get triangle data from line — live canvas animation example

motion & easing8+
ball bounce
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ball orbiting a sun
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lerp (smooth follow)
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easing functions
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spring (damped harmonic motion)
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move object to changing point
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quadratic bezier curve
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Bézier curves
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trig, angles & vectors8+
sine curve
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demystify sine and cosine
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find points on a circle
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point object towards another
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distribute around circle
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vector reflection (bounce)
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vector rotation
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angle interpolation (shortest turn)
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collision detection11+
point to circle collision
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point to polygon collision
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rectangle to rectangle collision
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circle to rectangle collision
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circle to circle collision
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line to circle collision
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line to line collision
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line to point collision
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line to rectangle collision
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polygon to polygon collision
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circle field (collision at scale)
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numbers in motion7+
lerp
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inverse lerp
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map range
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clamp
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wrap
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ping pong
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smoothstep
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geometry & shapes8-
get a point on a line
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get line length
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get triangle data from line
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draw star
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draw rectangle (using trig, not rect())
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draw equilateral triangle (from radius and center point)
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get circle from three points
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center on parent
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generative showpieces13+
Fourier epicycles
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Conway's Game of Life
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Perlin noise flow field
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Wave interference
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Gravitational lensing
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Orbital precession (GR)
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Phyllotaxis (golden angle)
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Murmuration (flocking starlings)
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Sierpinski Triangle
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Glitter
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Pretty Ring
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Sparklies
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Klimt-Inspired Swirls
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handy helpers7+
degrees to radians
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radians to degrees
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format number with commas
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random integer between
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random number between
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color lerp (RGB vs HSL)
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color families (pick a range by name)
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click and drag to draw line and get data.

the hypotenuse is 282 pixels long.
the adjacent is 200 pixels long.
the opposite is 200 pixels long.
angle "A" is 44 degrees.
angle "B" is 46 degrees.
angle "C" is 90 degrees.