I have been following a series of rts tutorials, currently up to 45 out of 81, the error started happening on the 41st video and was not resolved by the end of that series, perhaps an update to unity changed the way this works because the tutorial maker did not seem to have a problem. Here is that 41st vid, incase it helps someone to understand my issue. Unity - All About Trigger Events + Example
It deals with generating a mesh and applying it to the camera, moving the vertices and using the mesh collision to aid in detecting units selected with the mouse.
It works great until the error comes up, If I continue to play past the error it still works, however sometimes the framerate drops from over 1000 to about 4.
ConvexMesh::loadConvexHull: convex hull init failed!
createHull: convex hull computation failed!
those are the two errors that keep popping up, I can’t understand why… it is nowhere near 255 tris.
the errors refer to three lines of code right at the end of the UpdateDragBoxMesh function, each line getting both errors… but all the code does what it is supposed too, the errors are spread out and seem random
these are the lines.
meshc.sharedMesh = mesh;
DragSelectMesh.transform.Translate(0.1f, 0, 0);
DragSelectMesh.transform.Translate(-0.1f, 0, 0);
UpdateDragBoxMesh is being called from LateUpdate when I’m performing a mouse drag.
I’m not sure how much of the script I should put here, since these are pretty big I will just include the updatebox and createbox functions… Basically I’m just hoping someone will be able to spot why this is giving me such a headache at the moment.
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public void UpdateDragBoxMesh()
{
MeshCollider meshc = DragSelectMesh.GetComponent();
meshc.sharedMesh = null;
Vector2 p0Ratio = new Vector2(boxFinish.x / (Screen.width * 0.01f) * 0.01f, (boxFinish.y + Mathf.Abs(boxHeight)) / (Screen.height * 0.01f) * 0.01f);
Vector2 p1Ratio = new Vector2(boxStart.x / (Screen.width * 0.01f) * 0.01f, boxStart.y / (Screen.height * 0.01f) * 0.01f);
Vector2 p2Ratio = new Vector2(boxStart.x / (Screen.width * 0.01f) * 0.01f, (boxStart.y - Mathf.Abs (boxHeight)) / (Screen.height * 0.01f) * 0.01f);
Vector2 p3Ratio = new Vector2(boxFinish.x / (Screen.width * 0.01f) * 0.01f, boxFinish.y / (Screen.height * 0.01f) * 0.01f);
ClipPlanePoints nearClipPlanePoints = CameraClipPlanePoints(Camera.main.nearClipPlane + 30f);
ClipPlanePoints farClipPlanePoints = CameraClipPlanePoints(DistanceFromCameraToGround());
float nearPlaneWidth = Vector3.Distance(nearClipPlanePoints.LowerLeft, nearClipPlanePoints.LowerRight);
float nearPlaneHeight = Vector3.Distance(nearClipPlanePoints.UpperRight, nearClipPlanePoints.LowerRight);
float farPlaneWidth = Vector3.Distance(farClipPlanePoints.LowerLeft, farClipPlanePoints.LowerRight);
float farPlaneHeight = Vector3.Distance(farClipPlanePoints.UpperRight, farClipPlanePoints.LowerRight);
Pointer.transform.position = nearClipPlanePoints.LowerLeft;
Pointer.transform.eulerAngles = Camera.main.transform.eulerAngles;
Pointer.transform.Translate(nearPlaneWidth * p0Ratio.x, nearPlaneHeight * p0Ratio.y, 0f);
Vector3 p0 = Pointer.transform.position;
Pointer.transform.position = nearClipPlanePoints.LowerLeft;
Pointer.transform.Translate(nearPlaneWidth * p1Ratio.x, nearPlaneHeight * p1Ratio.y, 0f);
Vector3 p1 = Pointer.transform.position;
Pointer.transform.position = nearClipPlanePoints.LowerLeft;
Pointer.transform.Translate(nearPlaneWidth * p2Ratio.x, nearPlaneHeight * p2Ratio.y, 0f);
Vector3 p2 = Pointer.transform.position;
Pointer.transform.position = nearClipPlanePoints.LowerLeft;
Pointer.transform.Translate(nearPlaneWidth * p3Ratio.x, nearPlaneHeight * p3Ratio.y, 0f);
Vector3 p3 = Pointer.transform.position;
Pointer.transform.position = farClipPlanePoints.LowerLeft;
Pointer.transform.Translate(farPlaneWidth * p0Ratio.x, farPlaneHeight * p0Ratio.y, 0f);
Vector3 p4 = Pointer.transform.position;
