JAL-3026 MCview -> mc_view

[jalview.git] / src / mc_view / MCMatrix.java

diff --git a/src/mc_view/MCMatrix.java b/src/mc_view/MCMatrix.java
new file mode 100755 (executable)
index 0000000..01be1f9
--- /dev/null
+++ b/src/mc_view/MCMatrix.java
@@ -0,0 +1,177 @@
+/*
+ * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
+ * Copyright (C) $$Year-Rel$$ The Jalview Authors
+ * 
+ * This file is part of Jalview.
+ * 
+ * Jalview is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License 
+ * as published by the Free Software Foundation, either version 3
+ * of the License, or (at your option) any later version.
+ *  
+ * Jalview is distributed in the hope that it will be useful, but 
+ * WITHOUT ANY WARRANTY; without even the implied warranty 
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+ * PURPOSE.  See the GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with Jalview.  If not, see <http://www.gnu.org/licenses/>.
+ * The Jalview Authors are detailed in the 'AUTHORS' file.
+ */
+package mc_view;
+
+public class MCMatrix
+{
+  float[][] matrix;
+
+  float[][] tmp;
+
+  float mycos;
+
+  float mysin;
+
+  float myconst = (float) (Math.PI / 180);
+
+  public MCMatrix(int rows, int cols)
+  {
+    matrix = new float[rows][cols];
+    tmp = new float[rows][cols];
+  }
+
+  public void addElement(int i, int j, float value)
+  {
+    matrix[i][j] = value;
+  }
+
+  public void rotatex(float degrees)
+  {
+    mycos = (float) (Math.cos(degrees * myconst));
+    mysin = (float) (Math.sin(degrees * myconst));
+
+    tmp[0][0] = 1;
+    tmp[0][1] = 0;
+    tmp[0][2] = 0;
+    tmp[1][0] = 0;
+    tmp[1][1] = mycos;
+    tmp[1][2] = mysin;
+    tmp[2][0] = 0;
+    tmp[2][1] = -mysin;
+    tmp[2][2] = mycos;
+    preMultiply(tmp);
+  }
+
+  public void rotatez(float degrees)
+  {
+    mycos = (float) (Math.cos(degrees * myconst));
+    mysin = (float) (Math.sin(degrees * myconst));
+
+    tmp[0][0] = mycos;
+    tmp[0][1] = -mysin;
+    tmp[0][2] = 0;
+    tmp[1][0] = mysin;
+    tmp[1][1] = mycos;
+    tmp[1][2] = 0;
+    tmp[2][0] = 0;
+    tmp[2][1] = 0;
+    tmp[2][2] = 1;
+
+    preMultiply(tmp);
+  }
+
+  public void rotatey(float degrees)
+  {
+    mycos = (float) (Math.cos(degrees * myconst));
+    mysin = (float) (Math.sin(degrees * myconst));
+
+    tmp[0][0] = mycos;
+    tmp[0][1] = 0;
+    tmp[0][2] = -mysin;
+    tmp[1][0] = 0;
+    tmp[1][1] = 1;
+    tmp[1][2] = 0;
+    tmp[2][0] = mysin;
+    tmp[2][1] = 0;
+    tmp[2][2] = mycos;
+
+    preMultiply(tmp);
+  }
+
+  public float[] vectorMultiply(float[] vect)
+  {
+    float[] temp = new float[3];
+
+    temp[0] = vect[0];
+    temp[1] = vect[1];
+    temp[2] = vect[2];
+
+    for (int i = 0; i < 3; i++)
+    {
+      temp[i] = ((float) matrix[i][0] * vect[0])
+              + ((float) matrix[i][1] * vect[1])
+              + ((float) matrix[i][2] * vect[2]);
+    }
+
+    vect[0] = temp[0];
+    vect[1] = temp[1];
+    vect[2] = temp[2];
+
+    return vect;
+  }
+
+  public void preMultiply(float[][] mat)
+  {
+    float[][] tmp = new float[3][3];
+
+    for (int i = 0; i < 3; i++)
+    {
+      for (int j = 0; j < 3; j++)
+      {
+        tmp[i][j] = (mat[i][0] * matrix[0][j]) + (mat[i][1] * matrix[1][j])
+                + (mat[i][2] * matrix[2][j]);
+      }
+    }
+
+    for (int i = 0; i < 3; i++)
+    {
+      for (int j = 0; j < 3; j++)
+      {
+        matrix[i][j] = tmp[i][j];
+      }
+    }
+  }
+
+  public void postMultiply(float[][] mat)
+  {
+    float[][] tmp = new float[3][3];
+
+    for (int i = 0; i < 3; i++)
+    {
+      for (int j = 0; j < 3; j++)
+      {
+        tmp[i][j] = (matrix[i][0] * mat[0][j]) + (matrix[i][1] * mat[1][j])
+                + (matrix[i][2] * mat[2][j]);
+      }
+    }
+
+    for (int i = 0; i < 3; i++)
+    {
+      for (int j = 0; j < 3; j++)
+      {
+        matrix[i][j] = tmp[i][j];
+      }
+    }
+  }
+
+  public void setIdentity()
+  {
+    matrix[0][0] = 1;
+    matrix[1][1] = 1;
+    matrix[2][2] = 1;
+    matrix[0][1] = 0;
+    matrix[0][2] = 0;
+    matrix[1][0] = 0;
+    matrix[1][2] = 0;
+    matrix[2][0] = 0;
+    matrix[2][1] = 0;
+  }
+}