| 6 | import buildcraft.lib.misc.data.Box; |
| 7 | |
| 8 | public class Matrix4i { |
| 9 | public static final Matrix4i IDENTITY = makeScale(VecUtil.POS_ONE); |
| 10 | |
| 11 | private final int m00, m01, m02, m03; |
| 12 | private final int m10, m11, m12, m13; |
| 13 | private final int m20, m21, m22, m23; |
| 14 | private final int m30, m31, m32, m33; |
| 15 | |
| 16 | public static Matrix4i makeTranslation(Vec3i vec) { |
| 17 | // @formatter:off |
| 18 | return new Matrix4i( |
| 19 | 1, 0, 0, vec.getX(), |
| 20 | 0, 1, 0, vec.getY(), |
| 21 | 0, 0, 1, vec.getZ(), |
| 22 | 0, 0, 0, 1); |
| 23 | // @formatter:on |
| 24 | } |
| 25 | |
| 26 | public static Matrix4i makeScale(Vec3i vec) { |
| 27 | // @formatter:off |
| 28 | return new Matrix4i( |
| 29 | vec.getX(), 0, 0, 0, |
| 30 | 0, vec.getY(), 0, 0, |
| 31 | 0, 0, vec.getZ(), 0, |
| 32 | 0, 0, 0, 1); |
| 33 | // @formatter:on |
| 34 | } |
| 35 | |
| 36 | public static Matrix4i makeRotY(int ang) { |
| 37 | if (ang % 90 != 0) throw new IllegalArgumentException("You can only have angles in increments of 90 degrees!"); |
| 38 | ang %= 360; |
| 39 | |
| 40 | if (ang == 90) { |
| 41 | // @formatter:off |
| 42 | return new Matrix4i( |
| 43 | 0, 0, 1, 0, |
| 44 | 0, 1, 0, 0, |
| 45 | -1, 0, 0, 0, |
| 46 | 0, 0, 0, 1); |
| 47 | // @formatter:on |
| 48 | } else if (ang == 180) { |
| 49 | // @formatter:off |
| 50 | return new Matrix4i( |
| 51 | -1, 0, 0, 0, |
| 52 | 0, 1, 0, 0, |
| 53 | 0, 0,-1, 0, |
| 54 | 0, 0, 0, 1); |
| 55 | // @formatter:on |
| 56 | } else if (ang == 270) { |
| 57 | // @formatter:off |
| 58 | return new Matrix4i( |
| 59 | 0, 0,-1, 0, |
| 60 | 0, 1, 0, 0, |
| 61 | 1, 0, 0, 0, |
| 62 | 0, 0, 0, 1); |
| 63 | // @formatter:on |
| 64 | } else return IDENTITY; |
| 65 | } |