private void DrawClusterGizmo(CameraRig rig, ClusterRenderer clusterRenderer)
{
int totalNodeCount;
if (rig.clusterType == CameraRig.ClusterType.Wall)
totalNodeCount = rig.wallParams.cols * rig.wallParams.rows;
else
totalNodeCount = rig.caveParams.sides + (rig.caveParams.hasFloor ? 1 : 0) + (rig.caveParams.hasSky ? 1 : 0);
for (int i = 0; i < totalNodeCount; ++i)
{
if (m_PreviewingIndex != -1 && m_PreviewingIndex != i)
continue;
float nearLeft = 0.0f;
float nearRight = 0.0f;
float nearBottom = 0.0f;
float nearTop = 0.0f;
// Get the nears
rig.CalculateCameraProjectionFrustum (i, ref nearLeft, ref nearRight, ref nearBottom, ref nearTop);
float ratio = rig.farClip / rig.nearClip;
// Calculate the far
float farLeft = nearLeft * ratio;
float farRight = nearRight * ratio;
float farBottom = nearBottom * ratio;
float farTop = nearTop * ratio;
// Points
Vector3[] near = new Vector3[4];
near[0] = new Vector3 (nearLeft, nearBottom, rig.nearClip);
near[1] = new Vector3 (nearRight, nearBottom, rig.nearClip);
near[2] = new Vector3 (nearRight, nearTop, rig.nearClip);
near[3] = new Vector3 (nearLeft, nearTop, rig.nearClip);
Vector3[] far = new Vector3[4];
far[0] = new Vector3 (farLeft, farBottom, rig.farClip);
far[1] = new Vector3 (farRight, farBottom, rig.farClip);
far[2] = new Vector3 (farRight, farTop, rig.farClip);
far[3] = new Vector3 (farLeft, farTop, rig.farClip);
// Local to world transform (ignore scale of transform)
Matrix4x4 localToWorld;
if (rig.clusterType == CameraRig.ClusterType.Wall)
{
localToWorld = Matrix4x4.TRS(clusterRenderer.transform.position, clusterRenderer.transform.rotation, Vector3.one);
}
else
{
Quaternion q = clusterRenderer.transform.rotation * (m_PreviewingIndex == -1 ? Quaternion.Euler (rig.CalculateRotationForCaveNode (i)) : Quaternion.identity);
localToWorld = Matrix4x4.TRS (clusterRenderer.transform.position, q, Vector3.one);
}
// transform point to world
for (int p = 0; p < 4; ++p)
{
near[p] = localToWorld.MultiplyPoint (near[p]);
far[p] = localToWorld.MultiplyPoint (far[p]);
}
// Draw the frustum gizmo
for (int p = 0; p < 4; ++p)
{
Handles.DrawLine (near[p], near[(p + 1) % 4]);
Handles.DrawLine (far[p], far[(p + 1) % 4]);
Handles.DrawLine (near[p], far[p]);
}
// Label to show which index of node this screen belongs to
Handles.Label(Vector3.Lerp(far[1], far[3], 0.9f), "" + i);
// Button to activate preview
Vector3 midPoint = Vector3.Lerp (far[0], far[2], 0.5f);
float handleSize = HandleUtility.GetHandleSize(midPoint) * 0.1f;
if (Handles.Button(midPoint, Quaternion.identity, handleSize, handleSize, Handles.DotCap))
{
if (m_PreviewingIndex == i)
{
m_PreviewingIndex = -1;
ResetCamera ();
}
else
{
m_PreviewingIndex = i;
rig.SetupCamera (Camera.main, i);
}
}
}
}