118 lines
2.1 KiB
C++
118 lines
2.1 KiB
C++
#include "stdneb.h"
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#include "ColorGradient.h"
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namespace Sky
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{
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ColorGradient::ColorGradient()
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: m_bMalFormed(true)
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{
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}
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ColorGradient::~ColorGradient()
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{
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}
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const Math::float3 ColorGradient::GetColor(const Math::scalar &gp) const
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{
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if (m_bMalFormed)
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{
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return Math::float3(0.0, 0.0, 0.0);
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}
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if (m_CFrameVector.Size() == 0)
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{
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return Math::float3(0.0, 0.0, 0.0);
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}
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else if (m_CFrameVector.Size() == 1)
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{
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return m_CFrameVector.Front().Key();
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}
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Util::KeyValuePair<int, Math::scalar> minBound, maxBound;
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// Min value
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minBound.Key() = 0;
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minBound.Value() = -1;
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for (IndexT k = 0; k < m_CFrameVector.Size(); ++k)
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{
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if (m_CFrameVector[k].Value() < gp && m_CFrameVector[k].Value() > minBound.Value())
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{
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minBound.Key() = k;
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minBound.Value() = m_CFrameVector[k].Value();
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}
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}
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// Max value
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maxBound.Key() = 0;
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maxBound.Value() = 2;
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for (IndexT k = 0; k < m_CFrameVector.Size(); ++k)
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{
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if (m_CFrameVector[k].Value() > gp && m_CFrameVector[k].Value() < maxBound.Value())
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{
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maxBound.Key() = k;
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maxBound.Value() = m_CFrameVector[k].Value();
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}
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}
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float range = maxBound.Value() - minBound.Value();
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float rangepoint = (gp - minBound.Value()) / range;
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return m_CFrameVector[minBound.Key()].Key() * (1 - rangepoint) +
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m_CFrameVector[maxBound.Key()].Key() * rangepoint;
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}
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const bool ColorGradient::CheckBounds() const
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{
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Util::KeyValuePair<bool, bool> existbounds;
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existbounds.Key() = false;
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existbounds.Value() = false;
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for (IndexT k = 0; k < m_CFrameVector.Size(); ++k)
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{
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if (m_CFrameVector[k].Value() == 0)
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{
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// More than one min bound
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if (existbounds.Key())
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{
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return false;
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}
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existbounds.Key() = true;
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}
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if (m_CFrameVector[k].Value() < 0 || m_CFrameVector[k].Value() > 1)
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{
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return false;
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}
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}
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for (IndexT k = 0; k < m_CFrameVector.Size(); ++k)
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{
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if (m_CFrameVector[k].Value() == 1)
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{
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// More than one min bound
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if (existbounds.Value())
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{
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return false;
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}
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existbounds.Value() = true;
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}
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}
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if (! existbounds.Key() || ! existbounds.Value())
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{
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return false;
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}
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return true;
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}
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} |