20 Determining Point Relative Ratios
Q3RationalPoint4D_RRatio
function to find a point lying between two given four-dimensional points that is at a desired distance ratio from one of those points.
TQ3RationalPoint4D *Q3RationalPoint4D_RRatio ( const TQ3RationalPoint4D *p1, const TQ3RationalPoint4D *p2, float r1, float r2, TQ3RationalPoint4D *result);p1
A rational four-dimensional point.p2
A rational four-dimensional point.r1
A floating-point number.r2
A floating-point number.result
On exit, the four-dimensional point that is at a desired distance ratio fromp1
along the line segment betweenp1
andp2
.
Q3RationalPoint4D_RRatio
function returns, as its function result and in the result
parameter, the four-dimensional point that lies on the line segment lying between the points p1
and p2
and that is at a distance from the first point determined by the ratio r1
/(r1
+ r2
).
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