57 lines
1.7 KiB
Java
57 lines
1.7 KiB
Java
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package ch.epfl.alpano.dem;
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import static java.awt.image.BufferedImage.TYPE_INT_RGB;
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import static java.lang.Math.*;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.io.IOException;
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import ch.epfl.alpano.*;
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import javax.imageio.ImageIO;
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public final class TestWavyDEM {
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@SuppressWarnings("resource")
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public static void main(String[] args)
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throws IOException {
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DiscreteElevationModel dDEM1 =
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new WavyDEM(new Interval2D(new Interval1D(0, 50),
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new Interval1D(0, 100)));
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DiscreteElevationModel dDEM2 =
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new WavyDEM(new Interval2D(new Interval1D(50, 100),
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new Interval1D(0, 100)));
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DiscreteElevationModel dDEM =
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dDEM1.union(dDEM2);
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ContinuousElevationModel cDEM =
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new ContinuousElevationModel(dDEM);
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int size = 300;
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double scale = (100d / 3600d) / (size - 1);
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BufferedImage elI =
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new BufferedImage(size, size, TYPE_INT_RGB);
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BufferedImage slI =
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new BufferedImage(size, size, TYPE_INT_RGB);
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for (int x = 0; x < size; ++x) {
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for (int y = 0; y < size; ++y) {
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GeoPoint p = new GeoPoint(toRadians(x * scale),
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toRadians(y * scale));
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double el = cDEM.elevationAt(p);
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elI.setRGB(x, y, gray(el / 1000d));
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double sl = cDEM.slopeAt(p);
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slI.setRGB(x, y, gray(sl / (PI / 2d)));
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}
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}
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ImageIO.write(elI, "png", new File("tests/ch/epfl/alpano/dem/elevation.png"));
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ImageIO.write(slI, "png", new File("tests/ch/epfl/alpano/dem/slope.png"));
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}
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private static int gray(double v) {
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double clampedV = max(0, min(v, 1));
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int gray = (int) (255.9999 * clampedV);
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return (gray << 16) | (gray << 8) | gray;
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}
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}
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