Integration of Tomas Hrasky's port of basic GLU NURBS functionality

from C++ to Java, plus example applications, done as part of his Bachelor of Science degree at the University of Hradec Králové, Faculty of Informatics and Management. Current state of code is documented in src/classes/com/sun/opengl/impl/nurbs/README.txt. Example applications require Java 1.5 and are not currently built by default. Specify -Djogl.nurbs=1 during jogl-demos build with a 1.5 javac on the PATH to build them. Dependent jars are copied to build output directory. Deleted old partially-complete GLU NURBS port. git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@1389 232f8b59-042b-4e1e-8c03-345bb8c30851
author: Kenneth Russel <kbrussel@alum.mit.edu> 2007-10-09 07:38:10 +0000
committer: Kenneth Russel <kbrussel@alum.mit.edu> 2007-10-09 07:38:10 +0000
commit: c92573e5f90bfefdfa6697a3f628a263c2f211f9 (patch)
tree: 53258db2dae2d3a54f9c2f30cd1a55fe163ba958 /src/classes/com/sun/opengl/impl/nurbs/Backend.java
parent: f7b664564d2dcdf674660b5d1fc38c7f2ac25b76 (diff)
1 files changed, 217 insertions, 0 deletions
diff --git a/src/classes/com/sun/opengl/impl/nurbs/Backend.java b/src/classes/com/sun/opengl/impl/nurbs/Backend.java
new file mode 100755
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+++ b/src/classes/com/sun/opengl/impl/nurbs/Backend.java
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+package com.sun.opengl.impl.nurbs;
+
+/*
+ ** License Applicability. Except to the extent portions of this file are
+ ** made subject to an alternative license as permitted in the SGI Free
+ ** Software License B, Version 1.1 (the "License"), the contents of this
+ ** file are subject only to the provisions of the License. You may not use
+ ** this file except in compliance with the License. You may obtain a copy
+ ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
+ ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
+ **
+ ** http://oss.sgi.com/projects/FreeB
+ **
+ ** Note that, as provided in the License, the Software is distributed on an
+ ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
+ ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
+ ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
+ ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+ **
+ ** Original Code. The Original Code is: OpenGL Sample Implementation,
+ ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
+ ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
+ ** Copyright in any portions created by third parties is as indicated
+ ** elsewhere herein. All Rights Reserved.
+ **
+ ** Additional Notice Provisions: The application programming interfaces
+ ** established by SGI in conjunction with the Original Code are The
+ ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
+ ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
+ ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
+ ** Window System(R) (Version 1.3), released October 19, 1998. This software
+ ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
+ ** published by SGI, but has not been independently verified as being
+ ** compliant with the OpenGL(R) version 1.2.1 Specification.
+ */
+
+/**
+ * Class responsible for rendering
+ * @author Tomas Hrasky
+ *
+ */
+class Backend {
+
+  /**
+   * Fill surface
+   */
+  public static final int N_MESHFILL = 0;
+
+  /**
+   * Draw surface as wire model
+   */
+  public static final int N_MESHLINE = 1;
+
+  /**
+   * Draw surface with points
+   */
+  public static final int N_MESHPOINT = 2;
+
+  /**
+   * Object rendering curves
+   */
+  private OpenGLCurveEvaluator curveEvaluator;
+
+  /**
+   * Object rendering surfaces
+   */
+  private OpenGLSurfaceEvaluator surfaceEvaluator;
+
+  /**
+   * Makes new backend 
+   */
+  public Backend() {
+    curveEvaluator = new OpenGLCurveEvaluator();
+    surfaceEvaluator = new OpenGLSurfaceEvaluator();
