88 lines
2.1 KiB
C++
88 lines
2.1 KiB
C++
// Copyright (c) 2022 Dominic Masters
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//
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// This software is released under the MIT License.
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// https://opensource.org/licenses/MIT
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#include "Camera.hpp"
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#include "scene/Scene.hpp"
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#include "game/DawnGame.hpp"
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using namespace Dawn;
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Camera::Camera(SceneItem &item) :
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SceneItemComponent(item)
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{
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this->getRenderTarget().eventRenderTargetResized.addListener(
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this, &Camera::onRenderTargetResize
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);
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}
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void Camera::updateProjection() {
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switch(this->type) {
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case CAMERA_TYPE_ORTHONOGRAPHIC:
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this->projection = glm::ortho(
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this->orthoLeft,
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this->orthoRight,
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this->orthoBottom,
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this->orthoTop,
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this->clipNear,
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this->clipFar
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);
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break;
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case CAMERA_TYPE_PERSPECTIVE:
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this->projection = glm::perspective(
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this->fov,
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this->getAspect(),
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this->clipNear,
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this->clipFar
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);
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break;
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}
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}
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void Camera::lookAt(glm::vec3 pos, glm::vec3 look) {
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this->lookAt(pos, look, glm::vec3(0, 1, 0));
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}
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void Camera::lookAt(glm::vec3 pos, glm::vec3 look, glm::vec3 up) {
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this->item.transform = glm::lookAt(pos, look, up);
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}
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RenderTarget & Camera::getRenderTarget() {
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if(this->target == nullptr) {
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return this->getGame().renderManager.getBackBuffer();
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}
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return *this->target;
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}
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void Camera::setRenderTarget(std::shared_ptr<RenderTarget> renderTarget) {
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if(renderTarget == this->target) return;
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this->getRenderTarget().eventRenderTargetResized.removeListener(
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this, &Camera::onRenderTargetResize
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);
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this->target = renderTarget;
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this->getRenderTarget().eventRenderTargetResized.addListener(
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this, &Camera::onRenderTargetResize
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);
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this->updateProjection();
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}
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float_t Camera::getAspect() {
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RenderTarget &target = this->getRenderTarget();
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return target.getWidth() / target.getHeight();
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}
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void Camera::start() {
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this->updateProjection();
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}
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void Camera::onRenderTargetResize(RenderTarget &target, float_t w, float_t h) {
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this->updateProjection();
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}
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Camera::~Camera() {
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this->getRenderTarget().eventRenderTargetResized.removeListener(
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this, &Camera::onRenderTargetResize
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);
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} |