Pointer.transform.position = farClipPlanePoints.LowerLeft;
Pointer.transform.Translate(farPlaneWidth * p1Ratio.x, farPlaneHeight * p1Ratio.y, 0f);
Vector3 p5 = Pointer.transform.position;
Pointer.transform.position = farClipPlanePoints.LowerLeft;
Pointer.transform.Translate(farPlaneWidth * p2Ratio.x, farPlaneHeight * p2Ratio.y, 0f);
Vector3 p6 = Pointer.transform.position;
Pointer.transform.position = farClipPlanePoints.LowerLeft;
Pointer.transform.Translate(farPlaneWidth * p3Ratio.x, farPlaneHeight * p3Ratio.y, 0f);
Vector3 p7 = Pointer.transform.position;
Mesh mesh = DragSelectMesh.GetComponent<MeshFilter>().mesh;
Vector3[] vertices = new Vector3[]
{
// Bottom
p0, p1, p2, p3,
// Left
p7, p4, p0, p3,
// Front
p4, p5, p1, p0,
// Back
p6, p7, p3, p2,
// Right
p5, p6, p2, p1,
// Top
p7, p6, p5, p4
};
mesh.vertices = vertices;
meshc.sharedMesh = mesh;
DragSelectMesh.transform.Translate(0.1f, 0, 0);
DragSelectMesh.transform.Translate(-0.1f, 0, 0);
}
And here is the Create method
public void CreateDragBoxMesh()
{
DragSelectMesh = new GameObject();
DragSelectMesh.name = "DragSelectMesh";
DragSelectMesh.transform.position = Vector3.zero;
//MeshRenderer renderer = DragSelectMesh.AddComponent<MeshRenderer>();
//renderer.material = DragSelectMeshMat;
MeshFilter filter = DragSelectMesh.AddComponent<MeshFilter>();
Mesh mesh = filter.mesh;
mesh.Clear();
float length = 20f;
float width = 20f;
float height = 20f;
#region Vertices
Vector3 p0 = new Vector3( -length * .5f, -width * .5f, height * .5f );
Vector3 p1 = new Vector3( length * .5f, -width * .5f, height * .5f );
Vector3 p2 = new Vector3( length * .5f, -width * .5f, -height * .5f );
Vector3 p3 = new Vector3( -length * .5f, -width * .5f, -height * .5f );
Vector3 p4 = new Vector3( -length * .5f, width * .5f, height * .5f );
Vector3 p5 = new Vector3( length * .5f, width * .5f, height * .5f );
Vector3 p6 = new Vector3( length * .5f, width * .5f, -height * .5f );
Vector3 p7 = new Vector3( -length * .5f, width * .5f, -height * .5f );
Vector3[] vertices = new Vector3[]
{
// Bottom
p0, p1, p2, p3,
// Left
p7, p4, p0, p3,
// Front
p4, p5, p1, p0,
// Back
p6, p7, p3, p2,
// Right
p5, p6, p2, p1,
// Top
p7, p6, p5, p4
};
#endregion
#region Normals
Vector3 up = Vector3.up;
Vector3 down = Vector3.down;
Vector3 front = Vector3.forward;
Vector3 back = Vector3.back;
Vector3 left = Vector3.left;
Vector3 right = Vector3.right;
Vector3[] normals = new Vector3[]
{
// Bottom
down, down, down, down,
// Left
left, left, left, left,
// Front
front, front, front, front,
// Back
back, back, back, back,
// Right
right, right, right, right,
// Top
up, up, up, up
};
#endregion
#region UVs
Vector2 _00 = new Vector2( 0f, 0f );
Vector2 _10 = new Vector2( 1f, 0f );
Vector2 _01 = new Vector2( 0f, 1f );
Vector2 _11 = new Vector2( 1f, 1f );
Vector2[] uvs = new Vector2[]
{
// Bottom
_11, _01, _00, _10,
// Left
_11, _01, _00, _10,
// Front
_11, _01, _00, _10,
// Back
_11, _01, _00, _10,
// Right
_11, _01, _00, _10,
// Top
_11, _01, _00, _10,
};
#endregion
#region Triangles
int[] triangles = new int[]
{
// Bottom
3, 1, 0,
3, 2, 1,
// Left
3 + 4 * 1, 1 + 4 * 1, 0 + 4 * 1,
3 + 4 * 1, 2 + 4 * 1, 1 + 4 * 1,
// Front
3 + 4 * 2, 1 + 4 * 2, 0 + 4 * 2,
3 + 4 * 2, 2 + 4 * 2, 1 + 4 * 2,
// Back
3 + 4 * 3, 1 + 4 * 3, 0 + 4 * 3,
3 + 4 * 3, 2 + 4 * 3, 1 + 4 * 3,
// Right
3 + 4 * 4, 1 + 4 * 4, 0 + 4 * 4,
3 + 4 * 4, 2 + 4 * 4, 1 + 4 * 4,
// Top
3 + 4 * 5, 1 + 4 * 5, 0 + 4 * 5,
3 + 4 * 5, 2 + 4 * 5, 1 + 4 * 5,
};
#endregion
mesh.vertices = vertices;
mesh.normals = normals;
mesh.uv = uvs;
mesh.triangles = triangles;
mesh.RecalculateBounds();
mesh.Optimize();
DragSelectMesh.AddComponent<DragMeshTrigger>();
Rigidbody rigidbody = DragSelectMesh.AddComponent<Rigidbody>();
rigidbody.useGravity = false;
MeshCollider meshc = DragSelectMesh.AddComponent<MeshCollider>();
meshc.isTrigger = true;
meshc.convex = true;
meshc.sharedMesh = filter.mesh;
}