Дополнена ЛР-1 вариант 8
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@ -13,44 +13,50 @@ public class LR_1_v8 extends Application {
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new LR_1_v8();
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}
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private static final double ARROW_WIDTH = 0.5;
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private static final double ARROW_HEIGHT = 0.2;
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private static final double[][] ARROW_PTS = {
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{0.0, 0.5, 0.4, 0.4, 0.5},
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{0.0, 0.00, 0.2, -0.2, 0.00},
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// x, y
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{0.0, 0.0},
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{ARROW_WIDTH, 0.0},
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{4d * ARROW_WIDTH / 5d, ARROW_HEIGHT},
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{4d * ARROW_WIDTH / 5d, -ARROW_HEIGHT},
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{ARROW_WIDTH, 0.0},
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};
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private static final double N = 30;
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public LR_1_v8() {
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super(900, 480);
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super(900, 500);
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setTitle("LR_1 v8");
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}
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@Override
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protected void paint(GraphicsExt g) {
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double x1 = 0, y1 = 2;
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double x1 = 0, y1 = 2.5;
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for (int i = 0; i < N; i++) {
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double x2 = x1 + (i / 50d);
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final double scaleValue = (i / 24d);
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double x2 = x1 + ARROW_WIDTH * scaleValue;
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double y2 = y1 + Math.sin(x2) / 5d;
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g.reset();
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g.translate(x2, y2);
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g.rotate(-Math.atan2(y2 - y1, x2 - x1));
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drawArrow(g, i);
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x1 = x2;
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drawArrow(g, scaleValue);
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x1 = x1 + ARROW_WIDTH * scaleValue;
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y1 = y2;
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}
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}
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private void drawArrow(GraphicsExt g, int num) {
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final int length = ARROW_PTS[0].length;
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double[][] points = new double[2][length];
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double scale = num / 30d;
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private void drawArrow(GraphicsExt g, double scaleValue) {
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final int length = ARROW_PTS.length;
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double[][] points = new double[length][2];
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for (int i = 0; i < length; i++) {
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points[0][i] = ARROW_PTS[0][i] * scale;
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points[1][i] = ARROW_PTS[1][i] * scale;
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points[i][0] = ARROW_PTS[i][0] * scaleValue;
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points[i][1] = ARROW_PTS[i][1] * scaleValue;
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}
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g.move(points[0][0], points[1][0]);
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g.move(points[0][0], points[0][1]);
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for (int i = 1; i < length; i++) {
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g.draw(points[0][i], points[1][i]);
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g.draw(points[i][0], points[i][1]);
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}
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}
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}
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