-
-
Save SerzN1/9028539af380fe9cc855 to your computer and use it in GitHub Desktop.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| /////////////////////////////////////////////////////////// | |
| // Plain SASS Trigonometry Algorithm in Taylor Expansion // | |
| // // | |
| // Based on // | |
| // http://japborst.net/posts/sass-sines-and-cosines // | |
| /////////////////////////////////////////////////////////// | |
| $pi: 3.14159265359; | |
| $_precision: 10; | |
| @function pow($base, $exp) { | |
| $value: $base; | |
| @if $exp > 1 { | |
| @for $i from 2 through $exp { | |
| $value: $value * $base; | |
| } | |
| } | |
| @if $exp < 1{ | |
| @for $i from 0 through -$exp { | |
| $value: $value / $base; | |
| } | |
| } | |
| @return $value; | |
| } | |
| @function fact($num) { | |
| $fact: 1; | |
| @if $num > 0{ | |
| @for $i from 1 through $num { | |
| $fact: $fact * $i; | |
| } | |
| } | |
| @return $fact; | |
| } | |
| @function _to_unitless_rad($angle) { | |
| @if unit($angle) == "deg" { | |
| $angle: $angle / 180deg * $pi; | |
| } | |
| @if unit($angle) == "rad" { | |
| $angle: $angle / 1rad; | |
| } | |
| @return $angle; | |
| } | |
| @function sin($angle){ | |
| $a: _to_unitless_rad($angle); | |
| $sin: $a; | |
| @for $n from 1 through $_precision { | |
| $sin: $sin + (pow(-1, $n) / fact(2 * $n + 1) ) * pow($a, (2 * $n + 1)); | |
| } | |
| @return $sin; | |
| } | |
| @function cos($angle){ | |
| $a: _to_unitless_rad($angle); | |
| $cos: 1; | |
| @for $n from 1 through $_precision { | |
| $cos: $cos + ( pow(-1,$n) / fact(2*$n) ) * pow($a,2*$n); | |
| } | |
| @return $cos; | |
| } | |
| @function tan($angle){ | |
| @return sin($angle) / cos($angle); | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment