spherical sun

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

diff --git a/src/graphics/viewport.cpp b/src/graphics/viewport.cpp
index 2d9b469236a07d8f2ce84da43d014530836c09e7..c3727738861648a914b97021f36305b6698a7bdd 100644 (file)
--- a/src/graphics/viewport.cpp
+++ b/src/graphics/viewport.cpp
@@ -1,11 +1,15 @@
 #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/euler_angles.hpp>
+#include <glm/gtx/rotate_vector.hpp>
 #include <glm/gtx/transform.hpp>
 
 
@@ -13,11 +17,11 @@ namespace blobs {
 namespace graphics {
 
 Camera::Camera(const world::Body &r) noexcept
-: fov(PI_0p25)
+: fov(PI * 0.25)
 , aspect(1.0f)
 , near(0.1f)
 , far(12560.0f)
-, projection(glm::perspective(fov, aspect, near, far))
+, projection(glm::infinitePerspective(fov, aspect, near))
 , view(1.0f)
 , ref(&r)
 , track_orient(false) {
@@ -56,77 +60,56 @@ Camera &Camera::Reference(const world::Body &r) noexcept {
        return *this;
 }
 
-Camera &Camera::FirstPerson(int srf, const glm::vec3 &pos, const glm::vec3 &at) noexcept {
-       track_orient = true;
-
-       float dir = srf < 3 ? 1.0f : -1.0f;
-
-       glm::vec3 position;
-       position[(srf + 0) % 3] = pos.x;
-       position[(srf + 1) % 3] = pos.y;
-       position[(srf + 2) % 3] = dir * (pos.z + Reference().Radius());
-
-       glm::vec3 up(0.0f);
-       up[(srf + 2) % 3] = dir;
-
-       glm::vec3 target;
-       target[(srf + 0) % 3] = at.x;
-       target[(srf + 1) % 3] = at.y;
-       target[(srf + 2) % 3] = dir * (at.z + Reference().Radius());
-
-       view = glm::lookAt(position, target, up);
-
-       return *this;
-}
-
-Camera &Camera::MapView(int srf, const glm::vec3 &pos, float roll) noexcept {
-       track_orient = true;
-
-       float dir = srf < 3 ? 1.0f : -1.0f;
-
-       glm::vec3 position;
-       position[(srf + 0) % 3] = pos.x;
-       position[(srf + 1) % 3] = pos.y;
-       position[(srf + 2) % 3] = dir * (pos.z + Reference().Radius());
-
-       glm::vec3 up(0.0f);
-       up[(srf + 0) % 3] = std::cos(roll);
-       up[(srf + 1) % 3] = std::sin(roll);
-       up[(srf + 2) % 3] = 0.0f;
-
-       glm::vec3 target = position;
-       target[(srf + 2) % 3] -= dir;
-
-       view = glm::lookAt(position, target, up);
-
-       return *this;
-}
-
 Camera &Camera::Orbital(const glm::vec3 &pos) noexcept {
        track_orient = false;
        view = glm::lookAt(pos, glm::vec3(0.0f), glm::vec3(0.0f, 1.0f, 0.0f));
        return *this;
 }
 
+Camera &Camera::Radial(const creature::Creature &c, double distance, const glm::dvec3 &angle) {
+       const creature::Situation &s = c.GetSituation();
+       glm::dvec3 pos(s.Position());
+       glm::dvec3 up(0.0);
+       glm::dvec3 dir(0.0, 0.0, -distance);
+       if (s.OnSurface()) {
+               Reference(s.GetPlanet());
+               track_orient = true;
+               up = s.GetPlanet().NormalAt(s.Position());
+               glm::dvec3 ref(glm::normalize(glm::cross(up, glm::dvec3(up.z, up.x, up.y))));
+               dir =
+                       glm::dmat3(ref, up, glm::cross(ref, up))
+                       * glm::dmat3(glm::eulerAngleYX(-angle.y, -angle.x))
+                       * dir;
+       } else {
+               up.y = 1.0;
+               dir = glm::dmat3(glm::eulerAngleYX(-angle.y, -angle.x)) * dir;
+       }
+       pos += up * (c.Size() * 0.5);
+       up = glm::rotate(up, angle.z, glm::normalize(-dir));
+       view = glm::lookAt(pos - dir, pos, 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 track_orient
+               return glm::mat4(track_orient
                        ? ref->InverseTransform() * b.FromParent() * b.LocalTransform()
-                       : b.FromParent() * b.LocalTransform();
+                       : b.FromParent() * b.LocalTransform());
        } else if (ref->HasParent() && &ref->Parent() == &b) {
-               return track_orient
+               return glm::mat4(track_orient
                        ? ref->InverseTransform() * ref->ToParent() * b.LocalTransform()
-                       : ref->ToParent() * b.LocalTransform();
+                       : ref->ToParent() * b.LocalTransform());
        } else {
-               // TODO: model matrices for path distances > 1
-               return track_orient ? glm::mat4(1.0f) : glm::mat4(ref->LocalTransform());
+               return glm::mat4(track_orient
+                       ? ref->InverseTransform() * ref->ToUniverse() * b.FromUniverse() * b.LocalTransform()
+                       : ref->ToUniverse() * b.FromUniverse() * b.LocalTransform());
        }
 }
 
 void Camera::UpdateProjection() noexcept {
-       projection = glm::perspective(fov, aspect, near, far);
+       projection = glm::infinitePerspective(fov, aspect, near);
 }
 
 
@@ -151,5 +134,9 @@ void Viewport::Clear() {
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 }
 
+void Viewport::ClearDepth() {
+       glClear(GL_DEPTH_BUFFER_BIT);
+}
+
 }
 }