added java support in the GIFPlot example

some minor changes where needed in the interface file


git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@331 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/GIFPlot/Java/ortho.java

@@ -0,0 +1,107 @@
+import gifplot;
+
+public class ortho {
+
+  static {
+    System.loadLibrary("jgifplot");
+  };
+
+  public static double func(double x, double y) {
+    double r;
+    double f;
+    r = Math.sqrt(x*x + y*y);
+
+    f = (Math.sin(0.30*r*x)+Math.cos(0.30*r*y))/(1.0+r);
+    return f;
+  }
+
+  public static void main(String argv[]) {
+
+    FrameBuffer f;
+    Plot3D      p3;
+    ColorMap    cm;
+    
+    double      x,y;
+    double      dx,dy;
+    double      z1,z2,z3,z4;
+    int         c1,c2,c3,c4;
+    
+    /* Create a framebuffer */
+
+    f = new FrameBuffer(700,400);
+
+    /* Load a colormap */
+
+    cm = new ColorMap("cm15");
+
+    /* Create a new 2D image */
+
+    f.clear(gifplot.BLACK);
+    p3 = new Plot3D(f,-6.3,-6.3,-1.5,6.3,6.3,1.5);
+
+    /* Set viewing region in 2D plot */
+    
+    p3.setview(50,50,650,350);
+
+    /* Set how far away from the image we are */
+    p3.lookat(20);
+
+    /* Set the field of view for the perspective */
+    
+
+//    Plot3D_autoperspective(p3,40);
+
+    p3.autoortho();
+    
+    /* Now make a plot of a 3D function */
+    
+    /* Make a frame */
+
+    f.noclip();
+    f.box(49,49,650,350,gifplot.WHITE);
+    p3.start();   /* Always call this prior to making an image */
+    p3.clear(gifplot.BLACK);
+    p3.rotu(60);
+    p3.rotz(40);
+    x = -6.3;
+    dx = 0.25;
+    while (x < 6.3) {
+	y = -6.3;
+	dy = 0.25;
+	while (y < 6.3) {
+	    z1 = func(x,y);
+	    z2 = func(x+dx,y);
+	    z3 = func(x+dx,y+dy);
+	    z4 = func(x,y+dy);
+	    c1 = (int) ((z1 + 1.0)*120) + 16;
+	    if (c1 < 16) c1 = 16;
+	    if (c1 > 254) c1 = 254;
+
+	    c2 = (int) ((z2 + 1.0)*120) + 16;
+	    if (c2 < 16) c2 = 16;
+	    if (c2 > 254) c2 = 254;
+
+	    c3 = (int) ((z3 + 1.0)*120) + 16;
+	    if (c3 < 16) c3 = 16;
+	    if (c3 > 254) c3 = 254;
+
+	    c4 = (int) ((z4 + 1.0)*120) + 16;
+	    if (c4 < 16) c4 = 16;
+	    if (c4 > 254) c4= 254;
+
+	    p3.interpquad(x,y,z1,(byte) c1,
+			      x+dx,y,z2,(byte) c2,
+			      x+dx,y+dy,z3,(byte) c3,
+			      x,y+dy,z4,(byte) c4);
+	    y = y + dy;
+	}
+	x = x + dx;
+    }
+    
+    /* Make a GIF file */
+
+    f.writeGIF(cm,"plot.gif");
+
+    System.out.println("Image written to 'plot.gif'");
+  }
+}