This commit is contained in:
Sam 2023-01-09 23:05:23 +13:00
parent 1398e866c3
commit 483744ea36
6 changed files with 436 additions and 4 deletions

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@ -28,7 +28,7 @@
render();
render_clear();
Draw_Spiral_Pattern(3, 200, rotation, centerX, centerY, 'red')
Draw_Spiral_Pattern(40, 200, rotation, centerX, centerY, 'red')
}, 1000 / fps);
rotation += deg_per_sec / fps; // was = j = angle, now = rotation

217
Catalogue/floralPhyllo.html Normal file
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@ -0,0 +1,217 @@
<!DOCTYPE html>
<html>
<!-- ahhh -->
<body style="margin: 0; overflow: hidden">
<canvas
id="myCanvas"
width="10"
height="10"
style="display: block; box-sizing: border-box"
>
Your browser does not support the HTML5 canvas tag.</canvas
>
<script>
let c = document.getElementById("myCanvas");
let ctx = c.getContext("2d");
ctx.canvas.width = window.innerWidth;
ctx.canvas.height = window.innerHeight;
//increase deg_per_sec to rotation speed
let deg_per_sec = 1 /// 200;
let time = 99999999; //set this to stop the animation after x seconds (stops it running in background)
let fps = 60;
let leafWidth = 200; //leaf height is just half width
// let leafHeight = 100;
centerX = ctx.canvas.width / 2;
centerY = ctx.canvas.height / 2;
rotation = 0; //was = j = angle
currentFrame = 0; //was = i
let colour1 = [45, 129, 252];
// let colour2 = [0, 0, 0];
let colour2 = [252, 3, 98];
let lerpedColours = [];
//270 specifically bc of Math.cos(i/1.5)
//e.g. 360 would be Math.cos(i)
//just so the colours loop back
for (let i = 0; i < 270; i++) {
let ncolour = LerpRGB(colour1, colour2, Math.cos(rad(i/1.5)));
lerpedColours.push(colourToText(ncolour))
}
console.log(lerpedColours)
function render() {
if (currentFrame < time / (1 / fps)) {
setTimeout(() => {
render();
render_clear();
Draw_Phyllotaxis(Math.PI/4);
// Draw_Phyllotaxis(rotation + 4.8);
// Draw_Phyllotaxis(rotation + 1.5);
// Draw_Phyllotaxis(1.5);
// Draw_center(50); //Debugging
//just moving the last colour to the start, makes the gradient flow
//through all the items
lerpedColours.unshift(lerpedColours[lerpedColours.length-1])
lerpedColours.pop()
}, 1000 / fps);
rotation += deg_per_sec / fps; // was = j = angle, now = rotation
currentFrame += 1; // was = i
}
}
render();
function Draw_Phyllotaxis(angle) {
// var c = 24; //something to do with width. but not width
var c = 1; //something to do with width. but not width
//dont make larger than 270 unless altering the number of colours in lerpedColours
for (let n = 200; n > 0; n -= 1) {
let a = n * angle; //137.5;
let r = c * Math.sqrt(n);
let x = r * Math.cos(a) + centerX;
let y = r * Math.sin(a) + centerY;
drawEyelid(n * 2.4 + 40, x, y, lerpedColours[n]);
}
}
function rad(degrees) {
var pi = Math.PI;
return degrees * (pi / 180);
}
function LerpRGB(a, b, t) {
if (t < 0) {
t *= -1;
}
var newColor = [0, 0, 0];
newColor[0] = a[0] + (b[0] - a[0]) * t;
newColor[1] = a[1] + (b[1] - a[1]) * t;
newColor[2] = a[2] + (b[2] - a[2]) * t;
return newColor;
}
function colourToText(colour) {
return "rgb(" + colour[0] + "," + colour[1] + "," + colour[2] + ")";
}
function render_clear() {
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
ctx.fillStyle = "black";
ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
}
function drawEyelid(width, x1, y1, colour) {
x1 -= centerX;
y1 -= centerY;
let angle = Math.atan2(y1, x1);
let cosAngle = Math.cos(angle);
let sinAngle = Math.sin(angle);
let x2Old = 0 + width;
let y2Old = 0;
let x3Old = 0 + width / 2;
let y3Old = 0 + width / 2;
let x4Old = 0 + width / 2;
let y4Old = 0 - width / 2;
let x2 = cosAngle * width;
let y2 = sinAngle * width;
let x3 = x3Old * cosAngle - y3Old * sinAngle;
let y3 = x3Old * sinAngle + y3Old * cosAngle;
let x4 = x4Old * cosAngle - y4Old * sinAngle;
let y4 = x4Old * sinAngle + y4Old * cosAngle;
x1 += centerX;
y1 += centerY;
x2 += x1;
y2 += y1;
x3 += x1;
y3 += y1;
x4 += x1;
y4 += y1;
ctx.beginPath();
ctx.moveTo(x1, y1);
ctx.quadraticCurveTo(x3, y3, x2, y2);
ctx.moveTo(x1, y1);
ctx.quadraticCurveTo(x4, y4, x2, y2);
ctx.fillStyle = colour;
ctx.fill();
ctx.lineWidth = 2;
ctx.strokeStyle = "black";
ctx.stroke();
}
function drawEyelid2(x1, y1) {
x1 -= centerX;
y1 -= centerY;
let angle = Math.atan(y1 / x1);
let localLeafCenterX = -(leafWidth * Math.cos(Math.PI - angle)) / 2;
let localLeafCenterY = (leafWidth * Math.sin(Math.PI - angle)) / 2;
let x2 = x1 - leafWidth * Math.cos(Math.PI - angle);
let y2 = y1 + leafWidth * Math.sin(Math.PI - angle);
let alpha = Math.atan(leafHeight / (leafWidth / 2));
let x3 = x1 + localLeafCenterX + leafHeight * Math.sin(alpha);
let y3 = y1 + localLeafCenterY - leafHeight * Math.cos(alpha);
let x4 = x1 + localLeafCenterX - leafHeight * Math.sin(alpha);
let y4 = y1 + localLeafCenterY + leafHeight * Math.cos(alpha);
x1 += centerX;
y1 += centerY;
x2 += centerX;
y2 += centerY;
x3 += centerX;
y3 += centerY;
x4 += centerX;
y4 += centerY;
ctx.beginPath();
ctx.moveTo(x1, y1);
ctx.quadraticCurveTo(x3, y3, x2, y2);
ctx.moveTo(x1, y1);
ctx.quadraticCurveTo(x4, y4, x2, y2);
ctx.fillStyle = "black";
ctx.fill();
ctx.lineWidth = 1;
ctx.beginPath();
ctx.moveTo(x1, y1);
ctx.quadraticCurveTo(x3, y3, x2, y2);
ctx.moveTo(x1, y1);
ctx.quadraticCurveTo(x4, y4, x2, y2);
ctx.strokeStyle = "orange";
ctx.stroke();
}
function Draw_center(width) {
ctx.beginPath();
ctx.moveTo(centerX - width / 2, centerY);
ctx.lineTo(centerX + width / 2, centerY);
ctx.moveTo(centerX, centerY - width / 2);
ctx.lineTo(centerX, centerY + width / 2);
ctx.strokeStyle = "pink";
ctx.lineWidth = 2;
ctx.stroke();
}
</script>
</body>
</html>

