208 lines
5.8 KiB
HTML
208 lines
5.8 KiB
HTML
<!DOCTYPE html>
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<html>
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<!-- ahhh -->
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<body style="margin: 0; overflow: hidden">
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<canvas
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id="myCanvas"
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width="10"
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height="10"
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style="display: block; box-sizing: border-box"
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>
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Your browser does not support the HTML5 canvas tag.</canvas
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>
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<script>
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let c = document.getElementById("myCanvas");
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let ctx = c.getContext("2d");
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ctx.canvas.width = window.innerWidth;
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ctx.canvas.height = window.innerHeight;
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let deg_per_sec = 30 / 5000;
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let time = 99999999;
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let fps = 60;
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let leafWidth = 120;
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let leafHeight = 60;
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centerX = ctx.canvas.width / 2;
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centerY = ctx.canvas.height / 2;
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rotation = 0; //was = j = angle
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currentFrame = 0; //was = i
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function render() {
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if (currentFrame < time / (1 / fps)) {
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setTimeout(() => {
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render();
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render_clear();
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// Draw_Phyllotaxis(rotation + 3.1);
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Draw_Phyllotaxis(rotation + 1.5);
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// Draw_Phyllotaxis(1.5);
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// console.log(rotation + 3.1)
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// Draw_Phyllotaxis(rotation/5000);
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// Draw_center(); //Debugging
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// DrawBorder();
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}, 1000 / fps);
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rotation += deg_per_sec / fps; // was = j = angle, now = rotation
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currentFrame += 1; // was = i
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}
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}
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render();
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function Draw_Phyllotaxis(angle) {
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// colour1 = [255, 170, 0];
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// colour2 = [255, 0, 221];
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colour1 = [45, 129, 252];
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colour2 = [252, 3, 98];
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var c = 24; //something to do with width. but not width
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for (let n = 0; n < 300; n += 1) {
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ncolour = LerpRGB(colour1, colour2, Math.cos(rad(n / 2)));
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let a = n * angle; //137.5;
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let r = c * Math.sqrt(n);
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let x = r * Math.cos(a) + centerX;
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let y = r * Math.sin(a) + centerY;
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drawEyelid(x, y);
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// ctx.beginPath();
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// ctx.arc(x, y, 8, 0, 2 * Math.PI);
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// ctx.fillStyle = colourToText(ncolour);
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// ctx.fill();
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}
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}
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function rad(degrees) {
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var pi = Math.PI;
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return degrees * (pi / 180);
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}
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function LerpRGB(a, b, t) {
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if (t < 0) {
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t *= -1;
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}
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var newColor = [0, 0, 0];
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newColor[0] = a[0] + (b[0] - a[0]) * t;
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newColor[1] = a[1] + (b[1] - a[1]) * t;
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newColor[2] = a[2] + (b[2] - a[2]) * t;
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return newColor;
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}
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function colourToText(colour) {
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return "rgb(" + colour[0] + "," + colour[1] + "," + colour[2] + ")";
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}
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function render_clear() {
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ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
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ctx.fillStyle = "black";
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ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
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}
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function drawEyelid(x1, y1) {
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x1 -= centerX;
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y1 -= centerY;
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let angle = Math.atan(y1 / x1);
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// if(angle >=Math.PI){
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// angle -=Math.PI
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// console.log("greater called")
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// }
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angle = Math.abs(angle);
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console.log(angle);
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let x2Old = 0 + leafWidth;
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let y2Old = 0;
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let x3Old = 0 + leafWidth / 2;
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let y3Old = 0 + leafHeight / 2;
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let x4Old = 0 + leafWidth / 2;
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let y4Old = 0 - leafHeight / 2;
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let x2 = x2Old * Math.cos(angle) - y2Old * Math.sin(angle);
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let y2 = x2Old * Math.sin(angle) + y2Old * Math.cos(angle);
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let x3 = x3Old * Math.cos(angle) - y3Old * Math.sin(angle);
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let y3 = x3Old * Math.sin(angle) + y3Old * Math.cos(angle);
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let x4 = x4Old * Math.cos(angle) - y4Old * Math.sin(angle);
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let y4 = x4Old * Math.sin(angle) + y4Old * Math.cos(angle);
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let oldx1 = x1;
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let oldy1 = y1;
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x1 += centerX; // +x2/2
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y1 += centerY; // +x2/2
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x2 += x1;
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y2 += y1;
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x3 += x1;
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y3 += y1;
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x4 += x1;
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y4 += y1;
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ctx.beginPath();
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ctx.moveTo(x1, y1);
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ctx.quadraticCurveTo(x3, y3, x2, y2);
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ctx.moveTo(x1, y1);
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ctx.quadraticCurveTo(x4, y4, x2, y2);
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ctx.fillStyle = "black";
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ctx.fill();
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ctx.lineWidth = 1;
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ctx.beginPath();
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ctx.moveTo(x1, y1);
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ctx.quadraticCurveTo(x3, y3, x2, y2);
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ctx.moveTo(x1, y1);
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ctx.quadraticCurveTo(x4, y4, x2, y2);
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ctx.strokeStyle = "orange";
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ctx.stroke();
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}
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function drawEyelid2(x1, y1) {
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x1 -= centerX;
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y1 -= centerY;
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let angle = Math.atan(y1 / x1);
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let localLeafCenterX = -(leafWidth * Math.cos(Math.PI - angle)) / 2;
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let localLeafCenterY = (leafWidth * Math.sin(Math.PI - angle)) / 2;
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let x2 = x1 - leafWidth * Math.cos(Math.PI - angle);
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let y2 = y1 + leafWidth * Math.sin(Math.PI - angle);
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let alpha = Math.atan(leafHeight / (leafWidth / 2));
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let x3 = x1 + localLeafCenterX + leafHeight * Math.sin(alpha);
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let y3 = y1 + localLeafCenterY - leafHeight * Math.cos(alpha);
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let x4 = x1 + localLeafCenterX - leafHeight * Math.sin(alpha);
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let y4 = y1 + localLeafCenterY + leafHeight * Math.cos(alpha);
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x1 += centerX;
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y1 += centerY;
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x2 += centerX;
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y2 += centerY;
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x3 += centerX;
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y3 += centerY;
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x4 += centerX;
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y4 += centerY;
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ctx.beginPath();
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ctx.moveTo(x1, y1);
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ctx.quadraticCurveTo(x3, y3, x2, y2);
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ctx.moveTo(x1, y1);
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ctx.quadraticCurveTo(x4, y4, x2, y2);
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ctx.fillStyle = "black";
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ctx.fill();
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ctx.lineWidth = 1;
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ctx.beginPath();
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ctx.moveTo(x1, y1);
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ctx.quadraticCurveTo(x3, y3, x2, y2);
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ctx.moveTo(x1, y1);
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ctx.quadraticCurveTo(x4, y4, x2, y2);
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ctx.strokeStyle = "orange";
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ctx.stroke();
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}
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</script>
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</body>
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</html>
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