cameracomponent.h

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
#pragma once
 
// External Includes
#include <glm/glm.hpp>
#include <component.h>
#include <utility/dllexport.h>
#include <renderwindow.h>
#include <rect.h>
 
namespace nap
{
    // Forward declares
    class CameraComponentInstance;
 
 
    class NAPAPI CameraComponent : public Component
    {
        RTTI_ENABLE(Component)
        DECLARE_COMPONENT(CameraComponent, CameraComponentInstance)
    public:
        virtual void getDependentComponents(std::vector<rtti::TypeInfo>& components) const override;
    };
 
 
    class NAPAPI CameraComponentInstance : public ComponentInstance
    {
        RTTI_ENABLE(ComponentInstance)
    public:
        // Default constructor
        CameraComponentInstance(EntityInstance& entity, Component& resource);
 
        virtual const glm::mat4& getProjectionMatrix() const = 0;
 
        virtual const glm::mat4 getViewMatrix() const = 0;
 
        virtual void setRenderTargetSize(const glm::ivec2& size)                                                { mRenderTargetSize = size; }
 
        glm::vec3 screenToWorld(const glm::vec3& screenPos, const math::Rect& viewport);
 
        glm::vec3 worldToScreen(const glm::vec3& worldPos, const math::Rect& viewport);
 
        glm::vec3 rayFromScreen(const glm::vec2& screenPos, const math::Rect& viewport);
 
        const glm::ivec2& getRenderTargetSize() const                   { return mRenderTargetSize; }
 
        virtual float getNearClippingPlane() const = 0;
 
        virtual float getFarClippingPlane() const = 0;
 
        virtual const glm::mat4& getRenderProjectionMatrix() const = 0;
 
    private:
        glm::ivec2  mRenderTargetSize = { 1, 1 };                       // The size of the render target we're rendering to
    };
}