pointon

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pointon functions pointonP

geomland.pointon :x :y


Position of a point along geometric object

Definition:

to geomland.pointon :x :y

	if not (number? :y) 
	[ error "'Invalid type of geometric value in pointon' ]

	if circle? :x
	[ output :x.center + (point :x.radius 0) ° :y ]

	if (segment? :x) or (line? :x) or (ray? :x)
	[ output :x.initial + :y * (normalize :x.final-:x.initial) ]

	if ellipse? :x
	[ output :x.center + (point :x.radiusx * (cos :y) :x.radiusy * (sin :y)) ° :x.spin ]

	if hyperbola? :x
	[ output :x.center + (point :x.radiusy / (cos :y) :x.radiusx * (tan :y)) ° (90+:x.spin) ]

	if parabola? :x
	[ output :x.center + (point :y*:y :x.radius*:y) ° :x.spin ]

	if angle? :x
	[ output :x.center + (point :x.radius 0) ° (:x.range.fromangle - :y) ]

	error "'Invalid type of geometric value in pointon'
end

Examples:

References:

pointon functions pointonP