1 files changed, 214 insertions, 0 deletions
diff --git a/src/classes/com/sun/opengl/impl/nurbs/OpenGLSurfaceEvaluator.java b/src/classes/com/sun/opengl/impl/nurbs/OpenGLSurfaceEvaluator.java
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index 000000000..2c31bc2bc
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+++ b/src/classes/com/sun/opengl/impl/nurbs/OpenGLSurfaceEvaluator.java
@@ -0,0 +1,214 @@
+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.
+ */
+
+import javax.media.opengl.GL;
+import javax.media.opengl.glu.GLU;
+
+/**
+ * Class rendering surfaces with OpenGL
+ * @author Tomas Hrasky
+ *
+ */
+class OpenGLSurfaceEvaluator {
+
+  /**
+   * JOGL OpenGL object
+   */
+  private GL gl;
+
+  /**
+   * Output triangles (callback)
+   */
+  private boolean output_triangles;
+
+  /**
+   * Number of patch - used for distinguishing bezier plates forming NURBS surface with different colors
+   */
+  private int poradi;
+
+  /**
+   * Creates new evaluator
+   */
+  public OpenGLSurfaceEvaluator() {
+    gl = GLU.getCurrentGL();
+  }
+
+  /**
+   * Pushes eval bit
+   */
+  public void bgnmap2f() {
+
+    if (output_triangles) {
+      // TODO outp triangles surfaceevaluator bgnmap2f
+      //			System.out.println("TODO surfaceevaluator.bgnmap2f output triangles");
+    } else {
+      gl.glPushAttrib(GL.GL_EVAL_BIT);
+      //				System.out.println("TODO surfaceevaluator.bgnmap2f glgetintegerv");
+    }
+
+  }
+
+  /**
+   * Sets  glPolygonMode
+   * @param style polygon mode (N_MESHFILL/N_MESHLINE/N_MESHPOINT)
+   */
+  public void polymode(int style) {
+    if (!output_triangles) {
+      switch (style) {
+      default:
+      case NurbsConsts.N_MESHFILL:
+        gl.glPolygonMode(GL.GL_FRONT_AND_BACK, GL.GL_FILL);
+        break;
+      case NurbsConsts.N_MESHLINE:
+        gl.glPolygonMode(GL.GL_FRONT_AND_BACK, GL.GL_LINE);
+        break;
+      case NurbsConsts.N_MESHPOINT:
+        gl.glPolygonMode(GL.GL_FRONT_AND_BACK, GL.GL_POINT);
+        break;
+      }
+    }
+
+  }
+
+  /**
+   * Pops all attributes
+   */
+  public void endmap2f() {
+    // TODO Auto-generated method stub
+    if (output_triangles) {
+      //			System.out.println("TODO surfaceevaluator.endmap2f output triangles");
+    } else {
+      gl.glPopAttrib();
+      // TODO use LOD
+    }
+  }
+
+  /**
+   * Empty method
+   * @param ulo
+   * @param uhi
+   * @param vlo
+   * @param vhi
+   */
+  public void domain2f(float ulo, float uhi, float vlo, float vhi) {
+    // DONE
+  }
+
+  /**
+   * Defines 2D mesh
+   * @param nu number of steps in u direction
+   * @param u0 lowest u
+   * @param u1 highest u
+   * @param nv number of steps in v direction
+   * @param v0 lowest v
+   * @param v1 highest v
+   */
+  public void mapgrid2f(int nu, float u0, float u1, int nv, float v0, float v1) {
+
+    if (output_triangles) {
+      //			System.out.println("TODO openglsurfaceavaluator.mapgrid2f output_triangles");
+    } else {
+      gl.glMapGrid2d(nu, u0, u1, nv, v0, v1);
+    }
+
+  }
+
+  /**
+   * Evaluates surface
+   * @param style surface style
+   * @param umin minimum U
+   * @param umax maximum U
+   * @param vmin minimum V
+   * @param vmax maximum V
+   */
+  public void mapmesh2f(int style, int umin, int umax, int vmin, int vmax) {
+    if (output_triangles) {
+      //			System.out.println("TODO openglsurfaceavaluator.mapmesh2f output_triangles");
+    } else {
+      /* //DEBUG - draw control points
+         this.poradi++;
+         if (poradi % 2 == 0)
+         gl.glColor3f(1, 0, 0);
+         else if (poradi % 2 == 1)
+         gl.glColor3f(0, 1, 0);
+      */
+      switch (style) {
+      case NurbsConsts.N_MESHFILL:
+        gl.glEvalMesh2(GL.GL_FILL, umin, umax, vmin, vmax);
+        break;
+      case NurbsConsts.N_MESHLINE:
+        gl.glEvalMesh2(GL.GL_LINE, umin, umax, vmin, vmax);
+        break;
+      case NurbsConsts.N_MESHPOINT:
+        gl.glEvalMesh2(GL.GL_POINT, umin, umax, vmin, vmax);
+        break;
+      }
+    }
+  }
+
+  /**
+   * Initializes evaluator
+   * @param type surface type
+   * @param ulo lowest u
+   * @param uhi highest u
+   * @param ustride number of objects between control points in u direction
+   * @param uorder surface order in u direction
+   * @param vlo lowest v
+   * @param vhi highest v
+   * @param vstride number of control points' coords
+   * @param vorder surface order in v direction
+   * @param pts control points
+   */
+  public void map2f(int type, float ulo, float uhi, int ustride, int uorder,
+                    float vlo, float vhi, int vstride, int vorder, CArrayOfFloats pts) {
+    // TODO Auto-generated method stub
+    if (output_triangles) {
+      //			System.out.println("TODO openglsurfaceevaluator.map2f output_triangles");
+    } else {
+      gl.glMap2f(type, ulo, uhi, ustride, uorder, vlo, vhi, vstride,
+                 vorder, pts.getArray(), pts.getPointer());
+    }
+  }
+
+  /**
+   * Calls opengl enable
+   * @param type what to enable
+   */
+  public void enable(int type) {
+    //DONE
+    gl.glEnable(type);
+  }
+}