本文整理匯總了Java中com.jme3.math.Vector2f.distance方法的典型用法代碼示例。如果您正苦於以下問題：Java Vector2f.distance方法的具體用法？Java Vector2f.distance怎麽用？Java Vector2f.distance使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類com.jme3.math.Vector2f的用法示例。
在下文中一共展示了Vector2f.distance方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: minimum_distance
import com.jme3.math.Vector2f; //導入方法依賴的package包/類
float minimum_distance(Vector2f v, Vector2f w, Vector2f p) {
// Return minimum distance between line segment vw and point p
float l2 = v.distanceSquared(w); // i.e. |w-v|^2 - avoid a sqrt
if (l2 == 0.0) {
return p.distance(v); // v == w case
}
// Consider the line extending the segment, parameterized as v + t (w - v).
// We find projection of point p onto the line.
// It falls where t = [(p-v) . (w-v)] / |w-v|^2
// We clamp t from [0,1] to handle points outside the segment vw.
float t = Math.max(0, Math.min(1, (p.subtract(v)).dot(w.subtract(v)) / l2));
Vector2f projection = v.add(w.subtract(v).multLocal(t)); // Projection falls on the segment
return p.distance(projection);
}
示例2: processTransform
import com.jme3.math.Vector2f; //導入方法依賴的package包/類
@Override
public void processTransform() {
final EditorTransformSupport editorControl = getEditorControl();
final LocalObjects local = LocalObjects.get();
final Camera camera = editorControl.getCamera();
final InputManager inputManager = EDITOR.getInputManager();
final Transform transform = notNull(editorControl.getTransformCenter());
// cursor position and selected position vectors
final Vector2f cursorPos = inputManager.getCursorPosition();
final Vector3f transformOnScreen = camera.getScreenCoordinates(transform.getTranslation(), local.nextVector());
final Vector2f selectedCoords = local.nextVector(transformOnScreen.getX(), transformOnScreen.getY());
// set new deltaVector if it's not set (scale tool stores position of a cursor)
if (Float.isNaN(editorControl.getTransformDeltaX())) {
editorControl.setTransformDeltaX(cursorPos.getX());
editorControl.setTransformDeltaY(cursorPos.getY());
}
final Node parentNode = getParentNode();
final Node childNode = getChildNode();
// Picked vector
final Spatial toTransform = notNull(editorControl.getToTransform());
final TransformationMode transformationMode = editorControl.getTransformationMode();
transformationMode.prepareToScale(parentNode, childNode, transform, camera);
// scale according to distance
final Vector3f deltaVector = local.nextVector(editorControl.getTransformDeltaX(), editorControl.getTransformDeltaY(), 0F);
final Vector2f delta2d = local.nextVector(deltaVector.getX(), deltaVector.getY());
final Vector3f baseScale = local.nextVector(transform.getScale()); // default scale
final Vector3f pickedVector = local.nextVector(transformationMode.getScaleAxis(transform, editorControl.getPickedAxis(), camera));
pickedVector.setX(abs(pickedVector.getX()));
pickedVector.setY(abs(pickedVector.getY()));
pickedVector.setZ(abs(pickedVector.getZ()));
if (Config.DEV_TRANSFORMS_DEBUG) {
System.out.println("Base scale " + baseScale + ", pickedVector " + pickedVector);
}
// scale object
float disCursor = cursorPos.distance(selectedCoords);
float disDelta = delta2d.distance(selectedCoords);
float scaleValue = (float) (cursorPos.distance(delta2d) * 0.01f * Math.sqrt(baseScale.length()));
if (disCursor > disDelta) {
baseScale.addLocal(pickedVector.mult(scaleValue, local.nextVector()));
} else {
scaleValue = Math.min(scaleValue, 0.999f); // remove negateve values
baseScale.subtractLocal(pickedVector.mult(scaleValue, local.nextVector()));
}
parentNode.setLocalScale(baseScale);
if (Config.DEV_TRANSFORMS_DEBUG) {
System.out.println("New scale " + baseScale + ", result world " + childNode.getWorldScale());
}
parentNode.setLocalScale(baseScale);
toTransform.setLocalScale(childNode.getWorldScale());
editorControl.notifyTransformed(toTransform);
}