mirror-github-bspeice/fractorium
1
0
Fork 0
mirror of https://bitbucket.org/mfeemster/fractorium.git synced 2025-01-21 13:10:04 -05:00
Code Issues Actions Packages Projects Releases Wiki Activity

Variations02.h edited online with Bitbucket

Browse Source
This commit is contained in:
Matt Feemster 2019-05-24 17:48:31 +00:00
parent 9da35982f0
commit 53e410f452
1 changed files with 21 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
Source/Ember/Variations02.h
View File

@ -4495,6 +4495,8 @@ private:
/// <summary>
/// Poincare2.
/// This is intended to mimic the Poincare variation in Chaotica. But we couldn't use the same name because
/// Poincare already exists above.
/// </summary>
template <typename T>
class Poincare2Variation : public ParametricVariation<T>
@ -4511,10 +4513,10 @@ public:
{
T a = helper.In.x - m_Cx;
T b = helper.In.y - m_Cy;
T c = T(1) - m_Cx * helper.In.x - m_Cy * helper.In.y;
T c = 1 - m_Cx * helper.In.x - m_Cy * helper.In.y;
T d = m_Cy * helper.In.x - m_Cx * helper.In.y;
T num = m_Weight / (c * c + d * d);
T num = m_Weight / Zeps(c * c + d * d);
helper.Out.x = (a * c + b * d) * num;
helper.Out.y = (b * c - a * d) * num;
@ -4538,7 +4540,7 @@ public:
<< "\t\treal_t b = vIn.y - " << cY << ";\n"
<< "\t\treal_t c = 1 - " << cX << " * vIn.x - " << cY << " * vIn.y;\n"
<< "\t\treal_t d = " << cY <<" * vIn.x - " << cX << " * vIn.y;\n"
<< "\t\treal_t num = " << weight <<" / (c * c + d * d);\n"
<< "\t\treal_t num = " << weight <<" / Zeps(c * c + d * d);\n"
<< "\n"
<< "\t\tvOut.x = (a * c + b * d) * num;\n"
<< "\t\tvOut.y = (b * c - a * d) * num;\n"
@ -4547,19 +4549,24 @@ public:
return ss.str();
}
virtual vector<string> OpenCLGlobalFuncNames() const override
{
return vector<string> { "Zeps" };
}
virtual void Precalc() override
{
T a0 = M_2PI / m_PoincareP;
T dist2 = T(1) - (cos(a0) - T(1)) / (cos(a0) + cos(M_2PI / m_PoincareQ));
T dist = (dist2 > T(0)) ? T(1) / sqrt(dist2) : T(1);
T dist2 = 1 - (std::cos(a0) - 1) / (std::cos(a0) + std::cos(M_2PI / m_PoincareQ));
T dist = (dist2 > 0) ? T(1) / std::sqrt(dist2) : T(1);
if (T(1) / m_PoincareP + T(1) / m_PoincareQ < T(0.5))
if (1 / m_PoincareP + 1 / m_PoincareQ < T(0.5))
{
m_Cx = cos(a0) * dist;
m_Cy = sin(a0) * dist;
m_Cx = std::cos(a0) * dist;
m_Cy = std::sin(a0) * dist;
}
else
m_Cx = m_Cy = T(0);
m_Cx = m_Cy = 0;
}
protected:
@ -4567,16 +4574,16 @@ protected:
{
string prefix = Prefix();
m_Params.clear();
m_Params.push_back(ParamWithName<T>(&m_PoincareP, prefix + "poincare_p", 3));
m_Params.push_back(ParamWithName<T>(&m_PoincareQ, prefix + "poincare_q", 7));
m_Params.push_back(ParamWithName<T>(true, &m_Cx, prefix + "poincare_cx")); //Precalc.
m_Params.push_back(ParamWithName<T>(true, &m_Cy, prefix + "poincare_cy"));
m_Params.push_back(ParamWithName<T>(&m_PoincareP, prefix + "poincare2_p", 3));
m_Params.push_back(ParamWithName<T>(&m_PoincareQ, prefix + "poincare2_q", 7));
m_Params.push_back(ParamWithName<T>(true, &m_Cx, prefix + "poincare2_cx"));//Precalc.
m_Params.push_back(ParamWithName<T>(true, &m_Cy, prefix + "poincare2_cy"));
}
private:
T m_PoincareP;
T m_PoincareQ;
T m_Cx; //Precalc.
T m_Cx;//Precalc.
T m_Cy;
};