LineTriangleIntersection
From Solid Graphics Wiki
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The LineTriangleIntersection function calculates a line's intersection with a triangle.
int LineTriangleIntersection
(
const float lStart[ 3 ],
const float lEnd[ 3 ],
const float t0[ 3 ],
const float t1[ 3 ],
const float t2[ 3 ],
float s[ 2 ]
);
int LineTriangleIntersection
(
const double lStart[ 3 ],
const double lEnd[ 3 ],
const double t0[ 3 ],
const double t1[ 3 ],
const double t2[ 3 ],
double s[ 2 ]
);
Parameters
| lStart | x,y,z coordinates of line's first definition point. |
| lEnd | x,y,z coordinates of line's second definition point. |
| t0 | x,y,z coordinates of the first point defining the triangle. |
| t1 | x,y,z coordinates of the second point defining the triangle. |
| t2 | x,y,z coordinates of the third point defining the triangle. |
| s | if line intersects the triangle the variable pointed by s will contain position of the intersection point on the line. If return value is 2 the variable will contain position of two edge points where the line intersects the triangle. The point position(s) can be then translated to it's (their) coordinates using the LinePositionToPoint function. |
Return Value
The function returns 0 if the line and the triangle do not intersect, 1 if the line intersects the triangle in one point, 2 if the line lies in the triangle's plane and intersects it in more than one triangle's edge.
See Also
