Rev 265 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 265 | chris | 1 | package com.gebauz.Bauzoid.math; |
| 2 | |||
| 3 | public class MathUtil |
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| 4 | { |
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| 5 | static public final float EPSILON = 0.0000001f; |
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| 6 | |||
| 7 | /** Clamp value to range. */ |
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| 8 | public static float clamp(float value, float min, float max) |
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| 9 | { |
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| 10 | if (value < min) |
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| 11 | return min; |
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| 12 | if (value > max) |
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| 13 | return max; |
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| 14 | return value; |
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| 15 | } |
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| 16 | |||
| 17 | /** Clamp value to range. */ |
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| 18 | public static int clamp(int value, int min, int max) |
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| 19 | { |
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| 20 | if (value < min) |
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| 21 | return min; |
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| 22 | if (value > max) |
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| 23 | return max; |
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| 24 | return value; |
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| 25 | } |
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| 26 | |||
| 27 | /** Float-based sine function in degrees. */ |
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| 28 | public static float sin(float degrees) |
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| 29 | { |
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| 30 | return (float)Math.sin(degToRad(degrees)); |
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| 31 | } |
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| 32 | |||
| 33 | /** Float-based cosine function in degrees. */ |
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| 34 | public static float cos(float degrees) |
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| 35 | { |
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| 36 | return (float)Math.cos(degToRad(degrees)); |
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| 37 | } |
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| 38 | |||
| 39 | /** Float-based tangent function in degrees. */ |
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| 40 | public static float tan(float degrees) |
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| 41 | { |
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| 42 | return (float)Math.tan(degToRad(degrees)); |
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| 43 | } |
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| 44 | |||
| 45 | /** Convert from degrees to radians. */ |
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| 46 | public static float degToRad(float degrees) |
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| 47 | { |
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| 48 | return (float)(degrees * Math.PI / 180.0f); |
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| 49 | } |
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| 50 | |||
| 51 | /** Convert from radians to degrees. */ |
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| 52 | public static float radToDeg(float rad) |
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| 53 | { |
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| 54 | return (float)(rad * 180.0f / Math.PI); |
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| 55 | } |
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| 269 | chris | 56 | |
| 265 | chris | 57 | /** Return the angle inside a range of 0 to 360 degrees. */ |
| 58 | public static float stayInDegrees0to360(float degrees) |
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| 59 | { |
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| 60 | float result = degrees; |
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| 61 | while (result > 360.0f) |
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| 62 | result -= 360.0f; |
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| 63 | while (result < 0.0f) |
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| 64 | result += 360.0f; |
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| 65 | return result; |
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| 66 | } |
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| 67 | |||
| 68 | /** Return the (smaller) angle in degrees between the two angles. */ |
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| 69 | public static float turnDegrees(float rot1, float rot2) |
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| 70 | { |
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| 71 | if (Math.abs(rot1 - rot2) > (180.0f)) |
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| 72 | { |
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| 73 | if (rot1 < rot2) |
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| 74 | { |
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| 75 | rot1 += 360.0f; |
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| 76 | } |
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| 77 | else |
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| 78 | { |
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| 79 | rot1 -= 360.0f; |
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| 80 | } |
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| 81 | } |
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| 82 | return Math.abs(rot2-rot1); |
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| 83 | } |
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| 84 | |||
| 85 | /** Simple ease in/ease out function. */ |
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| 86 | public static float ease(float t) |
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| 87 | { |
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| 88 | return (t * t * (3.0f - 2.0f * t)); |
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| 89 | } |
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| 90 | |||
| 91 | /* public static float easeOut(float t, float startValue, float changeValue) |
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| 92 | { |
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| 93 | |||
| 94 | } |
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| 95 | |||
| 96 | Math.easeOutQuad = function (t, b, c, d) { |
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| 97 | t /= d; |
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| 98 | return -c * t*(t-2) + b; |
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| 99 | };*/ |
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| 100 | } |
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| 101 |