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@ -0,0 +1,213 @@
<!DOCTYPE html>
<html>
<!-- ahhh -->
<body style="margin:0;overflow: hidden;">
<canvas id="myCanvas" width="10" height="10" style="display: block;box-sizing: border-box;">
Your browser does not support the HTML5 canvas tag.</canvas>
<script>
let c = document.getElementById("myCanvas");
let ctx = c.getContext("2d");
ctx.canvas.width = window.innerWidth;
ctx.canvas.height = window.innerHeight;
let deg_per_sec = 30 / 5000;
let time = 99999999;
let fps = 60;
let leafWidth = 120;
let leafHeight = 60;
centerX = ctx.canvas.width / 2;
centerY = ctx.canvas.height / 2;
rotation = 0; //was = j = angle
currentFrame = 0; //was = i
function render() {
if (currentFrame < time / (1 / fps)) {
setTimeout(() => {
render();
render_clear();
// Draw_Phyllotaxis(rotation + 3.1);
Draw_Phyllotaxis(rotation + 1.5);
// Draw_Phyllotaxis(1.5);
// console.log(rotation + 3.1)
// Draw_Phyllotaxis(rotation/5000);
// Draw_center(); //Debugging
// DrawBorder();
}, 1000 / fps);
rotation += deg_per_sec / fps; // was = j = angle, now = rotation
currentFrame += 1; // was = i
}
}
render();
function Draw_Phyllotaxis(angle) {
// colour1 = [255, 170, 0];
// colour2 = [255, 0, 221];
colour1 = [45, 129, 252];
colour2 = [252, 3, 98];
var c = 24; //something to do with width. but not width
for (let n = 0; n < 300; n += 1) {
ncolour = LerpRGB(colour1, colour2, Math.cos(rad(n / 2)));
let a = n * (angle)//137.5;
let r = c * Math.sqrt(n);
let x = r * Math.cos(a) + centerX;
let y = r * Math.sin(a) + centerY;
drawEyelid(x, y);
// ctx.beginPath();
// ctx.arc(x, y, 8, 0, 2 * Math.PI);
// ctx.fillStyle = colourToText(ncolour);
// ctx.fill();
}
}
function rad(degrees) {
var pi = Math.PI;
return degrees * (pi / 180);
}
function LerpRGB(a, b, t) {
if (t < 0) {
t *= -1;
}
var newColor = [0, 0, 0];
newColor[0] = a[0] + (b[0] - a[0]) * t;
newColor[1] = a[1] + (b[1] - a[1]) * t;
newColor[2] = a[2] + (b[2] - a[2]) * t;
return newColor;
}
function colourToText(colour) {
return "rgb(" + colour[0] + "," + colour[1] + "," + colour[2] + ")"
}
function render_clear() {
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
ctx.fillStyle = "black";
ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
}
function drawEyelid(x1, y1) {
x1 -= centerX
y1 -= centerY
let angle = Math.atan(y1 / x1);
// if(angle >=Math.PI){
// angle -=Math.PI
// console.log("greater called")
// }
angle= Math.abs(angle)
console.log(angle)
let x2Old = 0 + leafWidth
let y2Old = 0
let x3Old = 0 + (leafWidth / 2);
let y3Old = 0 + (leafHeight / 2);
let x4Old = 0 + (leafWidth / 2);
let y4Old = 0 - (leafHeight / 2);
let x2 = x2Old * Math.cos(angle) - y2Old * Math.sin(angle)
let y2 = x2Old * Math.sin(angle) + y2Old * Math.cos(angle)
