Shuenhoy/vtk-m
1
0
Fork 0
mirror of https://gitlab.kitware.com/vtk/vtk-m synced 2024-09-08 13:23:51 +00:00
Code Issues 2 Actions Packages Projects Releases Wiki Activity

ColorTable now converts to and from double less often.

Browse Source 
Previously we would convert to double to perform some operations instead
of always staying in float space.
This commit is contained in:
Robert Maynard 2018-04-25 15:35:27 -04:00
parent e10ee281c7
commit 1ec478ce62
2 changed files with 54 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

101
vtkm/cont/ColorTablePrivate.hxx
View File

@ -126,7 +126,7 @@ struct MinRepresentable<double>
static constexpr vtkm::Int64 value = 4503599627370496L;
};
bool rangeAlmostEqual(const vtkm::Range& r)
inline bool rangeAlmostEqual(const vtkm::Range& r)
{
vtkm::Int64 irange[2];
// needs to be a memcpy to avoid strict aliasing issues, doing a count
@ -141,7 +141,7 @@ bool rangeAlmostEqual(const vtkm::Range& r)
}
template <typename T>
double expandRange(T r[2])
inline double expandRange(T r[2])
{
constexpr bool is_float32_type = std::is_same<T, vtkm::Float32>::value;
using IRange = typename std::conditional<is_float32_type, vtkm::Int32, vtkm::Int64>::type;
@ -179,7 +179,7 @@ double expandRange(T r[2])
return static_cast<double>(r[1]);
}
vtkm::Range adjustRange(const vtkm::Range& r)
inline vtkm::Range adjustRange(const vtkm::Range& r)
{
const bool spans_zero_boundary = r.Min < 0 && r.Max > 0;
if (spans_zero_boundary)
@ -214,12 +214,12 @@ vtkm::Range adjustRange(const vtkm::Range& r)
template <typename T>
vtkm::cont::ArrayHandle<T> buildSampleHandle(std::vector<T>& samples,
vtkm::Int32 numSamples,
T start,
T end,
T inc,
bool appendNanAndRangeColors)
inline vtkm::cont::ArrayHandle<T> buildSampleHandle(std::vector<T>& samples,
vtkm::Int32 numSamples,
T start,
T end,
T inc,
bool appendNanAndRangeColors)
{
int extra_values = (appendNanAndRangeColors) ? 0 : 4;
samples.reserve(static_cast<std::size_t>(numSamples + extra_values));
@ -249,11 +249,11 @@ vtkm::cont::ArrayHandle<T> buildSampleHandle(std::vector<T>& samples,
}
template <typename ColorTable, typename OutputColors>
bool sampleColorTable(const ColorTable* self,
vtkm::Int32 numSamples,
OutputColors& colors,
double tolerance,
bool appendNanAndRangeColors)
inline bool sampleColorTable(const ColorTable* self,
vtkm::Int32 numSamples,
OutputColors& colors,
double tolerance,
bool appendNanAndRangeColors)
{
vtkm::Range r = self->GetRange();
//We want the samples to start at Min, and end at Max so that means
@ -290,56 +290,56 @@ bool sampleColorTable(const ColorTable* self,
}
vtkm::Vec<double, 3> hsvTorgb(const vtkm::Vec<double, 3>& hsv)
inline vtkm::Vec<float, 3> hsvTorgb(const vtkm::Vec<float, 3>& hsv)
{
vtkm::Vec<double, 3> rgb;
constexpr double onethird = 1.0 / 3.0;
constexpr double onesixth = 1.0 / 6.0;
constexpr double twothird = 2.0 / 3.0;
constexpr double fivesixth = 5.0 / 6.0;
vtkm::Vec<float, 3> rgb;
constexpr float onethird = 1.0f / 3.0f;
constexpr float onesixth = 1.0f / 6.0f;
constexpr float twothird = 2.0f / 3.0f;
constexpr float fivesixth = 5.0f / 6.0f;
// compute RGB from HSV
if (hsv[0] > onesixth && hsv[0] <= onethird) // green/red
{
rgb[1] = 1.0;
rgb[0] = (onethird - hsv[0]) * 6;
rgb[2] = 0.0;
rgb[1] = 1.0f;
rgb[0] = (onethird - hsv[0]) * 6.0f;
rgb[2] = 0.0f;
}
