c28fa00d6a
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
107 lines
2.1 KiB
Java
107 lines
2.1 KiB
Java
import gifplot;
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public class ortho {
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static {
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System.loadLibrary("jgifplot");
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};
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public static double func(double x, double y) {
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double r;
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double f;
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r = Math.sqrt(x*x + y*y);
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f = (Math.sin(0.30*r*x)+Math.cos(0.30*r*y))/(1.0+r);
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return f;
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}
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public static void main(String argv[]) {
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FrameBuffer f;
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Plot3D p3;
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ColorMap cm;
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double x,y;
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double dx,dy;
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double z1,z2,z3,z4;
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int c1,c2,c3,c4;
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/* Create a framebuffer */
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f = new FrameBuffer(700,400);
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/* Load a colormap */
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cm = new ColorMap("cm15");
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/* Create a new 2D image */
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f.clear(gifplot.BLACK);
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p3 = new Plot3D(f,-6.3,-6.3,-1.5,6.3,6.3,1.5);
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/* Set viewing region in 2D plot */
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p3.setview(50,50,650,350);
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/* Set how far away from the image we are */
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p3.lookat(20);
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/* Set the field of view for the perspective */
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// Plot3D_autoperspective(p3,40);
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p3.autoortho();
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/* Now make a plot of a 3D function */
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/* Make a frame */
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f.noclip();
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f.box(49,49,650,350,gifplot.WHITE);
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p3.start(); /* Always call this prior to making an image */
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p3.clear(gifplot.BLACK);
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p3.rotu(60);
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p3.rotz(40);
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x = -6.3;
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dx = 0.25;
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while (x < 6.3) {
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y = -6.3;
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dy = 0.25;
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while (y < 6.3) {
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z1 = func(x,y);
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z2 = func(x+dx,y);
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z3 = func(x+dx,y+dy);
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z4 = func(x,y+dy);
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c1 = (int) ((z1 + 1.0)*120) + 16;
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if (c1 < 16) c1 = 16;
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if (c1 > 254) c1 = 254;
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c2 = (int) ((z2 + 1.0)*120) + 16;
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if (c2 < 16) c2 = 16;
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if (c2 > 254) c2 = 254;
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c3 = (int) ((z3 + 1.0)*120) + 16;
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if (c3 < 16) c3 = 16;
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if (c3 > 254) c3 = 254;
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c4 = (int) ((z4 + 1.0)*120) + 16;
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if (c4 < 16) c4 = 16;
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if (c4 > 254) c4= 254;
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p3.interpquad(x,y,z1,(byte) c1,
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x+dx,y,z2,(byte) c2,
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x+dx,y+dy,z3,(byte) c3,
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x,y+dy,z4,(byte) c4);
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y = y + dy;
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}
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x = x + dx;
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}
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/* Make a GIF file */
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f.writeGIF(cm,"plot.gif");
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System.out.println("Image written to 'plot.gif'");
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}
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}
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