa.length; i++){ ih = (i + 1)%pa.length; var xl = min(pa[i].x,pa[ih].x)-15; var xh = max(pa[i].x,pa[ih].x)+15; var yl = min(pa[i].y,pa[ih].y)-15; var yh = max(pa[i].y,pa[ih].y)+15; if (x>=xl && x<=xh && y>=yl && y<=yh){ break; } } if (mouseButton === LEFT){ // add a new point splice(pa, new p(x,y,20,0xFF000088),ih); this.po = null; } }; this.dragged = function(x,y){ // left-click drag moves a point if (this.po !== undefined){ this.po.dragged(x,y); } }; }; var b = new shapeObj(); draw = function() { background(198, 247, 245); b.draw(); text("Press G to generate the code...",200,380); }; keyPressed = function(){ if (keyCode === 71){ println(genCode(b.t)); return; } }; mousePressed = function(){ b.pressed(mouseX-200,mouseY-200); }; mouseDragged = function(){ var x = mouseX-200; var y = mouseY-200; if (keyIsPressed && keyCode === CONTROL){ var x = round(x/10)10; var y = round(y/10)*10; } b.dragged(x,y); };
Folds
Fork	false
Key	ag5zfmtoYW4tYWNhZGVteXIXCxIKU2NyYXRjaHBhZBiAgID6kKTfCAw
Votes	980
Spin-Offs	105
Type
Width	400
Height	400
User Flagged	false
Origin Scratchpad	{"id":"4591603024920576","title":"bezier(bx,by,cx,cy,dx,dy,ex,ey)","deleted":"false","official":"false"}
Hidden From Hotlist	false
Restricted Posting	true
By Child	false
Author Nick	Troy Cook
Author Name	onetruetroy
Author ID	kaid_1050040908180717789041673
Author Profile Access	COACH

Archive Data

Added	1 years ago, 1707881057052
Updated	1 years ago, 1707883441877
Source Deleted	unknown