Cool_Tools/imgui
1
0
Fork 0
mirror of https://github.com/ocornut/imgui.git synced 2024-11-23 23:31:08 +01:00
Code Releases Wiki Activity

bug fix: float precision overflow in IM_NORMALIZE2F_OVER_ZERO

Browse Source 
when added vertices are particularly dense or close together, sometimes the resulting lines will crack, flicker, or even cover the entire screen, causing the screen to flicker
Since a root-splitting calculation will be performed later, 0.001 is appropriate

affected functions: AddPolyline, AddConvexPolyFilled
This commit is contained in:
injoins 2023-04-14 22:10:40 +08:00
parent 1ebb913827
commit 4c9f4aaf8c
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
imgui_draw.cpp
View File

@ -699,7 +699,7 @@ void ImDrawList::PrimQuadUV(const ImVec2& a, const ImVec2& b, const ImVec2& c, c
// On AddPolyline() and AddConvexPolyFilled() we intentionally avoid using ImVec2 and superfluous function calls to optimize debug/non-inlined builds.
// - Those macros expects l-values and need to be used as their own statement.
// - Those macros are intentionally not surrounded by the 'do {} while (0)' idiom because even that translates to runtime with debug compilers.
#define IM_NORMALIZE2F_OVER_ZERO(VX,VY) { float d2 = VX*VX + VY*VY; if (d2 > 0.0f) { float inv_len = ImRsqrt(d2); VX *= inv_len; VY *= inv_len; } } (void)0
#define IM_NORMALIZE2F_OVER_ZERO(VX,VY) { float d2 = VX*VX + VY*VY; if (d2 > 0.001f) { float inv_len = ImRsqrt(d2); VX *= inv_len; VY *= inv_len; } } (void)0
#define IM_FIXNORMAL2F_MAX_INVLEN2 100.0f // 500.0f (see #4053, #3366)
#define IM_FIXNORMAL2F(VX,VY) { float d2 = VX*VX + VY*VY; if (d2 > 0.000001f) { float inv_len2 = 1.0f / d2; if (inv_len2 > IM_FIXNORMAL2F_MAX_INVLEN2) inv_len2 = IM_FIXNORMAL2F_MAX_INVLEN2; VX *= inv_len2; VY *= inv_len2; } } (void)0