float getAngle(int t, Camera camera)
{
Mesh m = getMesh();
Vector3 a = worldVertices[m.triangles[t * 3 + 0]];
Vector3 b = worldVertices[m.triangles[t * 3 + 1]];
Vector3 c = worldVertices[m.triangles[t * 3 + 2]];
Plane plane = new Plane(a, b, c);
Vector3 norm = plane.normal;
Vector3 dirProjector = camera.transform.forward;
float angle = Vector3.Angle(norm, -dirProjector);
if (debug)
{
Debug.Log("normal:" + norm);
Math3DUtils.CreateSphere(a, Color.gray);
Debug.DrawRay(a, norm, Color.white, 100);
Debug.DrawRay(a, -dirProjector, Color.black, 100);
Debug.Log("dir:" + this.transform.forward);
Debug.Log("Angle:" + angle); // mod 90
}
return(angle);
}
// Draw a corner if the 3 spawnedWalls intersect at a single point
private void DrawOneCorner(GameObject s0, GameObject s1, GameObject s2)
{
Vector3 point;
bool success = Math3DUtils.planesIntersectAtSinglePoint(s0, s1, s2, out point);
if (success)
{
GameObject go = Math3DUtils.CreateSphere(point, Color.yellow, 0.1f);
ui3dGOs.Add(go);
go.name = "Corner";
GameObject line0 = DrawCornerLine(point, s0, s1, s2);
GameObject line1 = DrawCornerLine(point, s1, s2, s0);
GameObject line2 = DrawCornerLine(point, s2, s0, s1);
if (line0)
{
line0.transform.parent = go.transform;
}
if (line1)
{
line1.transform.parent = go.transform;
}
if (line2)
{
line2.transform.parent = go.transform;
}
AddPointToWall(s0, point);
AddPointToWall(s1, point);
AddPointToWall(s2, point);
}
}
public string fn = null; //dir + image name eg "2020-12-24_143059/2020-12-24_143059....jpg"
// Draw frame and put it 1m far from camera
void Start()
{
this.name = "Projector " + fn;
//load texture
if (!String.IsNullOrEmpty(fn)) //otherwise display already loaded texture projectcube.jpg
{
string path = UnityEngine.Application.persistentDataPath + "/" + fn;
if (!System.IO.File.Exists(path))
{
Debug.LogError("file not found: " + path);
}
byte[] fileData = System.IO.File.ReadAllBytes(path);
Texture2D tex = new Texture2D(1, 1);
tex.LoadImage(fileData); //load also width/height
plane.GetComponent <Renderer>().material.mainTexture = tex;
//project texture
this.GetComponent <Projector>().material = new Material(Shader.Find("Projector/Multiply"));
Material thisProjectorMat = this.GetComponent <Projector>().material;
thisProjectorMat.SetTexture("_ShadowTex", tex);
thisProjectorMat.SetTexture("_FalloffTex", tex);
this.GetComponent <Projector>().material = thisProjectorMat;
w = tex.width;
h = tex.height;
}
else
{
w = 4618;
h = 3464;
}
this.GetComponent <Camera>().aspect = this.GetComponent <Projector>().aspectRatio = (float)w / h;
this.GetComponent <Camera>().fieldOfView = this.GetComponent <Projector>().fieldOfView = this.vfov;
float hfov = getHorizontalFov();
Debug.Log("vfov:" + this.vfov + " hfov:" + hfov + " w:" + w + " h:" + h + " fn:" + fn);
var halfw = getHalfWidth();
var halfh = getHalfHeight();
Vector3 centerplane = this.transform.position + this.transform.forward * far; //an alternative is to use go.transform.Translate
plane.transform.position = centerplane;
plane.transform.localScale = new Vector3(halfw * 2f, halfh * 2f, 1f);
Vector3 ne = ProjectOnPlaneViewport(new Vector2(1, 1));
Vector3 se = ProjectOnPlaneViewport(new Vector2(1, 0));
Vector3 sw = ProjectOnPlaneViewport(new Vector2(0, 0));
Vector3 nw = ProjectOnPlaneViewport(new Vector2(0, 1));
Debug.DrawLine(this.transform.position, centerplane, Color.blue, 99f);
Debug.DrawLine(this.transform.position, ne, Color.white, 99f);
Debug.DrawLine(this.transform.position, se, Color.white, 99f);
Debug.DrawLine(this.transform.position, sw, Color.white, 99f);
Debug.DrawLine(this.transform.position, nw, Color.white, 99f);
Math3DUtils.CreateSphere(ne, Color.red, 0.01f).transform.parent = this.transform;
Math3DUtils.CreateSphere(se, Color.red, 0.01f).transform.parent = this.transform;
Math3DUtils.CreateSphere(sw, Color.red, 0.01f).transform.parent = this.transform;
Math3DUtils.CreateSphere(nw, Color.red, 0.01f).transform.parent = this.transform;
//https://forum.unity.com/threads/solved-image-projection-shader.254196/
}
