private void drawWireSphereNow(WireSphere wireSphere,
ref int curPass)
{
var position = wireSphere.pose.position;
var rotation = wireSphere.pose.rotation;
var worldPosition = _currMatrix.MultiplyPoint3x4(position);
var dirToCamera = (Camera.current.transform.position - worldPosition).normalized;
var dirToCameraInMatrix = _currMatrix.inverse.MultiplyVector(dirToCamera);
// Wire sphere outline. This is just a wire sphere that faces the camera.
drawWireArcNow(position, dirToCameraInMatrix, dirToCameraInMatrix.Perpendicular(),
wireSphere.radius, 1.0f,
numCircleSegments: wireSphere.numSegments);
var x = rotation * Vector3.right;
var y = rotation * Vector3.up;
var z = rotation * Vector3.forward;
drawPlaneSoftenedWireArcNow(position, y, x, wireSphere.radius,
inFrontOfPlaneColor: _currColor,
behindPlaneColor: _currColor.WithAlpha(_currColor.a * 0.1f),
planeNormal: dirToCameraInMatrix,
curPass: ref curPass,
fractionOfCircleToDraw: 1.0f,
numCircleSegments: wireSphere.numSegments);
drawPlaneSoftenedWireArcNow(position, z, y, wireSphere.radius,
inFrontOfPlaneColor: _currColor,
behindPlaneColor: _currColor.WithAlpha(_currColor.a * 0.1f),
planeNormal: dirToCameraInMatrix,
curPass: ref curPass,
fractionOfCircleToDraw: 1.0f,
numCircleSegments: wireSphere.numSegments);
drawPlaneSoftenedWireArcNow(position, x, z, wireSphere.radius,
inFrontOfPlaneColor: _currColor,
behindPlaneColor: _currColor.WithAlpha(_currColor.a * 0.1f),
planeNormal: dirToCameraInMatrix,
curPass: ref curPass,
fractionOfCircleToDraw: 1.0f,
numCircleSegments: wireSphere.numSegments);
}
public void DrawAllGizmosToScreen()
{
try {
int matrixIndex = 0;
int colorIndex = 0;
int lineIndex = 0;
int wireSphereIndex = 0;
int meshIndex = 0;
int currPass = -1;
_currMatrix = Matrix4x4.identity;
_currColor = Color.white;
GL.wireframe = false;
for (int i = 0; i < _operations.Count; i++)
{
OperationType type = _operations[i];
switch (type)
{
case OperationType.SetMatrix:
_currMatrix = _matrices[matrixIndex++];
break;
case OperationType.SetColor:
_currColor = _colors[colorIndex++];
currPass = -1; //force pass to be set the next time we need to draw
break;
case OperationType.ToggleWireframe:
GL.wireframe = !GL.wireframe;
break;
case OperationType.DrawLine:
setPass(ref currPass, isUnlit: true);
GL.Begin(GL.LINES);
Line line = _lines[lineIndex++];
GL.Vertex(_currMatrix.MultiplyPoint(line.a));
GL.Vertex(_currMatrix.MultiplyPoint(line.b));
GL.End();
break;
case OperationType.DrawWireSphere:
setPass(ref currPass, isUnlit: true);
GL.Begin(GL.LINES);
WireSphere wireSphere = _wireSpheres[wireSphereIndex++];
drawWireSphereNow(wireSphere, ref currPass);
GL.End();
break;
case OperationType.DrawMesh:
if (GL.wireframe)
{
setPass(ref currPass, isUnlit: true);
}
else
{
setPass(ref currPass, isUnlit: false);
}
Graphics.DrawMeshNow(_meshes[meshIndex++],
_currMatrix * _matrices[matrixIndex++]);
break;
default:
throw new InvalidOperationException("Unexpected operation type " + type);
}
}
} finally {
GL.wireframe = false;
}
}