let x3 = x3Old * Math.cos(angle) - y3Old * Math.sin(angle)
let y3 = x3Old * Math.sin(angle) + y3Old * Math.cos(angle)
let x4 = x4Old * Math.cos(angle) - y4Old * Math.sin(angle)
let y4 = x4Old * Math.sin(angle) + y4Old * Math.cos(angle)
let oldx1 = x1
let oldy1 = y1
x1 += centerX// +x2/2
y1 += centerY// +x2/2
x2 += x1
y2 += y1
x3 += x1
y3 += y1
x4 += x1
y4 += y1
ctx.beginPath()
ctx.moveTo(x1, y1)
ctx.quadraticCurveTo(x3, y3, x2, y2)
ctx.moveTo(x1, y1)
ctx.quadraticCurveTo(x4, y4, x2, y2)
ctx.fillStyle = 'black'
ctx.fill()
ctx.lineWidth = 1
ctx.beginPath()
ctx.moveTo(x1, y1)
ctx.quadraticCurveTo(x3, y3, x2, y2)
ctx.moveTo(x1, y1)
ctx.quadraticCurveTo(x4, y4, x2, y2)
ctx.strokeStyle = 'orange'
ctx.stroke()
}
function drawEyelid2(x1, y1) {
x1 -= centerX
y1 -= centerY
let angle = Math.atan(y1 / x1);
let localLeafCenterX = -(leafWidth * Math.cos(Math.PI - angle)) / 2
let localLeafCenterY = (leafWidth * Math.sin(Math.PI - angle)) / 2
let x2 = x1 - (leafWidth * Math.cos(Math.PI - angle));
let y2 = y1 + (leafWidth * Math.sin(Math.PI - angle));
let alpha = Math.atan(leafHeight / (leafWidth / 2))
let x3 = x1 + localLeafCenterX + leafHeight * Math.sin(alpha);
let y3 = y1 + localLeafCenterY - leafHeight * Math.cos(alpha);
let x4 = x1 + localLeafCenterX - leafHeight * Math.sin(alpha);
let y4 = y1 + localLeafCenterY + leafHeight * Math.cos(alpha);
x1 += centerX
y1 += centerY
x2 += centerX
y2 += centerY
x3 += centerX
y3 += centerY
x4 += centerX
y4 += centerY
ctx.beginPath()
ctx.moveTo(x1, y1)
ctx.quadraticCurveTo(x3, y3, x2, y2)
ctx.moveTo(x1, y1)
ctx.quadraticCurveTo(x4, y4, x2, y2)
ctx.fillStyle = 'black'
ctx.fill()
ctx.lineWidth = 1
ctx.beginPath()
ctx.moveTo(x1, y1)
ctx.quadraticCurveTo(x3, y3, x2, y2)
ctx.moveTo(x1, y1)
ctx.quadraticCurveTo(x4, y4, x2, y2)
ctx.strokeStyle = 'orange'
ctx.stroke()
}
</script>
</body>
</html>

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@ -31,9 +31,10 @@
render();
render_clear();
let colour1 = [137, 54, 255];
let colour1 = [0, 0, 255];
let colour2 = [158, 255, 54];
Draw_nodal_expanding(5, 100000, rotation * 2 + 33000,0, colour1, colour2, 0.5, 2)
// Draw_nodal_expanding(5, 100000, rotation * 2 + 33000,0, colour1, colour2, 0.5, 2)
Draw_nodal_expanding(5, 100000, rotation * 2+30000,0, colour1, colour2, 0.5, 2)
// Draw_nodal_expanding(5, 10000, rotation, 0, colour1, colour2, 1, 2)
console.log(rotation)
}, 1000 / fps);

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@ -32,7 +32,8 @@
render_clear();
// Draw_Phyllotaxis(rotation + 3.1);
Draw_Phyllotaxis(rotation + 1.5);
// Draw_Phyllotaxis(rotation + 1.5);
Draw_Phyllotaxis(rotation);
console.log(rotation + 3.1)
// Draw_Phyllotaxis(rotation/5000);

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