65 lines
2.1 KiB
C
65 lines
2.1 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 <cstdint>
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#include <functional>
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#include <memory>
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namespace open3d {
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namespace visualization {
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namespace rendering {
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class Scene;
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class View;
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class RenderToBuffer {
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public:
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struct Buffer {
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std::size_t width = 0;
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std::size_t height = 0;
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std::size_t n_channels = 0;
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const std::uint8_t* bytes = nullptr;
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std::size_t size = 0;
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};
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using BufferReadyCallback = std::function<void(const Buffer&)>;
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virtual ~RenderToBuffer() = default;
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// Sets a callback that will be called after rendering is finished
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// and after the BufferReadyCallback from Configure() is finished.
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// This callback can be used to deallocate the object. In particular,
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// SetCleanupCallback([](RenderToBuffer *self) { delete self; });
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// is valid.
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void SetCleanupCallback(std::function<void(RenderToBuffer*)> cb) {
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cleanup_callback_ = cb;
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}
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// BufferReadyCallback does not need to free Buffer::bytes.
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// It should also not cache the pointer.
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virtual void Configure(const View* view,
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Scene* scene,
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int width,
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int height,
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int n_channels,
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bool depth_image,
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BufferReadyCallback cb) = 0;
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virtual void SetDimensions(std::uint32_t width, std::uint32_t height) = 0;
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virtual View& GetView() = 0;
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virtual void Render() = 0;
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protected:
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std::function<void(RenderToBuffer*)> cleanup_callback_;
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};
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} // namespace rendering
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} // namespace visualization
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} // namespace open3d
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