basic sky box

[blobs.git] / src / graphics / viewport.cpp

diff --git a/src/graphics/viewport.cpp b/src/graphics/viewport.cpp
index 499a22772025f64c2edbee3277a67f2a2944c522..a3189314f2e58f7bf4ceec2585c61d4b0882e629 100644 (file)
--- a/src/graphics/viewport.cpp
+++ b/src/graphics/viewport.cpp
@@ -1,8 +1,12 @@
 #include "Camera.hpp"
 #include "Viewport.hpp"
 
-#include "const.hpp"
+#include "../creature/Creature.hpp"
+#include "../math/const.hpp"
+#include "../world/Body.hpp"
+#include "../world/Planet.hpp"
 
+#include <cmath>
 #include <GL/glew.h>
 #include <glm/gtx/transform.hpp>
 
@@ -10,45 +14,81 @@
 namespace blobs {
 namespace graphics {
 
-Camera::Camera() noexcept
-: fov(PI_0p25)
+Camera::Camera(const world::Body &r) noexcept
+: fov(PI * 0.25)
 , aspect(1.0f)
 , near(0.1f)
-, far(256.0f)
-, projection(glm::perspective(fov, aspect, near, far))
-, view(1.0f) {
+, far(12560.0f)
+, projection(glm::infinitePerspective(fov, aspect, near))
+, view(1.0f)
+, ref(&r)
+, track_orient(false) {
 
 }
 
 Camera::~Camera() noexcept {
 }
 
-void Camera::FOV(float f) noexcept {
+Camera &Camera::FOV(float f) noexcept {
        fov = f;
        UpdateProjection();
+       return *this;
 }
 
-void Camera::Aspect(float r) noexcept {
+Camera &Camera::Aspect(float r) noexcept {
        aspect = r;
        UpdateProjection();
+       return *this;
 }
 
-void Camera::Aspect(float w, float h) noexcept {
+Camera &Camera::Aspect(float w, float h) noexcept {
        Aspect(w / h);
+       return *this;
 }
 
-void Camera::Clip(float n, float f) noexcept {
+Camera &Camera::Clip(float n, float f) noexcept {
        near = n;
        far = f;
        UpdateProjection();
+       return *this;
 }
 
-void Camera::View(const glm::mat4 &v) noexcept {
-       view = v;
+Camera &Camera::Reference(const world::Body &r) noexcept {
+       ref = &r;
+       return *this;
+}
+
+Camera &Camera::LookAt(const glm::vec3 &pos, const glm::vec3 &tgt, const glm::vec3 &up) noexcept {
+       view = glm::lookAt(pos, tgt, up);
+       return *this;
+}
+
+glm::mat4 Camera::Model(const world::Body &b) const noexcept {
+       if (&b == ref) {
+               return track_orient ? glm::mat4(1.0f) : glm::mat4(ref->LocalTransform());
+       } else if (b.HasParent() && &b.Parent() == ref) {
+               return glm::mat4(track_orient
+                       ? ref->InverseTransform() * b.FromParent() * b.LocalTransform()
+                       : b.FromParent() * b.LocalTransform());
+       } else if (ref->HasParent() && &ref->Parent() == &b) {
+               return glm::mat4(track_orient
+                       ? ref->InverseTransform() * ref->ToParent() * b.LocalTransform()
+                       : ref->ToParent() * b.LocalTransform());
+       } else {
+               return glm::mat4(track_orient
+                       ? ref->InverseTransform() * ref->ToUniverse() * b.FromUniverse() * b.LocalTransform()
+                       : ref->ToUniverse() * b.FromUniverse() * b.LocalTransform());
+       }
+}
+
+glm::mat4 Camera::Universe() const noexcept {
+       return glm::mat4(track_orient
+               ? ref->InverseTransform() * ref->ToUniverse()
+               : ref->ToUniverse());
 }
 
 void Camera::UpdateProjection() noexcept {
-       projection = glm::perspective(fov, aspect, near, far);
+       projection = glm::infinitePerspective(fov, aspect, near);
 }
 
 
@@ -73,5 +113,9 @@ void Viewport::Clear() {
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 }
 
+void Viewport::ClearDepth() {
+       glClear(GL_DEPTH_BUFFER_BIT);
+}
+
 }
 }