diff --git a/include/Engine/Rendering/Camera.h b/include/Engine/Rendering/Camera.h index 2b863448..29dd4626 100644 --- a/include/Engine/Rendering/Camera.h +++ b/include/Engine/Rendering/Camera.h @@ -2,6 +2,7 @@ #define Camera_h__ #include "../GLM.h" +#include "../Core/Util/Rectangle.h" class Camera { @@ -32,7 +33,6 @@ public: glm::mat4 ViewMatrix() const { return m_ViewMatrix; } void SetViewMatrix(glm::mat4 val); - float AspectRatio() const { return m_AspectRatio; } void SetAspectRatio(float val); @@ -48,6 +48,8 @@ public: void UpdateViewMatrix(); void UpdateProjectionMatrix(); + glm::vec2 WorldToScreen(glm::vec3 worldCoord, Rectangle resolution); + private: glm::vec3 m_Position; diff --git a/src/Engine/Rendering/Camera.cpp b/src/Engine/Rendering/Camera.cpp index 5a774c34..f6b2e5ef 100644 --- a/src/Engine/Rendering/Camera.cpp +++ b/src/Engine/Rendering/Camera.cpp @@ -79,6 +79,19 @@ void Camera::UpdateProjectionMatrix() m_ProjectionMatrix = glm::perspective(m_FOV, m_AspectRatio, m_NearClip, m_FarClip); } +glm::vec2 Camera::WorldToScreen(glm::vec3 worldCoord, Rectangle resolution) +{ + glm::vec4 screenCoord = m_ProjectionMatrix * m_ViewMatrix * glm::vec4(worldCoord, 1.f); + if (screenCoord.w != 0) { + screenCoord.x /= screenCoord.w; + screenCoord.y /= screenCoord.w; + screenCoord.z /= screenCoord.w; + } + screenCoord.x = screenCoord.x * (resolution.Width / 2.f); + screenCoord.y = screenCoord.y * (resolution.Height / 2.f); + return glm::vec2(screenCoord); +} + void Camera::UpdateViewMatrix() { m_ViewMatrix = glm::toMat4(glm::inverse(m_Orientation))