118 lines
3.2 KiB
C++
118 lines
3.2 KiB
C++
/* This file is part of the Pangolin Project.
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* http://github.com/stevenlovegrove/Pangolin
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*
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* Copyright (c) 2011 Steven Lovegrove
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#include <memory>
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#include <map>
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#include <random>
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#include <pangolin/display/opengl_render_state.h>
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#include <pangolin/scene/interactive.h>
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namespace pangolin {
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class Renderable
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{
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public:
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using guid_t = GLuint;
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static guid_t UniqueGuid()
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{
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static std::random_device rd;
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static std::mt19937 gen(rd());
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return (guid_t)gen();
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}
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Renderable(const std::weak_ptr<Renderable>& parent = std::weak_ptr<Renderable>())
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: guid(UniqueGuid()), parent(parent), T_pc(IdentityMatrix()), should_show(true)
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{
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}
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virtual ~Renderable()
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{
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}
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// Default implementation simply renders children.
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virtual void Render(const RenderParams& params = RenderParams()) {
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RenderChildren(params);
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}
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void RenderChildren(const RenderParams& params)
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{
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for(auto& p : children) {
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Renderable& r = *p.second;
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if(r.should_show) {
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glPushMatrix();
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r.T_pc.Multiply();
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r.Render(params);
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if(r.manipulator) {
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r.manipulator->Render(params);
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}
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glPopMatrix();
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}
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}
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}
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std::shared_ptr<Renderable> FindChild(guid_t guid)
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{
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auto o = children.find(guid);
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if(o != children.end()) {
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return o->second;
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}
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for(auto& kv : children ) {
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std::shared_ptr<Renderable> c = kv.second->FindChild(guid);
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if(c) return c;
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}
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return std::shared_ptr<Renderable>();
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}
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Renderable& Add(const std::shared_ptr<Renderable>& child)
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{
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if(child) {
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children[child->guid] = child;
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};
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return *this;
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}
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// Renderable properties
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const guid_t guid;
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std::weak_ptr<Renderable> parent;
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pangolin::OpenGlMatrix T_pc;
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bool should_show;
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// Children
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std::map<guid_t, std::shared_ptr<Renderable>> children;
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// Manipulator (handler, thing)
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std::shared_ptr<Manipulator> manipulator;
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};
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}
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