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import com.dkt.graphics.canvas.Canvas;
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import com.dkt.graphics.canvas.CanvasFrame;
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import com.dkt.graphics.extras.formula.ParametricCalculable;
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import com.dkt.graphics.extras.formula.ParametricCalculableTimer;
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import com.dkt.graphics.utils.Utils;
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import java.awt.Color;
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public class Parametric {
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public static void main(String[] args) {
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//////////////////////////////////////////////////////////
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//The name that appears in the window
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String title = "Parametric example";
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//We need to create a new frame
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CanvasFrame frame = new CanvasFrame(title);
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//And make it visible
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frame.setVisible(true);
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//Set a size in pixels (whichever you want)
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frame.setSize(550/*width*/, 550/*height*/);
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//Extract a reference to the canvas from the frame
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final Canvas canvas = frame.getCanvas();
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//Tell the canvas to center the origin of coordinates,
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//which by default is located in the upper left corner
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canvas.setCenterOrigin(true);
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//Tell the canvas to invert the Y axis, this way we will
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//consider all positive Y increments from the origin of
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//coordinates to the title bar
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canvas.setInvertYAxis(true);
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//////////////////////////////////////////////////////////
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canvas.setAutoRepaint(true);
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canvas.setRepaintDelay(35);
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final double a = 1;
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final double b = 60;
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final double c = 1;
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final double d = 1;
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final double e = 60;
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final double i = 1;
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final double j = 2;
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ParametricCalculable eq = new ParametricCalculable() {
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@Override
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public double x(double t) {
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return i * Math.cos(a * t) - Math.cos(b * t) * Math.sin(c * t);
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}
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@Override
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public double y(double t) {
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return j * Math.sin(d * t) - Math.sin(e * t);
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}
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};
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eq.setScaleX(80);
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eq.setScaleY(80);
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eq.startPoint(0);
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eq.endPoint(2 * Math.PI);
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eq.step(0.000001);
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ParametricCalculableTimer timer = new ParametricCalculableTimer(eq);
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timer.setPaint(Utils.getColorWithAlpha(Color.BLUE, 64));
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canvas.add(timer);
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timer.start();
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}
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}
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