92 lines
2.9 KiB
C
92 lines
2.9 KiB
C
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// ----------------------------------------------------------------------------
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// - Open3D: www.open3d.org -
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// ----------------------------------------------------------------------------
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// Copyright (c) 2018-2023 www.open3d.org
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// SPDX-License-Identifier: MIT
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// ----------------------------------------------------------------------------
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#pragma once
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#include "open3d/visualization/gui/Widget.h"
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#include "open3d/visualization/rendering/RendererHandle.h"
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namespace open3d {
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namespace t {
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namespace geometry {
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class Image;
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}
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}
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namespace geometry {
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class Image;
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} // namespace geometry
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namespace visualization {
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namespace rendering {
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class Renderer;
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}
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namespace gui {
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class UIImage {
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public:
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explicit UIImage(const char* image_path);
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explicit UIImage(std::shared_ptr<geometry::Image> image);
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explicit UIImage(std::shared_ptr<t::geometry::Image> image);
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/// Uses an existing texture, using texture coordinates
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/// (u0, v0) to (u1, v1). Does not deallocate texture on destruction.
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/// This is useful for using an icon atlas to reduce draw calls.
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explicit UIImage(visualization::rendering::TextureHandle texture_id,
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float u0 = 0.0f,
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float v0 = 0.0f,
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float u1 = 1.0f,
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float v1 = 1.0f);
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~UIImage();
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/// Updates the contents of the texture. If the image is a different
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/// size from the original, a new texture will be created.
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void UpdateImage(std::shared_ptr<geometry::Image> image);
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/// Updates the contents of the texture. If the image is a different
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/// size from the original, a new texture will be created.
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void UpdateImage(std::shared_ptr<t::geometry::Image> image);
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enum class Scaling {
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NONE, /// No scaling, fixed size
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ANY, /// Scales to any size and aspect ratio
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ASPECT /// Scales to any size, but fixed aspect ratio (default)
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};
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void SetScaling(Scaling scaling);
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Scaling GetScaling() const;
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Size CalcPreferredSize(const LayoutContext& context,
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const Widget::Constraints& constraints) const;
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struct DrawParams {
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// Default values are to make GCC happy and contented,
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// pos and size don't have reasonable defaults.
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float pos_x = 0.0f;
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float pos_y = 0.0f;
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float width = 0.0f;
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float height = 0.0f;
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float u0 = 0.0f;
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float v0 = 0.0f;
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float u1 = 1.0f;
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float v1 = 1.0f;
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visualization::rendering::TextureHandle texture;
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bool image_size_changed = false;
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};
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DrawParams CalcDrawParams(visualization::rendering::Renderer& renderer,
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const Rect& frame) const;
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private:
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struct Impl;
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std::unique_ptr<Impl> impl_;
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};
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} // namespace gui
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} // namespace visualization
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} // namespace open3d
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