![[Grasshopper] How to use Curve | Plane to obtain information on curve and plane intersection points](https://iarchway.com/wp-content/uploads/2026/01/eyecatch-29.png)
This article explains how to use Curve | Plane to obtain information on curve and plane intersection points.
On the Grasshopper, it is represented by either of the two above.
Obtain information about the intersection point between a curve and a plane
Using Curve | Plane allows you to obtain information about intersection points between a curve and a plane.
For this example, we will use the curve on Rhino in the image above.
Components used: ①Curve ②YZ Plane ③Curve | Plane
This time, we are setting the curve on Rhino in Curve.
Additionally, the plane uses the YZ Plane, which is formed from the Y-direction and Z-direction.
Connect the Curve from the line information to Curve | Plane(C).
Connect the YZ Plane information of the plane to Curve | Plane(P).
Then, as shown in the two images above, intersection points were created where the curve and the plane intersect.
In this way, using Curve | Plane allows you to obtain the intersection point between a curve and a plane.
Output data
Let’s take a look at the output data.
Additional Component: ①Point
From the Curve | Plane(P) on the right, the point where the curve intersects the plane is output.
Additional Component: ①Shatter
From the Curve | Plane(t) on the right, information about the position of the intersection points on the curve is output.
For example, let’s try using Shatter to split the curve.
Connect Curve to Shatter(C).
Furthermore, connect Curve | Plane(t) to Shatter(t).
After that, we tried exporting onto Rhino.
Then, as shown in the image above, you can see that the curve is split at the intersection point.
In this way, Curve | Plane(t) outputs information about the position of the intersection point on the curve.
From the Curve | Plane(uv) on the right, point data for the flattened state is output.
In this case, point data is created on the plane formed from the Y and Z directions.
The image above shows the points output from Curve | Plane(P).
In this case, since it is created on the YZ Plane’s Y-direction and Z-direction plane, there is a point 5 squares in the X-direction relative to this plane (actually 5 squares along the Y-direction).
The image above shows the points output from Curve | Plane(uv).
In this case, point data is created on the plane generated from the default X and Y directions.
This indicates that in this case, the point is located five squares along the default X-axis direction.
List of Grasshopper articles using Curve | Plane component↓
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