本文整理汇总了Java中java.awt.geom.Ellipse2D.getWidth方法的典型用法代码示例。如果您正苦于以下问题：Java Ellipse2D.getWidth方法的具体用法？Java Ellipse2D.getWidth怎么用？Java Ellipse2D.getWidth使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类java.awt.geom.Ellipse2D的用法示例。
在下文中一共展示了Ellipse2D.getWidth方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: getObstructedVisionArea
import java.awt.geom.Ellipse2D; //导入方法依赖的package包/类
/**
* Gets the obstructed vision area.
*
* @param mob
* the mob
* @param center
* the center
* @return the obstructed vision area
*/
private Area getObstructedVisionArea(final IEntity mob, final Point2D center) {
final Polygon shadowPolygon = new Polygon();
final Ellipse2D shadowEllipse = getShadowEllipse(mob);
final Rectangle2D bounds = shadowEllipse.getBounds2D();
// radius of Entity's bounding circle
final float r = (float) bounds.getWidth() / 2f;
final float ry = (float) bounds.getHeight() / 2f;
// get relative center of entity
final Point2D relativeCenter = Game.getCamera().getViewPortLocation(new Point((int) (bounds.getX() + r), (int) (bounds.getY() + ry)));
final double cx = relativeCenter.getX();
final double cy = relativeCenter.getY();
// get direction from light to entity center
final double dx = cx - center.getX();
final double dy = cy - center.getY();
// get euclidean distance from entity to center
final double distSq = dx * dx + dy * dy; // avoid sqrt for performance
// normalize the direction to a unit vector
final float len = (float) Math.sqrt(distSq);
double nx = dx;
double ny = dy;
if (len != 0) { // avoid division by 0
nx /= len;
ny /= len;
}
// get perpendicular of unit vector
final double px = -ny;
final double py = nx;
// our perpendicular points in either direction from radius
final Point2D.Double pointA = new Point2D.Double(cx - px * r, cy - py * ry);
final Point2D.Double pointB = new Point2D.Double(cx + px * r, cy + py * ry);
// project the points by our SHADOW_EXTRUDE amount
final Point2D pointC = GeometricUtilities.project(center, pointA, OBSTRUCTED_VISION_RADIUS);
final Point2D pointD = GeometricUtilities.project(center, pointB, OBSTRUCTED_VISION_RADIUS);
// construct a polygon from our points
shadowPolygon.reset();
shadowPolygon.addPoint((int) pointA.getX(), (int) pointA.getY());
shadowPolygon.addPoint((int) pointB.getX(), (int) pointB.getY());
shadowPolygon.addPoint((int) pointD.getX(), (int) pointD.getY());
shadowPolygon.addPoint((int) pointC.getX(), (int) pointC.getY());
final Point2D shadowRenderLocation = Game.getCamera().getViewPortLocation(new Point2D.Double(shadowEllipse.getX(), shadowEllipse.getY()));
final Ellipse2D relativeEllipse = new Ellipse2D.Double(shadowRenderLocation.getX(), shadowRenderLocation.getY(), shadowEllipse.getWidth(), shadowEllipse.getHeight());
final Area ellipseArea = new Area(relativeEllipse);
final Area shadowArea = new Area(shadowPolygon);
shadowArea.add(ellipseArea);
return shadowArea;
}