Method UpdateHotEnvelopePoint

src/game/editor/editor.cpp:4534–4587

};

void CEditor::UpdateHotEnvelopePoint(const CUIRect &View, const CEnvelope *pEnvelope, int ActiveChannels)
{
	if(!Ui()->MouseInside(&View))
		return;

	const vec2 MousePos = Ui()->MousePos();

	float MinDist = 200.0f;
	const void *pMinPointId = nullptr;

	const auto UpdateMinimum = [&](vec2 Position, const void *pId) {
		const float CurrDist = length_squared(Position - MousePos);
		if(CurrDist < MinDist)
		{
			MinDist = CurrDist;
			pMinPointId = pId;
		}
	};

	for(size_t i = 0; i < pEnvelope->m_vPoints.size(); i++)
	{
		for(int c = pEnvelope->GetChannels() - 1; c >= 0; c--)
		{
			if(!(ActiveChannels & (1 << c)))
				continue;

			if(i > 0 && pEnvelope->m_vPoints[i - 1].m_Curvetype == CURVETYPE_BEZIER)
			{
				vec2 Position;
				Position.x = EnvelopeToScreenX(View, (pEnvelope->m_vPoints[i].m_Time + pEnvelope->m_vPoints[i].m_Bezier.m_aInTangentDeltaX[c]).AsSeconds());
				Position.y = EnvelopeToScreenY(View, fx2f(pEnvelope->m_vPoints[i].m_aValues[c] + pEnvelope->m_vPoints[i].m_Bezier.m_aInTangentDeltaY[c]));
				UpdateMinimum(Position, &pEnvelope->m_vPoints[i].m_Bezier.m_aInTangentDeltaX[c]);
			}

			if(i < pEnvelope->m_vPoints.size() - 1 && pEnvelope->m_vPoints[i].m_Curvetype == CURVETYPE_BEZIER)
			{
				vec2 Position;
				Position.x = EnvelopeToScreenX(View, (pEnvelope->m_vPoints[i].m_Time + pEnvelope->m_vPoints[i].m_Bezier.m_aOutTangentDeltaX[c]).AsSeconds());
				Position.y = EnvelopeToScreenY(View, fx2f(pEnvelope->m_vPoints[i].m_aValues[c] + pEnvelope->m_vPoints[i].m_Bezier.m_aOutTangentDeltaY[c]));
				UpdateMinimum(Position, &pEnvelope->m_vPoints[i].m_Bezier.m_aOutTangentDeltaX[c]);
			}

			vec2 Position;
			Position.x = EnvelopeToScreenX(View, pEnvelope->m_vPoints[i].m_Time.AsSeconds());
			Position.y = EnvelopeToScreenY(View, fx2f(pEnvelope->m_vPoints[i].m_aValues[c]));
			UpdateMinimum(Position, &pEnvelope->m_vPoints[i].m_aValues[c]);
		}
	}

	if(pMinPointId != nullptr)
	{
		Ui()->SetHotItem(pMinPointId);
	}
}

void CEditor::RenderEnvelopeEditor(CUIRect View)
{