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style margin 0 padding 0 box sizing border box body display grid place items center height 600px svg width 75vmin height 75vmin style script type module import spline from https cdn skypack dev georgedoescode spline 1 0 1 import SVG from https cdn skypack dev svgdotjs svg js end result complete code for the following tutorial console clear choose a number within a range integer whole number by default function random min max float false const val Math random max min min if float return val return Math floor val class BlobCharacter constructor width height target viewBox width height dimensions this width width this height height position of our character within the viewBox the center this x this width 2 this y this height 2 svg element svg js instance we are using to render this svg SVG addTo target mount instance to our target viewbox 0 0 this width this height set the svg viewBox attribute choose a random size radius for our character this size random 50 80 this setColors this svg node style background this lightColor drawBody how many points do we want const numPoints random 3 12 step used to place each point at equal distances const angleStep Math PI 2 numPoints keep track of our points const points for let i 1 i numPoints i how much randomness should be added to each point const pull random 0 75 1 true x y coordinates of the current point cos theta radius a little randomness thrown in const x this x Math cos i angleStep this size pull sin theta radius a little randomness thrown in const y this y Math sin i angleStep this size pull push the point to the points array points push x y generate a smooth continuous curve based on the points using bezier curves spline will return an svg path data string The arguments are points tension close Play with tension and check out the effect const pathData spline points 1 true render the body in the form of an svg path element this svg path pathData stroke width 2 color this darkColor fill this primaryColor drawEyes ensure the width of two eyes never exceeds 50 of the characters body size const maxWidth this size 2 if a random number between 0 and 1 is greater than 0 75 the character is a cyclops const isCyclops random 0 1 true 0 75 the size of each or only eye const eyeSize random maxWidth 2 maxWidth if isCyclops draw just 1 eye in the center of the character this drawEye this x this y eyeSize else draw 2 eyes equidistant from the center of the character this drawEye this x maxWidth 2 this y eyeSize this drawEye this x maxWidth 2 this y eyeSize x position y position radius size drawEye x y size create a new svg group to add all the eye content too const eye this svg group group elements do not have an x and y attribute so we need to transform it to the right position eye transform translateX x translateY y add the outer ring of the eye an svg circle element to our eye group eye circle size cx cy are the x y values for the svg circle element cx 0 cy 0 stroke width 2 color this darkColor fill this lightColor add the inner part of the eye another svg circle element to our eye group eye circle size 2 cx 0 cy 0 fill this darkColor setColors random hue const hue random 0 360 random saturation keeping it quite high here as a stylistic preference const saturation random 75 100 random lightness keeping it quite high here as a stylistic preference const lightness random 75 95 base color this primaryColor hsl hue saturation lightness almost black slightly tinted with the base color this darkColor hsl hue saturation 2 almost white slightly tinted with the base color this lightColor hsl hue saturation 98 draw clear the svg element this svg clear generate new colors this setColors set the svg background color this svg node style background this lightColor generate a new body shape and render it this drawBody genearte new eye s and render them this drawEyes viewBox w x h target to append the svg element to const character new BlobCharacter 200 200 document body draw the initial character character draw setInterval every 1 5s after the initial render draw a new character character draw 1500 script

const maxWidth this size 2 if a random number between 0 and 1 is greater than 0 75 the character is a cyclops const isCyclops random 0 1 true 0 75 the size of each or only eye const eyeSize random maxWidth 2 maxWidth if isCyclops draw just 1 eye in the center of the character this drawEye this x this y eyeSize else draw 2 eyes equidistant from the center of the character this drawEye this x maxWidth 2 this y eyeSize this drawEye this x maxWidth 2 this y eyeSize x position y position radius size drawEye x y size create a new svg group to add all the eye content too const eye this svg group group elements do not have an x and y attribute so we need to transform it to the right position eye transform translateX x translateY y add the outer ring of the eye an svg circle element to our eye group eye circle size cx cy are the x y values for the svg circle element cx 0 cy 0 stroke width 2 color this darkColor fill this lightColor add the inner part of the eye another svg circle element to our eye group eye circle size 2 cx 0 cy 0 fill this darkColor setColors random hue const hue random 0 360 random saturation keeping it quite high here as a stylistic preference const saturation random 75 100 random lightness keeping it quite high here as a stylistic preference const lightness random 75 95 base color this primaryColor hsl hue saturation lightness almost black slightly tinted with the base color this darkColor hsl hue saturation 2 almost white slightly tinted with the base color this lightColor hsl hue saturation 98 draw clear the svg element this svg clear generate new colors this setColors set the svg background color this svg node style background this lightColor generate a new body shape and render it this drawBody genearte new eye s and render them this drawEyes viewBox w x h target to append the svg element to const character new BlobCharacter 200 200 document body draw the initial character character draw setInterval every 1 5s after the initial render draw a new character character draw 1500 script

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a4print
about
acejs
acejs2
acejs3
aessecurity
angularjs
animbackgroundimage
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assert
asteroidsjs
backgrounds01
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wikipedia