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Add ImBezierClosestPoint() function which returns a point on bezier curve which is closed to a specified point.

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This commit is contained in:
Rokas Kupstys
2019-12-17 16:29:12 +02:00
committed by omar
parent 0f7105e156
commit 3831d50ab9
3 changed files with 81 additions and 9 deletions
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3
imgui_internal.h
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@ -340,6 +340,9 @@ static inline float ImLinearSweep(float current, float target, float speed)
static inline ImVec2 ImMul(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x * rhs.x, lhs.y * rhs.y); }
// Helpers: Geometry
IMGUI_API ImVec2 ImBezierCalc(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, float t);
IMGUI_API ImVec2 ImBezierClosestPoint(const ImVec2& p, const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, int num_segments); // For curves with explicit number of segments
IMGUI_API ImVec2 ImBezierClosestPointCasteljau(const ImVec2& p, const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, float tess_tol); // For auto-tesselated curves, tess_tol = style.CurveTessellationTol
IMGUI_API ImVec2 ImLineClosestPoint(const ImVec2& a, const ImVec2& b, const ImVec2& p);
IMGUI_API bool ImTriangleContainsPoint(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& p);
IMGUI_API ImVec2 ImTriangleClosestPoint(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& p);