Android AR：在iPhone屏幕上绘制点（POI或标记）

在iPhone屏幕上绘制时，计算x坐标时出现问题。当点位于300米范围内时，我们会使所有感兴趣的点靠近，尽管实际上它们是分散的。我甚至将视口的宽度从0.5更改为0.17（以度为单位，将28.647889757转换为10.0）.任何人都可以建议将每个兴趣点相对于实际位置正确放置

AR上计算点的标准方法（Mixare、ARToolkit）为

使用ARKit计算

double pointAzimuth = coordinate.coordinateAzimuth;

//our x numbers are left based.
double leftAzimuth = self.currentCoordinate.coordinateAzimuth - VIEWPORT_WIDTH_RADIANS / 2.0;

if (leftAzimuth < 0.0) {
    leftAzimuth = 2 * M_PI + leftAzimuth;
}

if (pointAzimuth < leftAzimuth) {
    //it's past the 0 point.
    point.x = ((2 * M_PI - leftAzimuth + pointAzimuth) / VIEWPORT_WIDTH_RADIANS) * 480.0;
} else {
    point.x = ((pointAzimuth - leftAzimuth) / VIEWPORT_WIDTH_RADIANS) * 480.0;
}

双点方位角=坐标.coordinateAzimuth；
//我们的x号是左基的。
双左方位角=self.currentCoordination.coordinateAzimuth-视口宽度弧度/2.0；
如果（左方位角<0.0）{
左方位角=2*M_π+左方位角；
}
if（点方位角<左方位角）{
//已经过了0点了。
点x=（（2*M_PI-左方位角+点方位角）/视口宽度×弧度）*480.0；
}否则{
点x=（（点方位角-左方位角）/视口宽度/弧度）*480.0；
}

在Mixare中：

CGPoint point;
CGRect viewBounds = self.overlayView.bounds;
//NSLog(@"pointForCoordinate:   viewBounds.size.width = %.3f, height = %.3f", viewBounds.size.width, viewBounds.size.height );

double currentAzimuth = self.currentCoordinate.coordinateAzimuth;
double pointAzimuth = coordinate.coordinateAzimuth;


//NSLog(@"pointForCoordinate: location = %@, pointAzimuth = %.3f, pointInclination = %.3f, currentAzimuth = %.3f", coordinate.coordinateTitle, point.x, point.y, radiansToDegrees(pointAzimuth), radiansToDegrees(currentAzimuth), radiansToDegrees(pointInclination) );

double deltaAzimuth = [self deltaAzimuthForCoordinate:coordinate];
BOOL isBetweenNorth = [self isNorthForCoordinate:coordinate];

//NSLog(@"pointForCoordinate: (1) currentAzimuth = %.3f, pointAzimuth = %.3f, isNorth = %d", radiansToDegrees(currentAzimuth), radiansToDegrees(pointAzimuth), isBetweenNorth );

//  NSLog(@"pointForCoordinate: deltaAzimuth = %.3f", radiansToDegrees(deltaAzimuth));
//NSLog(@"pointForCoordinate: (2) currentAzimuth = %.3f, pointAzimuth = %.3f, isNorth = %d", radiansToDegrees(currentAzimuth), radiansToDegrees(pointAzimuth), isBetweenNorth );

if ((pointAzimuth > currentAzimuth && !isBetweenNorth) || 
    (currentAzimuth > degreesToRadians(360-self.viewRange) && 
     pointAzimuth < degreesToRadians(self.viewRange))) {

        // Right side of Azimuth            
        point.x = (viewBounds.size.width / 2) + ((deltaAzimuth / degreesToRadians(1)) * 12);  
    } else {

        // Left side of Azimuth
        point.x = (viewBounds.size.width / 2) - ((deltaAzimuth / degreesToRadians(1)) * 12);    
    }   

CGPoint；
CGRect viewBounds=self.overlayView.bounds；
//NSLog（@“pointForCoordinate:viewBounds.size.width=%.3f，height=%.3f”，viewBounds.size.width，viewBounds.size.height）；
双电流方位角=self.currentCoordination.coordinateAzimuth；
双点方位角=坐标.coordinateAzimuth；
//NSLog（@“点坐标：位置=%@，点方位=%.3f，点倾角=%.3f，当前方位=%.3f”，坐标坐标，点x，点y，弧度度数（点方位角），弧度度数（当前方位角），弧度度数（点倾角））；
双三角方位=[自三角方位力坐标：坐标]；
BOOL isBetweenNorth=[self isNorthForCoordinate:coordinate]；
//NSLog（@“PointFor坐标：（1）当前方位角=%.3f，点方位角=%.3f，isNorth=%d”，弧度度数（当前方位角），弧度度数（点方位角），介于North之间）；
//NSLog（@“PointForCoordination:三角洲方位角=%.3f”，弧度角（三角洲方位角））；
//NSLog（@“PointFor坐标：（2）当前方位角=%.3f，点方位角=%.3f，isNorth=%d”，弧度度数（当前方位角），弧度度数（点方位角），介于North之间）；
如果（（点方位角>当前方位角&&！介于北向之间）|
（当前方位角>度弧度（360自视距）和
点方位角<度弧度（自视距）））{
//方位角右侧
点x=（viewBounds.size.width/2）+（三角洲方位角/度弧度（1））*12；
}否则{
//方位角左侧
点x=（viewBounds.size.width/2）-（三角洲方位角/度弧度（1））*12；
}