So i know the equation of a plane.(adsbygoogle = window.adsbygoogle || []).push({});

Ax + By +Cz = D

Normal is the normal vector to the plane.

A = normal.x

B = normal.y

C = normal.z

p1 and p2 are 2 points on the line (which will intercept a plane at some point)

the .x and .y and .z refer to there respective components of the vector.

X = (p2.x - p1.x)* T + p1.x

Y = (p2.y - p1.y)* T + p1.y

Z = (p2.z - p1.z)* T + p1.z

I also know what D equals I solved for that by moving stuff around

The problem is a need a general solution for T.

It should be something like

A ((p2.x - p1.x) * T + p1.x)) + B ((p2.y - p1.y) * T + p1.y)) + C ((p2.z - p1.z) * T + p1.z)) = D

Except isolated for T (I believe)

In case your curious this is for a programming function. Thats why i'm using nothing but variables.

I can solve for every equation but T, while I can solve for T by myself given specific numbers im not sure how to isolate it even if I expand out the equation to stuff like

Ap2.x - Ap1.x * AT + Ap1.x ...

I'm thinking maybe im going down the wrong path here or something.

Any help would be much appreciated. :)

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Point at which a line intersects a plane

Loading...

Similar Threads - Point line intersects | Date |
---|---|

I Prove that only one straight line passes through two point | Sep 19, 2017 |

How to find a point on line of intersection of 2 planes? | Apr 14, 2015 |

Finding the intersection points of the two lines in space | Feb 26, 2012 |

Find the equivalent intersection point of multi lines in 3D space | Nov 23, 2007 |

Two lines intersect at three points? | May 20, 2004 |

**Physics Forums - The Fusion of Science and Community**