Examples with Direction com.jme3.terrain.geomipmap.picking.BresenhamYUpGridTracer.Direction used on opensource projects

Example 51 with Direction

use of com.jme3.terrain.geomipmap.picking.BresenhamYUpGridTracer.Direction in project jmonkeyengine by jMonkeyEngine.

the class BresenhamYUpGridTracer method startWalk.

public void startWalk(final Ray walkRay) {
    // store ray
    this.walkRay.set(walkRay);
    // simplify access to direction
    Vector3f direction = this.walkRay.getDirection();
    // Move start point to grid space
    Vector3f start = this.walkRay.getOrigin().subtract(gridOrigin);
    gridLocation.x = (int) (start.x / gridSpacing.x);
    gridLocation.y = (int) (start.z / gridSpacing.z);
    Vector3f ooDirection = new Vector3f(1.0f / direction.x, 1, 1.0f / direction.z);
    // Check which direction on the X world axis we are moving.
    if (direction.x > TOLERANCE) {
        distToNextXIntersection = ((gridLocation.x + 1) * gridSpacing.x - start.x) * ooDirection.x;
        distBetweenXIntersections = gridSpacing.x * ooDirection.x;
        stepXDirection = 1;
    } else if (direction.x < -TOLERANCE) {
        distToNextXIntersection = (start.x - (gridLocation.x * gridSpacing.x)) * -direction.x;
        distBetweenXIntersections = -gridSpacing.x * ooDirection.x;
        stepXDirection = -1;
    } else {
        distToNextXIntersection = Float.MAX_VALUE;
        distBetweenXIntersections = Float.MAX_VALUE;
        stepXDirection = 0;
    }
    // Check which direction on the Z world axis we are moving.
    if (direction.z > TOLERANCE) {
        distToNextZIntersection = ((gridLocation.y + 1) * gridSpacing.z - start.z) * ooDirection.z;
        distBetweenZIntersections = gridSpacing.z * ooDirection.z;
        stepZDirection = 1;
    } else if (direction.z < -TOLERANCE) {
        distToNextZIntersection = (start.z - (gridLocation.y * gridSpacing.z)) * -direction.z;
        distBetweenZIntersections = -gridSpacing.z * ooDirection.z;
        stepZDirection = -1;
    } else {
        distToNextZIntersection = Float.MAX_VALUE;
        distBetweenZIntersections = Float.MAX_VALUE;
        stepZDirection = 0;
    }
    // Reset some variables
    rayLocation.set(start);
    rayLength = 0.0f;
    stepDirection = Direction.None;
}

Example 52 with Direction

use of com.jme3.terrain.geomipmap.picking.BresenhamYUpGridTracer.Direction in project jmonkeyengine by jMonkeyEngine.

the class VRGuiManager method rotateScreenTo.

/**
	 * Rotate the GUI to the given direction.
	 * @param dir the direction to rotate to.
	 * @param tpf the time per frame.
	 */
private void rotateScreenTo(Quaternion dir, float tpf) {
    dir.getRotationColumn(2, look).negateLocal();
    dir.getRotationColumn(0, left).negateLocal();
    orient.fromAxes(left, dir.getRotationColumn(1, up), look);
    Quaternion rot = tempq.fromRotationMatrix(orient);
    if (posMode == VRGUIPositioningMode.AUTO_CAM_ALL_SKIP_PITCH) {
        VRUtil.stripToYaw(rot);
    }
    if (guiPositioningElastic > 0f && posMode != VRGUIPositioningMode.MANUAL) {
        // mix pos & dir with current pos & dir            
        EoldDir.nlerp(rot, tpf * guiPositioningElastic);
        guiQuadNode.setLocalRotation(EoldDir);
    } else {
        guiQuadNode.setLocalRotation(rot);
    }
}