src/vertexmap.h

Wed, 25 May 2022 20:36:34 +0300

author
Teemu Piippo <teemu@hecknology.net>
date
Wed, 25 May 2022 20:36:34 +0300
changeset 199
6988973515d2
parent 120
8c9fff699241
child 200
ca23936b455b
permissions
-rw-r--r--

Fix pick() picking from weird places on the screen with high DPI scaling

glReadPixels reads data from the frame buffer, which contains data after
high DPI scaling, so any reads to that need to take this scaling into account

#ifndef VERTEXMAP_H
#define VERTEXMAP_H
#include <set>
#include "main.h"
#include "model.h"

/**
 * @brief Collects a map of all vertices in a model to all objects that use the specified vertex.
 */
class VertexMap : public QObject
{
	Q_OBJECT
public:
	struct VertexInfo
	{
		glm::vec3 point;
		std::set<ldraw::id_t> objects;
		bool transformSet = false;
		glm::mat4 transform;
	};
	using ApplyFunction = std::function<void(const glm::vec3&, const VertexInfo&)>;
	VertexMap(const Model *model);
	Q_SLOT void build();
	void apply(ApplyFunction fn) const;
Q_SIGNALS:
	Q_SIGNAL void verticesChanged();
private:
	const Model* const model;
	QSet<unsigned int> vertexHashes;
	std::vector<glm::vec3> vertices;
	std::map<unsigned int, VertexInfo> map;
};

#endif // VERTEXMAP_H

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