+  }
+
+  /**
+   * Begin a curve
+   */
+  public void bgncurv() {
+    // DONE
+    curveEvaluator.bgnmap1f();
+
+  }
+
+  /**
+   * End a curve
+   */
+  public void endcurv() {
+    // DONE
+    curveEvaluator.endmap1f();
+
+  }
+
+  /**
+   * Make cuve with given parameters
+   * @param type curve type
+   * @param ps control points
+   * @param stride control points coordinates number
+   * @param order order of curve
+   * @param ulo smallest u
+   * @param uhi highest u
+   */
+  public void curvpts(int type, CArrayOfFloats ps, int stride, int order,
+                      float ulo, float uhi) {
+    // DONE
+    curveEvaluator.map1f(type, ulo, uhi, stride, order, ps);
+    curveEvaluator.enable(type);
+  }
+
+  /**
+   * Draw curve
+   * @param u1 smallest u
+   * @param u2 highest u
+   * @param nu number of pieces
+   */
+  public void curvgrid(float u1, float u2, int nu) {
+    // DONE
+    curveEvaluator.mapgrid1f(nu, u1, u2);
+
+  }
+
+  /**
+   * Evaluates curve mesh
+   * @param from low param
+   * @param n step
+   */
+  public void curvmesh(int from, int n) {
+    // DONE
+    curveEvaluator.mapmesh1f(N_MESHFILL, from, from + n);
+  }
+
+  /**
+   * Begin surface
+   * @param wiretris use triangles
+   * @param wirequads use quads
+   */
+  public void bgnsurf(int wiretris, int wirequads) {
+    // DONE
+    surfaceEvaluator.bgnmap2f();
+
+    if (wiretris > 0)
+      surfaceEvaluator.polymode(NurbsConsts.N_MESHLINE);
+    else
+      surfaceEvaluator.polymode(NurbsConsts.N_MESHFILL);
+  }
+
+  /**
+   * End surface
+   */
+  public void endsurf() {
+    // DONE
+    surfaceEvaluator.endmap2f();
+  }
+
+  /**
+   * Empty method
+   * @param ulo low u param
+   * @param uhi hig u param
+   * @param vlo low v param
+   * @param vhi high v param
+   */
+  public void patch(float ulo, float uhi, float vlo, float vhi) {
+    // DONE
+    surfaceEvaluator.domain2f(ulo, uhi, vlo, vhi);
+  }
+
+  /**
+   * Draw surface
+   * @param u0 lowest u
+   * @param u1 highest u
+   * @param nu number of pieces in u direction
+   * @param v0 lowest v
+   * @param v1 highest v
+   * @param nv number of pieces in v direction
+   */
+  public void surfgrid(float u0, float u1, int nu, float v0, float v1, int nv) {
+    // DONE
+    surfaceEvaluator.mapgrid2f(nu, u0, u1, nv, v0, v1);
+
+  }
+
+  /**
+   * Evaluates surface mesh
+   * @param u u param
+   * @param v v param
+   * @param n step in u direction
+   * @param m step in v direction
+   */
+  public void surfmesh(int u, int v, int n, int m) {
+    //			System.out.println("TODO backend.surfmesh wireframequads");
+    // TODO wireframequads
+    surfaceEvaluator.mapmesh2f(NurbsConsts.N_MESHFILL, u, u + n, v, v + m);
+  }
+
+  /**
+   * Make surface
+   * @param type surface type
+   * @param pts control points
+   * @param ustride control points coordinates in u direction
+   * @param vstride control points coordinates in v direction
+   * @param uorder surface order in u direction
+   * @param vorder surface order in v direction
+   * @param ulo lowest u
+   * @param uhi hightest u
+   * @param vlo lowest v
+   * @param vhi hightest v
+   */
+  public void surfpts(int type, CArrayOfFloats pts, int ustride, int vstride,
+                      int uorder, int vorder, float ulo, float uhi, float vlo, float vhi) {
+    // DONE
+    surfaceEvaluator.map2f(type, ulo, uhi, ustride, uorder, vlo, vhi,
+                           vstride, vorder, pts);
+    surfaceEvaluator.enable(type);
+
+  }
+}
author	Kenneth Russel <kbrussel@alum.mit.edu>	2007-10-09 07:38:10 +0000
committer	Kenneth Russel <kbrussel@alum.mit.edu>	2007-10-09 07:38:10 +0000
commit	c92573e5f90bfefdfa6697a3f628a263c2f211f9 (patch)
tree	53258db2dae2d3a54f9c2f30cd1a55fe163ba958 /src/classes/com/sun/opengl/impl/nurbs/Backend.java
parent	f7b664564d2dcdf674660b5d1fc38c7f2ac25b76 (diff)