14 lines
481 B
Java
14 lines
481 B
Java
module.exports = {
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xAt: function xAt(psi, rx, ry, cx, t) {
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return rx * Math.cos(psi) * Math.cos(t) - ry * Math.sin(psi) * Math.sin(t) + cx;
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},
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yAt: function yAt(psi, rx, ry, cy, t) {
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return rx * Math.sin(psi) * Math.cos(t) + ry * Math.cos(psi) * Math.sin(t) + cy;
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},
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xExtrema: function xExtrema(psi, rx, ry) {
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return Math.atan(-ry / rx * Math.tan(psi));
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},
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yExtrema: function yExtrema(psi, rx, ry) {
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return Math.atan(ry / (rx * Math.tan(psi)));
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}
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}; |