koobas.hobune.stream
Horizontal slider and camera
Hello I have a problem with HorizontalSlider and Camera. I need to move the camera with the horizontalSlider. (for zoomIn and ZoomOut)
This is my current code:
public class TopPanelMenu : MonoBehaviour {
public GUIStyle myStyle;
public float hSliderValue = 0.0F;
public Rect sliderRect;
void OnGUI()
{
sliderRect = new Rect(200, 25, 170, 10);
GUI.BeginGroup(new Rect(10.5f, 10.5f, 700, 200));
{
GameObject obj = GameObject.FindGameObjectWithTag("MainCamera");
Camera cam = obj.GetComponent<Camera>() as Camera;
GUI.Box(new Rect(0, 0, 550, 100), "Camera", GUI.skin.GetStyle("box"));
// First button
if (GUI.Button(new Rect(10, 25, 170, 40), "zoom", GUI.skin.GetStyle("button")))
{
}
hSliderValue = GUI.HorizontalSlider(sliderRect, hSliderValue, 0.0f, 10.0f);
cam.transform.Translate(0, 0, hSliderValue);
}
GUI.EndGroup();
}
}
With this code, I can move the camera, but when I move it, this does not stop.
appreciate your help
In the cam.transform.Translate(0, 0, hSliderValue);
You should not to use Translate, you should use position.
cam.transform.position = Vector3(0,0,hSliderValue);
but if you want to zoom in and zoom out, I have a good idea to make it good.
change
cam.transform.Translate(0, 0, hSliderValue);
to
cam.fieldOfView = hSliderValue;
You are right that normally you zoom by changing the FOV, but not linearly. The slider will behave a bit strange that way. The zoo$$anonymous$$g would be much faster / stronger when it comes to small values. Normally you scale the fov by a scale factor.
Translate will result in a relative movement. As long as your hSliderValue is not 0.0 it will move. The actual value will just determine how fast it is moving. Since you only accept values between 0 and 10 you can only move "forward".
I guess you don't intended an accelerated movement ;) so translate is not the right function for your problem then.
Vector3 camPosition = cam.transform.position;
camPosition.z = hSliderValue;
cam.transform.position = camPosition;
If your camera should move from it's start position 0-10 forward you should save the start z value and add it: camPosition.z = hSliderValue + startValue;
If you wanted an accelerated movement it gets a bit tricky. You should define a deadzone around 0 and the slider value should go from -10 to 10. You should also multiply the movement by Time.deltaTime to make the movement framerate-independent.
ohh and btw. this code:
GameObject obj = GameObject.FindGameObjectWithTag("MainCamera");
Camera cam = obj.GetComponent<Camera>() as Camera;
is exactly the same as
Camera cam = Camera.main;
Thank you very much by your help
I understand the Bunny83 idea, I did not think adding the current position in the z axis of the camera.
