university-projects/University-GraphMod
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Дополнена ЛР-1 вариант 8

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Victor 2014-02-24 10:00:10 +02:00
parent fac98d3a1b
commit 861e129584
1 changed files with 6 additions and 5 deletions
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11
src/gm/LR_1_v8.java
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@ -17,11 +17,11 @@ public class LR_1_v8 extends Application {
private static final double ARROW_HEIGHT = 0.2; private static final double ARROW_HEIGHT = 0.2;
private static final double[][] ARROW_PTS = { private static final double[][] ARROW_PTS = {
// x, y // x, y
{ARROW_WIDTH, 0.0},
{0.0, 0.0},
{2d * ARROW_WIDTH / 5d, ARROW_HEIGHT},
{2d * ARROW_WIDTH / 5d, -ARROW_HEIGHT},
{0.0, 0.0}, {0.0, 0.0},
{ARROW_WIDTH, 0.0},
{4d * ARROW_WIDTH / 5d, ARROW_HEIGHT},
{4d * ARROW_WIDTH / 5d, -ARROW_HEIGHT},
{ARROW_WIDTH, 0.0},
}; };
private static final double N = 30; private static final double N = 30;
@ -33,6 +33,7 @@ public class LR_1_v8 extends Application {
@Override @Override
protected void paint(GraphicsExt g) { protected void paint(GraphicsExt g) {
drawArrow(g, 1d);
double x1 = 0, y1 = 2.5; double x1 = 0, y1 = 2.5;
for (int i = 0; i < N; i++) { for (int i = 0; i < N; i++) {
final double scaleValue = (i / 24d); final double scaleValue = (i / 24d);
@ -40,7 +41,7 @@ public class LR_1_v8 extends Application {
double y2 = y1 + Math.sin(x2) / 5d; double y2 = y1 + Math.sin(x2) / 5d;
g.reset(); g.reset();
g.translate(x2, y2); g.translate(x2, y2);
g.rotate(-Math.atan2(y2 - y1, x2 - x1)); g.rotate(Math.atan2(y2 - y1, x1 - x2));
drawArrow(g, scaleValue); drawArrow(g, scaleValue);
x1 = x1 + ARROW_WIDTH * scaleValue; x1 = x1 + ARROW_WIDTH * scaleValue;
y1 = y2; y1 = y2;