From 935d2596c13371bb745d921dbcb9f05b0c11a010 Mon Sep 17 00:00:00 2001 From: Kenneth Russel Date: Mon, 15 Jun 2009 23:05:16 +0000 Subject: Deleted obsolete source code in preparation for copying JOGL_2_SANDBOX on to trunk git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/../svn-server-sync/jogl-demos/trunk@351 3298f667-5e0e-4b4a-8ed4-a3559d26a5f4 --- src/gleem/linalg/Mat2f.java | 169 -------------------------------------------- 1 file changed, 169 deletions(-) delete mode 100644 src/gleem/linalg/Mat2f.java (limited to 'src/gleem/linalg/Mat2f.java') diff --git a/src/gleem/linalg/Mat2f.java b/src/gleem/linalg/Mat2f.java deleted file mode 100644 index 6852dbc..0000000 --- a/src/gleem/linalg/Mat2f.java +++ /dev/null @@ -1,169 +0,0 @@ -/* - * gleem -- OpenGL Extremely Easy-To-Use Manipulators. - * Copyright (C) 1998-2003 Kenneth B. Russell (kbrussel@alum.mit.edu) - * - * Copying, distribution and use of this software in source and binary - * forms, with or without modification, is permitted provided that the - * following conditions are met: - * - * Distributions of source code must reproduce the copyright notice, - * this list of conditions and the following disclaimer in the source - * code header files; and Distributions of binary code must reproduce - * the copyright notice, this list of conditions and the following - * disclaimer in the documentation, Read me file, license file and/or - * other materials provided with the software distribution. - * - * The names of Sun Microsystems, Inc. ("Sun") and/or the copyright - * holder may not be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED "AS IS," WITHOUT A WARRANTY OF ANY - * KIND. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND - * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE, NON-INTERFERENCE, ACCURACY OF - * INFORMATIONAL CONTENT OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. THE - * COPYRIGHT HOLDER, SUN AND SUN'S LICENSORS SHALL NOT BE LIABLE FOR - * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR - * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL THE - * COPYRIGHT HOLDER, SUN OR SUN'S LICENSORS BE LIABLE FOR ANY LOST - * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, - * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND - * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR - * INABILITY TO USE THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY - * OF SUCH DAMAGES. YOU ACKNOWLEDGE THAT THIS SOFTWARE IS NOT - * DESIGNED, LICENSED OR INTENDED FOR USE IN THE DESIGN, CONSTRUCTION, - * OPERATION OR MAINTENANCE OF ANY NUCLEAR FACILITY. THE COPYRIGHT - * HOLDER, SUN AND SUN'S LICENSORS DISCLAIM ANY EXPRESS OR IMPLIED - * WARRANTY OF FITNESS FOR SUCH USES. - */ - -package gleem.linalg; - -/** 2x2 matrix class useful for simple linear algebra. Representation - is (as Mat4f) in row major order and assumes multiplication by - column vectors on the right. */ - -public class Mat2f { - private float[] data; - - /** Creates new matrix initialized to the zero matrix */ - public Mat2f() { - data = new float[4]; - } - - /** Initialize to the identity matrix. */ - public void makeIdent() { - for (int i = 0; i < 2; i++) { - for (int j = 0; j < 2; j++) { - if (i == j) { - set(i, j, 1.0f); - } else { - set(i, j, 0.0f); - } - } - } - } - - /** Gets the (i,j)th element of this matrix, where i is the row - index and j is the column index */ - public float get(int i, int j) { - return data[2 * i + j]; - } - - /** Sets the (i,j)th element of this matrix, where i is the row - index and j is the column index */ - public void set(int i, int j, float val) { - data[2 * i + j] = val; - } - - /** Set column i (i=[0..1]) to vector v. */ - public void setCol(int i, Vec2f v) { - set(0, i, v.x()); - set(1, i, v.y()); - } - - /** Set row i (i=[0..1]) to vector v. */ - public void setRow(int i, Vec2f v) { - set(i, 0, v.x()); - set(i, 1, v.y()); - } - - /** Transpose this matrix in place. */ - public void transpose() { - float t = get(0, 1); - set(0, 1, get(1, 0)); - set(1, 0, t); - } - - /** Return the determinant. */ - public float determinant() { - return (get(0, 0) * get(1, 1) - get(1, 0) * get(0, 1)); - } - - /** Full matrix inversion in place. If matrix is singular, returns - false and matrix contents are untouched. If you know the matrix - is orthonormal, you can call transpose() instead. */ - public boolean invert() { - float det = determinant(); - if (det == 0.0f) - return false; - - // Create transpose of cofactor matrix in place - float t = get(0, 0); - set(0, 0, get(1, 1)); - set(1, 1, t); - set(0, 1, -get(0, 1)); - set(1, 0, -get(1, 0)); - - // Now divide by determinant - for (int i = 0; i < 4; i++) { - data[i] /= det; - } - return true; - } - - /** Multiply a 2D vector by this matrix. NOTE: src and dest must be - different vectors. */ - public void xformVec(Vec2f src, Vec2f dest) { - dest.set(get(0, 0) * src.x() + - get(0, 1) * src.y(), - - get(1, 0) * src.x() + - get(1, 1) * src.y()); - } - - /** Returns this * b; creates new matrix */ - public Mat2f mul(Mat2f b) { - Mat2f tmp = new Mat2f(); - tmp.mul(this, b); - return tmp; - } - - /** this = a * b */ - public void mul(Mat2f a, Mat2f b) { - for (int rc = 0; rc < 2; rc++) - for (int cc = 0; cc < 2; cc++) { - float tmp = 0.0f; - for (int i = 0; i < 2; i++) - tmp += a.get(rc, i) * b.get(i, cc); - set(rc, cc, tmp); - } - } - - public Matf toMatf() { - Matf out = new Matf(2, 2); - for (int i = 0; i < 2; i++) { - for (int j = 0; j < 2; j++) { - out.set(i, j, get(i, j)); - } - } - return out; - } - - public String toString() { - String endl = System.getProperty("line.separator"); - return "(" + - get(0, 0) + ", " + get(0, 1) + endl + - get(1, 0) + ", " + get(1, 1) + ")"; - } -} -- cgit v1.2.3