2 * Jalview - A Sequence Alignment Editor and Viewer
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3 * Copyright (C) 2005 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle
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5 * This program is free software; you can redistribute it and/or
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6 * modify it under the terms of the GNU General Public License
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7 * as published by the Free Software Foundation; either version 2
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8 * of the License, or (at your option) any later version.
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10 * This program is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 * GNU General Public License for more details.
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15 * You should have received a copy of the GNU General Public License
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16 * along with this program; if not, write to the Free Software
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17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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21 public class MCMatrix {
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26 float myconst = (float) (Math.PI / 180);
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28 public MCMatrix(int rows, int cols) {
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29 matrix = new float[rows][cols];
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30 tmp = new float[rows][cols];
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33 public void addElement(int i, int j, float value) {
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34 matrix[i][j] = value;
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37 public void rotatex(float degrees) {
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38 mycos = (float) (Math.cos(degrees * myconst));
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39 mysin = (float) (Math.sin(degrees * myconst));
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53 public void rotatez(float degrees) {
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54 mycos = (float) (Math.cos(degrees * myconst));
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55 mysin = (float) (Math.sin(degrees * myconst));
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70 public void rotatey(float degrees) {
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71 mycos = (float) (Math.cos(degrees * myconst));
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72 mysin = (float) (Math.sin(degrees * myconst));
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87 public float[] vectorMultiply(float[] vect) {
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88 float[] temp = new float[3];
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94 for (int i = 0; i < 3; i++) {
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95 temp[i] = ((float) matrix[i][0] * vect[0]) +
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96 ((float) matrix[i][1] * vect[1]) +
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97 ((float) matrix[i][2] * vect[2]);
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107 public void preMultiply(float[][] mat) {
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108 float[][] tmp = new float[3][3];
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110 for (int i = 0; i < 3; i++) {
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111 for (int j = 0; j < 3; j++) {
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112 tmp[i][j] = (mat[i][0] * matrix[0][j]) +
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113 (mat[i][1] * matrix[1][j]) + (mat[i][2] * matrix[2][j]);
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117 for (int i = 0; i < 3; i++) {
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118 for (int j = 0; j < 3; j++) {
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119 matrix[i][j] = tmp[i][j];
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124 public void postMultiply(float[][] mat) {
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125 float[][] tmp = new float[3][3];
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127 for (int i = 0; i < 3; i++) {
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128 for (int j = 0; j < 3; j++) {
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129 tmp[i][j] = (matrix[i][0] * mat[0][j]) +
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130 (matrix[i][1] * mat[1][j]) + (matrix[i][2] * mat[2][j]);
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134 for (int i = 0; i < 3; i++) {
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135 for (int j = 0; j < 3; j++) {
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136 matrix[i][j] = tmp[i][j];
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141 public void setIdentity() {
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