Merge branch 'master' of https://github.com/podgorskiy/imgui into podgorskiy-master

ago%!(EXTRA string=7 years) · 8040cf1425
parent 7e24ce0956 94466745bb
commit 8040cf1425
1 changed files with 3 additions and 4 deletions
--- a/imgui.cpp
+++ b/imgui.cpp
@ -951,14 +951,13 @@ ImVec2 ImLineClosestPoint(const ImVec2& a, const ImVec2& b, const ImVec2& p)
 {
    ImVec2 ap = p - a;
    ImVec2 ab_dir = b - a;
-    float ab_len = sqrtf(ab_dir.x * ab_dir.x + ab_dir.y * ab_dir.y);
-    ab_dir *= 1.0f / ab_len;
    float dot = ap.x * ab_dir.x + ap.y * ab_dir.y;
    if (dot < 0.0f)
        return a;
-    if (dot > ab_len)
+    float ab_len_sqr = ab_dir.x * ab_dir.x + ab_dir.y * ab_dir.y;
+    if (dot > ab_len_sqr)
        return b;
-    return a + ab_dir * dot;
+    return a + ab_dir * dot / ab_len_sqr;
 }

 bool ImTriangleContainsPoint(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& p)