20 Determining Point Relative Ratios
Q3Point2D_RRatio
function to find a point lying between two given two-dimensional points that is at a desired distance ratio from one of those points.
TQ3Point2D *Q3Point2D_RRatio ( const TQ3Point2D *p1, const TQ3Point2D *p2, float r1, float r2, TQ3Point2D *result);p1
A two-dimensional point.p2
A two-dimensional point.r1
A floating-point number.r2
A floating-point number.result
On exit, the two-dimensional point that is at a desired distance ratio fromp1
along the line segment betweenp1
andp2
.
Q3Point2D_RRatio
function returns, as its function result and in the result
parameter, the two-dimensional point that lies on the line segment 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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