camera.h

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#pragma once
 
#include "widget.h"
 
namespace gridui {
 
class Camera : public Widget {
    template <typename Self, typename Finished>
    friend class builder::BuilderMixin;
 
    using Widget::Widget;
 
public:
    struct Tag {
        float corners[4][2];
        uint8_t id;
    };
 
    void setRotation(float rotation) {
        m_state->set("rotation", new rbjson::Number(rotation));
    }
 
    float rotation() const {
        return data().getDouble("rotation");
    }
 
    void setClip(bool clip) {
        m_state->set("clip", new rbjson::Bool(clip));
    }
 
    bool clip() const {
        return data().getBool("clip");
    }
 
    void addTag(const Tag& t) {
        auto* tagsArray = data().getArray("tags");
        const bool existedBefore = tagsArray != NULL;
        if (!existedBefore) {
            tagsArray = new rbjson::Array;
        }
        tagsArray->push_back(buildTagObject(t));
 
        if (!existedBefore) {
            m_state->set("tags", tagsArray);
        }
        {
            m_state->markChanged("tags");
        }
    }
 
    void setTags(const std::vector<Tag>& tags) {
        auto* tagsArray = new rbjson::Array;
        for (const auto& t : tags) {
            tagsArray->push_back(buildTagObject(t));
        }
 
        m_state->set("tags", tagsArray);
    }
 
    void clearTags() {
        auto* tagsArray = new rbjson::Array;
        m_state->set("tags", tagsArray);
    }
 
private:
    rbjson::Object* buildTagObject(const Tag& t) {
        auto* tag = new rbjson::Object;
        tag->set("id", t.id);
        tag->set("c00", t.corners[0][0]);
        tag->set("c01", t.corners[0][1]);
        tag->set("c10", t.corners[1][0]);
        tag->set("c11", t.corners[1][1]);
        tag->set("c20", t.corners[2][0]);
        tag->set("c21", t.corners[2][1]);
        tag->set("c30", t.corners[3][0]);
        tag->set("c31", t.corners[3][1]);
        return tag;
    }
};
 
};