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#rnx #rb none #ROBOMERGE-OWNER: ryan.durand #ROBOMERGE-AUTHOR: ryan.durand #ROBOMERGE-SOURCE: CL 10869210 via CL 10869511 via CL 10869900 #ROBOMERGE-BOT: (v613-10869866) [CL 10870549 by ryan durand in Main branch]
45 lines
1.2 KiB
C++
45 lines
1.2 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "Slate/SlateVectorArtInstanceData.h"
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void FSlateVectorArtInstanceData::SetPositionFixedPoint16(FVector2D Position)
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{
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// We are effectively doing fixed point positioning
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// With 13 bits for the whole part and 3 bits of decimal precision.
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// xxxxxxxxxxxxx.xxx
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// [0..8191].[0..7]
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{
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uint32 CurrentDataX = static_cast<uint32>(GetData().X) & 0xFFFF0000;
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GetData().X = CurrentDataX | FMath::RoundToInt(Position.X*8.0f) << 0;
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}
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{
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uint32 CurrentDataY = static_cast<uint32>(GetData().Y) & 0xFFFF0000;
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GetData().Y = CurrentDataY | FMath::RoundToInt(Position.Y*8.0f) << 0;
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}
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}
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void FSlateVectorArtInstanceData::SetScaleFixedPoint16(float Scale)
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{
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// We need some fractional precision, so use 8 bits whole and 8 bits fractional.
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// [0..256].[0..256]
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uint32 CurrentDataZ = static_cast<uint32>(GetData().Z) & 0xFFFF0000;
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GetData().Z = CurrentDataZ | FMath::RoundToInt(Scale*256.0f) << 0;
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}
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void FSlateVectorArtInstanceData::SetPosition(FVector2D Position)
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{
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GetData().X = Position.X;
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GetData().Y = Position.Y;
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}
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void FSlateVectorArtInstanceData::SetScale(float Scale)
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{
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GetData().Z = Scale;
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}
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void FSlateVectorArtInstanceData::SetBaseAddress(float Address)
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{
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GetData().W = Address;
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}
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