mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 21:33:55 +00:00
11996f133f
Virtual methods are being deprecated, so remove their use from the ColorTable classes. Instead of using a virtual method to look up a value in the ColorTable, we essentially use a switch statement. This change also simplified the code quite a bit. The execution object used to use pointers to handle the virtual objects. That is no longer necessary, so a simple `vtkm::exec::ColorTable` is returned for execution objects. (Note that this `ColorTable` contains pointers that are specific for the particular device.) This is a non- backward compabible change. However, the only place (outside of the `ColorTable` implementation itself) was a single worklet for converting scalars to colors (`vtkm::worklet::colorconversion::TransferFunction`). This is unlikely to affect anyone. I also "fixed" some names in enum structs. There has been some inconsistencies in VTK-m on whether items in an enum struct are capitolized or camel case. We seem to moving toward camel case, so deprecate some old names.
111 lines
3.4 KiB
C++
111 lines
3.4 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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//
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//============================================================================
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#include <vtkm/rendering/ColorBarAnnotation.h>
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#include <vtkm/rendering/TextAnnotationScreen.h>
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namespace vtkm
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{
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namespace rendering
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{
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ColorBarAnnotation::ColorBarAnnotation()
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: ColorTable(vtkm::ColorSpace::Lab)
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, Position(vtkm::Range(-0.88, +0.88), vtkm::Range(+0.87, +0.92), vtkm::Range(0, 0))
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, Horizontal(true)
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, FieldName("")
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{
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}
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ColorBarAnnotation::~ColorBarAnnotation() {}
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void ColorBarAnnotation::SetFieldName(const std::string& fieldName)
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{
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FieldName = fieldName;
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}
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void ColorBarAnnotation::SetPosition(const vtkm::Bounds& position)
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{
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Position = position;
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vtkm::Float64 x = Position.X.Length();
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vtkm::Float64 y = Position.Y.Length();
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if (x > y)
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Horizontal = true;
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else
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Horizontal = false;
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}
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void ColorBarAnnotation::SetRange(const vtkm::Range& range, vtkm::IdComponent numTicks)
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{
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std::vector<vtkm::Float64> positions, proportions;
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this->Axis.SetMinorTicks(positions, proportions); // clear any minor ticks
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for (vtkm::IdComponent i = 0; i < numTicks; ++i)
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{
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vtkm::Float64 prop = static_cast<vtkm::Float64>(i) / static_cast<vtkm::Float64>(numTicks - 1);
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vtkm::Float64 pos = range.Min + prop * range.Length();
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positions.push_back(pos);
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proportions.push_back(prop);
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}
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this->Axis.SetMajorTicks(positions, proportions);
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}
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void ColorBarAnnotation::Render(const vtkm::rendering::Camera& camera,
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const vtkm::rendering::WorldAnnotator& worldAnnotator,
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vtkm::rendering::Canvas& canvas)
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{
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canvas.AddColorBar(Position, this->ColorTable, Horizontal);
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this->Axis.SetColor(canvas.GetForegroundColor());
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this->Axis.SetLineWidth(1);
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if (Horizontal)
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{
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this->Axis.SetScreenPosition(Position.X.Min, Position.Y.Min, Position.X.Max, Position.Y.Min);
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this->Axis.SetLabelAlignment(TextAnnotation::HCenter, TextAnnotation::Top);
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this->Axis.SetMajorTickSize(0, .02, 1.0);
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}
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else
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{
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this->Axis.SetScreenPosition(Position.X.Min, Position.Y.Min, Position.X.Min, Position.Y.Max);
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this->Axis.SetLabelAlignment(TextAnnotation::Right, TextAnnotation::VCenter);
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this->Axis.SetMajorTickSize(.02, 0.0, 1.0);
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}
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this->Axis.SetMinorTickSize(0, 0, 0); // no minor ticks
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this->Axis.Render(camera, worldAnnotator, canvas);
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if (FieldName != "")
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{
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vtkm::Vec2f_32 labelPos;
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if (Horizontal)
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{
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labelPos[0] = vtkm::Float32(Position.X.Min);
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labelPos[1] = vtkm::Float32(Position.Y.Max);
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}
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else
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{
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labelPos[0] = vtkm::Float32(Position.X.Min - 0.07);
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labelPos[1] = vtkm::Float32(Position.Y.Max + 0.03);
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}
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vtkm::rendering::TextAnnotationScreen var(FieldName,
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canvas.GetForegroundColor(),
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.045f, // font scale
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labelPos,
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0.f); // rotation
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var.Render(camera, worldAnnotator, canvas);
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}
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}
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}
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} // namespace vtkm::rendering
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