Teoria - Função Quadrática - http://brazilis.github.io/title>

Analisando recursos para desenhos em javascript. Chatinho...
Acima, o símbolo da nave Enterprise, a partir de uma função quadrática. Código retirado do site http://braziljs.github.io/eloquente-javascript/chapters/desenhando-com-canvas/ .
Primeiro, ele lança a variável cx e diz que ela é um querySelector com identificador canvas, no âmbito 2d.
"The querySelector() method returns the first element that matches a specified CSS selector(s) in the document." Ver em https://www.w3schools.com/jsref/
met_document_queryselector.asp

quadraticCurveTo é uma curva Bézier, "The quadraticCurveTo() method adds a point to the current path by using the specified control points that represent a quadratic Bézier curve." Ver em https://www.w3schools.com/tags
canvas_quadraticcurveto.asp

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Analyzing resources for javascript drawings. Boring zzzzZZZ...
The symbol of the Enterprise ship, from a quadratic function. Code taken from the site http://braziljs.github.io/eloquente-javascript/chapters/deenhando-com-canvas/.
First, it throws the variable cx and says that it is a query selector with canvas identifier, within 2d scope.
"The querySelector() method returns the first element that matches a specified CSS selector(s) in the document." Ver em https://www.w3schools.com/jsref/
met_document_queryselector.asp

quadraticCurveTo is a Bézier curve, "The quadraticCurveTo () method adds a point to the current path by using the specified control points that represent a quadratic Bézier curve." See https://www.w3schools.com/tags
canvas_quadraticcurveto.asp

js-curva-quadratica-Teoria