angle

Android SensorManager.getOrientation() returns pitch between -PI/2 and PI/2

由 无人久伴 提交于 2019-12-01 09:45:49
问题 I am designing an app that needs to check the device's orientation (Azimuth, Pitch and Roll). I use the following code to achieve this: @Override public void onSensorChanged(SensorEvent event) { if(event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) gravityMatrix = event.values.clone();// Fill gravityMatrix with accelerometer values else if(event.sensor.getType() == Sensor.TYPE_MAGNETIC_FIELD) geomagneticMatrix = event.values.clone();// Fill geomagneticMatrix with magnetic-field sensor

Collision detection : rounded object

由 给你一囗甜甜゛ 提交于 2019-12-01 09:20:01
问题 I'm developing a Java game (but the dev. language doesn't really matter) including rounded objects like balls or pucks, and now working on collisions. I use a timer, so on every frame I check if a collision happens. Here is a graph that represents the top-right piece of an object. The center of the object is represented by the point [0,0], its radius is 10px and the units are pixels. Now if my object (for example, obj_1 ) is square/diamond-shaped (blue line), to find if another one ( obj_2 )

Angle between two known android geolocations

由 六月ゝ 毕业季﹏ 提交于 2019-12-01 08:50:37
I want to find an angle between two known geolocations.Basically what I want is, I want to direct an arrow whose tail point is at my current location and arrow head is pointing towards a fixed geolocation. So I am thinking if somehow, I am able to get an angle between these two geolocations then propably i will be able to do the same. Do you guys have some suggestions to do it in a better manner. Any help would be appreciated. Hyperboreus Refer to this, there are several approaches explained. How do I calculate the Azimuth (angle to north) between two WGS84 coordinates I wanted to achieve the

Intersection between two Arcs? (arc = distance between pair of angles)

由 被刻印的时光 ゝ 提交于 2019-12-01 08:30:40
问题 I'm trying to find a way to calculate the intersection between two arcs. I need to use this to determine how much of an Arc is visually on the right half of a circle, and how much on the left. I though about creating an arc of the right half, and intersect that with the actual arc. But it takes me wayyy to much time to solve this, so I thought about asking here - someone must have done it before. Edit: I'm sorry the previous illustration was provided when my head was too heavy after crunching

Angle between two known android geolocations

由 时光怂恿深爱的人放手 提交于 2019-12-01 05:48:05
问题 I want to find an angle between two known geolocations.Basically what I want is, I want to direct an arrow whose tail point is at my current location and arrow head is pointing towards a fixed geolocation. So I am thinking if somehow, I am able to get an angle between these two geolocations then propably i will be able to do the same. Do you guys have some suggestions to do it in a better manner. Any help would be appreciated. 回答1: Refer to this, there are several approaches explained. How do

How to determine whether V3 is between V1 and V2 when we go from V1 to V2 counterclockwise?

由 半世苍凉 提交于 2019-12-01 05:15:25
I have three vectors V1, V2, and V3. Their origin points are on the axes' origin. How could I determine whether V3 is between V1 and V2 when I move around counterclockwise from V1 to V2? alt text http://www.freeimagehosting.net/uploads/1448ea8896.jpg It can't be done with obtaining their angles and evaluating these kind of conditions (pseudo-code): if angle(V3) > angle(V1) && angle(V3) < angle(V2) printf("V3 is between V1 and V2") else printf("out of the interval") To see its defect, suppose that the angle function gives angles in the range of [-pi pi]. So, if angle(V1) = 120 (in degree),

icon rotation in leaflet package

由 有些话、适合烂在心里 提交于 2019-12-01 05:12:21
问题 I'm learning to program in R with the leaflet package. I want to give an angle to the icons, and am trying it with this code: m <- leaflet() m <- addTiles(m,urlTemplate = "http://xdworld.vworld.kr:8080/2d/Base/201310/{z}/{x}/{y}.png") m = m %>% setView(127.074167,34.456806, zoom = 9) arrowIcon <- makeIcon( iconUrl = "arrow.png" ,iconWidth = 100, iconHeight = 100 ,iconAnchorX = 25, iconAnchorY =25 ) arrowIcon <- makeIcon( iconUrl = "ARROW_B2.png" ,iconWidth = 100, iconHeight = 100 ,iconAnchorX

How to create a div with a diagonal (or angled) top line

由 ∥☆過路亽．° 提交于 2019-12-01 04:13:34
I'm a newbie on CSS3 and all I know is self-learned, reading you guys or any other tutorials so after hours of researching and trial-error, I could really use your help :(. I'm trying to rotate JUST the top line of a div. This is what I did so far: http://blanc-design.com/sigma2/ On the footer, I have rotate two divs to create that effect. But what I want to do is to have a straight bottom line on the green div. This is an example of how I would like it to be: http://blanc-design.com/sigma2/ex.jpg I don't know if I'm explaining myself right. This is the CSS code I've used to rotate the divs:

How to create a div with a diagonal (or angled) top line

由 十年热恋 提交于 2019-12-01 01:29:45
问题 I'm a newbie on CSS3 and all I know is self-learned, reading you guys or any other tutorials so after hours of researching and trial-error, I could really use your help :(. I'm trying to rotate JUST the top line of a div. This is what I did so far: http://blanc-design.com/sigma2/ On the footer, I have rotate two divs to create that effect. But what I want to do is to have a straight bottom line on the green div. This is an example of how I would like it to be: http://blanc-design.com/sigma2

Detecting outer most-edge of image and plotting based on it

由 孤者浪人 提交于 2019-11-30 22:58:04
I'm working on a project that can calculate the angle of an elbow joint by image. The part I'm struggling on is the image processing. Currently doing this in Python using an Intel RealSense R200 (although it can be taken that I'm using an image input). I'm attempting to detect the edges of the left image , such that I can get the center image , aiming to extract the outer contour ( right image ): Knowing that the sides of the two pipes coming out of the angle will be parallel (two orange sides and two green sides are parallel to the same colour)... ... I'm trying to construct 2 loci of points
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