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using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public static class CameraExtend
{
public static Vector3 WorldToCameraSpace(this Camera camera, Vector3 worldPos)
{
Vector4 camPos = camera.worldToCameraMatrix * worldPos.ToVector4();
return camPos.ToVector3();
}
public static Vector3 CameraToViewportSpace(this Camera camera, Vector3 camPos)
{
Matrix4x4 proj = GL.GetGPUProjectionMatrix(camera.projectionMatrix, false);
Vector4 clipPos = proj * camPos.ToVector4();
Vector3 ndcPos = (clipPos / clipPos.w);
Vector3 viewPos = (ndcPos + Vector3.one) / 2f;
return viewPos;
}
public static Vector3 CameraToScreenSpace(this Camera camera, Vector3 camPos)
{
Vector3 viewPos = camera.CameraToViewportSpace(camPos);
Vector3 screenPos = new Vector3(
viewPos.x * camera.pixelWidth,
viewPos.y * camera.pixelHeight,
viewPos.z
);
return screenPos;
}
}
public class CameraUtility : MonoBehaviour
{
// Start is called before the first frame update
void Start()
{
}
// Update is called once per frame
void Update()
{
}
}
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