mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-07-11 09:33:37 +00:00
75 lines
2.0 KiB
C++
75 lines
2.0 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/ColorLegendAnnotation.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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ColorLegendAnnotation::ColorLegendAnnotation()
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{
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this->FontScale = 0.05f;
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this->LabelColor = vtkm::rendering::Color::white;
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}
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void ColorLegendAnnotation::Clear()
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{
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this->Labels.clear();
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this->ColorSwatchList.clear();
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}
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void ColorLegendAnnotation::AddItem(const std::string& label, vtkm::rendering::Color color)
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{
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this->Labels.push_back(label);
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this->ColorSwatchList.push_back(color);
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}
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void ColorLegendAnnotation::Render(const vtkm::rendering::Camera& camera,
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const vtkm::rendering::WorldAnnotator& annotator,
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vtkm::rendering::Canvas& canvas)
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{
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vtkm::Float32 l = -0.95f, r = -0.90f;
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vtkm::Float32 b = +0.90f, t = +0.95f;
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for (auto& color : this->ColorSwatchList)
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{
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canvas.AddColorSwatch(l, b, l, t, r, t, r, b, color);
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b -= 0.07f;
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t -= 0.07f;
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}
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// reset positions
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l = -0.95f;
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r = -0.90f;
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b = +0.90f;
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t = +0.95f;
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while (this->Annot.size() < this->Labels.size())
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{
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this->Annot.push_back(std::make_unique<TextAnnotationScreen>(
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"test", this->LabelColor, this->FontScale, vtkm::Vec2f_32(0, 0)));
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}
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for (unsigned int i = 0; i < this->Annot.size(); ++i)
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{
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TextAnnotationScreen* txt = Annot[i].get();
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txt->SetText(Labels[i]);
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txt->SetPosition(r + .02f, (b + t) / 2.f);
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txt->SetAlignment(TextAnnotationScreen::Left, TextAnnotationScreen::VCenter);
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txt->Render(camera, annotator, canvas);
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b -= 0.07f;
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t -= 0.07f;
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}
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}
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}
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} // namespace vtkm::rendering
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