else if (hsv[0] > onethird && hsv[0] <= 0.5) // green/blue
else if (hsv[0] > onethird && hsv[0] <= 0.5f) // green/blue
{
rgb[1] = 1.0;
rgb[2] = (hsv[0] - onethird) * 6;
rgb[0] = 0.0;
rgb[1] = 1.0f;
rgb[2] = (hsv[0] - onethird) * 6.0f;
rgb[0] = 0.0f;
}
else if (hsv[0] > 0.5 && hsv[0] <= twothird) // blue/green
{
rgb[2] = 1.0;
rgb[1] = (twothird - hsv[0]) * 6;
rgb[0] = 0.0;
rgb[2] = 1.0f;
rgb[1] = (twothird - hsv[0]) * 6.0f;
rgb[0] = 0.0f;
}
else if (hsv[0] > twothird && hsv[0] <= fivesixth) // blue/red
{
rgb[2] = 1.0;
rgb[0] = (hsv[0] - twothird) * 6;
rgb[1] = 0.0;
rgb[2] = 1.0f;
rgb[0] = (hsv[0] - twothird) * 6.0f;
rgb[1] = 0.0f;
}
else if (hsv[0] > fivesixth && hsv[0] <= 1.0) // red/blue
{
rgb[0] = 1.0;
rgb[2] = (1.0 - hsv[0]) * 6;
rgb[1] = 0.0;
rgb[0] = 1.0f;
rgb[2] = (1.0f - hsv[0]) * 6.0f;
rgb[1] = 0.0f;
}
else // red/green
{
rgb[0] = 1.0;
rgb[0] = 1.0f;
rgb[1] = hsv[0] * 6;
rgb[2] = 0.0;
rgb[2] = 0.0f;
}
// add Saturation to the equation.
rgb[0] = (hsv[1] * rgb[0] + (1.0 - hsv[1]));
rgb[1] = (hsv[1] * rgb[1] + (1.0 - hsv[1]));
rgb[2] = (hsv[1] * rgb[2] + (1.0 - hsv[1]));
rgb[0] = (hsv[1] * rgb[0] + (1.0f - hsv[1]));
rgb[1] = (hsv[1] * rgb[1] + (1.0f - hsv[1]));
rgb[2] = (hsv[1] * rgb[2] + (1.0f - hsv[1]));
rgb[0] *= hsv[2];
rgb[1] *= hsv[2];
@ -348,22 +348,27 @@ vtkm::Vec<double, 3> hsvTorgb(const vtkm::Vec<double, 3>& hsv)
}
// clang-format off
bool outside_vrange(double x) { return x < 0.0 || x > 1.0; }
bool outside_vrange(const vtkm::Vec<double, 2>& x)
inline bool outside_vrange(double x) { return x < 0.0 || x > 1.0; }
inline bool outside_vrange(const vtkm::Vec<double, 2>& x)
{ return x[0] < 0.0 || x[0] > 1.0 || x[1] < 0.0 || x[1] > 1.0; }
bool outside_vrange(const vtkm::Vec<double, 3>& x)
inline bool outside_vrange(const vtkm::Vec<double, 3>& x)
{ return x[0] < 0.0 || x[0] > 1.0 || x[1] < 0.0 || x[1] > 1.0 || x[2] < 0.0 || x[2] > 1.0; }
inline bool outside_vrange(float x) { return x < 0.0f || x > 1.0f; }
inline bool outside_vrange(const vtkm::Vec<float, 2>& x)
{ return x[0] < 0.0f || x[0] > 1.0f || x[1] < 0.0f || x[1] > 1.0f; }
inline bool outside_vrange(const vtkm::Vec<float, 3>& x)
{ return x[0] < 0.0f || x[0] > 1.0f || x[1] < 0.0f || x[1] > 1.0f || x[2] < 0.0f || x[2] > 1.0f; }
bool outside_range() { return false; }
inline bool outside_range() { return false; }
template <typename T>
bool outside_range(T&& t) { return outside_vrange(t); }
inline bool outside_range(T&& t) { return outside_vrange(t); }
template <typename T, typename U>
bool outside_range(T&& t, U&& u) { return outside_vrange(t) || outside_vrange(u); }
inline bool outside_range(T&& t, U&& u) { return outside_vrange(t) || outside_vrange(u); }
template <typename T, typename U, typename V, typename... Args>
bool outside_range(T&& t, U&& u, V&& v, Args&&... args)
inline bool outside_range(T&& t, U&& u, V&& v, Args&&... args)
{
return outside_vrange(t) || outside_vrange(u) || outside_vrange(v) ||
outside_range(std::forward<Args>(args)...);

2
vtkm/exec/ColorTable.hxx
View File

@ -84,7 +84,7 @@ inline vtkm::Vec<float, 3> HSVToRGB(const vtkm::Vec<float, 3>& hsv)
rgb[0] = (onethird - hsv[0]) * 6.0f;
rgb[2] = 0.0f;
}
else if (hsv[0] > onethird && hsv[0] <= 0.5) // green/blue
else if (hsv[0] > onethird && hsv[0] <= 0.5f) // green/blue
{
rgb[1] = 1.0f;
rgb[2] = (hsv[0] - onethird) * 6.0f;