Merge e985629f09 into 7d491570e4

lib/typhoon

@@ -1 +1 @@
-Subproject commit 1c9e7831c874068e7c939a7dea8790eef6513d78
+Subproject commit dc8f10e407daa8bdf7e90d9438b55d5883780825

src/ui/simple/CSimpleCamera.cpp

@@ -0,0 +1,112 @@
+#include "ui/simple/CSimpleCamera.hpp"
+#include "model/Model2.hpp"
+#include <tempest/Math.hpp>
+
+namespace {
+
+void FaceDirection(const C3Vector& direction, C3Vector& xPrime, C3Vector& yPrime, C3Vector& zPrime) {
+    STORM_ASSERT(CMath::fnotequal(direction.SquaredMag(), 0.0f));
+
+    // Forward
+    xPrime = direction;
+
+    // Right
+    if (CMath::fequal(xPrime.SquaredMag(), 0.0f)) {
+        yPrime.x = 1.0f;
+        yPrime.y = 0.0f;
+        yPrime.z = 0.0f;
+    } else {
+        yPrime.x = -xPrime.y;
+        yPrime.y = xPrime.x;
+        yPrime.z = 0.0f;
+
+        CMath::normalize(yPrime.x, yPrime.y);
+    }
+
+    // Up (Forward cross Right)
+    zPrime = C3Vector::Cross(xPrime, yPrime);
+}
+
+void BuildBillboardMatrix(const C3Vector& direction, C33Matrix& rotation) {
+    C3Vector xPrime = {};
+    C3Vector yPrime = {};
+    C3Vector zPrime = {};
+
+    FaceDirection(direction, xPrime, yPrime, zPrime);
+
+    // Forward
+    rotation.a0 = xPrime.x;
+    rotation.a1 = xPrime.y;
+    rotation.a2 = xPrime.z;
+
+    // Right
+    rotation.b0 = yPrime.x;
+    rotation.b1 = yPrime.y;
+    rotation.b2 = yPrime.z;
+
+    // Up
+    rotation.c0 = zPrime.x;
+    rotation.c1 = zPrime.y;
+    rotation.c2 = zPrime.z;
+}
+
+}
+
+CSimpleCamera::CSimpleCamera(float nearZ, float farZ, float fov) {
+    this->m_scene = nullptr;
+
+    this->m_nearZ = nearZ;
+    this->m_farZ = farZ;
+    this->m_fov = fov;
+    this->m_aspect = 1.0f;
+
+    this->SetFacing(0.0f, 0.0f, 0.0f);
+}
+
+float CSimpleCamera::FOV() {
+    return this->m_fov;
+}
+
+C3Vector CSimpleCamera::Forward() const {
+    return { this->m_facing.a0, this->m_facing.a1, this->m_facing.a2 };
+}
+
+CM2Scene* CSimpleCamera::GetScene() {
+    if (!this->m_scene) {
+        this->m_scene = M2CreateScene();
+    }
+
+    return this->m_scene;
+}
+
+C3Vector CSimpleCamera::Right() const {
+    return { this->m_facing.b0, this->m_facing.b1, this->m_facing.b2 };
+}
+
+void CSimpleCamera::SetFacing(const C3Vector& forward) {
+    BuildBillboardMatrix(forward, this->m_facing);
+}
+
+void CSimpleCamera::SetFacing(const C3Vector& forward, const C3Vector& up) {
+    // TODO
+}
+
+void CSimpleCamera::SetFacing(float yaw, float pitch, float roll) {
+    this->m_facing.FromEulerAnglesZYX(yaw, pitch, roll);
+}
+
+void CSimpleCamera::SetFarZ(float farZ) {
+    this->m_farZ = farZ;
+}
+
+void CSimpleCamera::SetFieldOfView(float fov) {
+    this->m_fov = fov;
+}
+
+void CSimpleCamera::SetNearZ(float nearZ) {
+    this->m_nearZ = nearZ;
+}
+
+C3Vector CSimpleCamera::Up() const {
+    return { this->m_facing.c0, this->m_facing.c1, this->m_facing.c2 };
+}

src/ui/simple/CSimpleCamera.hpp

@@ -0,0 +1,38 @@
+#ifndef UI_SIMPLE_C_SIMPLE_CAMERA_HPP
+#define UI_SIMPLE_C_SIMPLE_CAMERA_HPP
+
+#include <tempest/Matrix.hpp>
+#include <tempest/Vector.hpp>
+
+class CM2Scene;
+
+class CSimpleCamera {
+    public:
+        // Virtual public member functions
+        virtual float FOV();
+        virtual C3Vector Forward() const;
+        virtual C3Vector Right() const;
+        virtual C3Vector Up() const;
+
+        // Public member functions
+        CSimpleCamera(float nearZ, float farZ, float fov);
+        CM2Scene* GetScene();
+        void SetFacing(const C3Vector& forward);
+        void SetFacing(const C3Vector& forward, const C3Vector& up);
+        void SetFacing(float yaw, float pitch, float roll);
+        void SetFarZ(float farZ);
+        void SetFieldOfView(float fov);
+        void SetNearZ(float nearZ);
+
+    protected:
+        // Protected member variables
+        CM2Scene* m_scene;
+        C3Vector m_position;
+        C33Matrix m_facing;
+        float m_nearZ;
+        float m_farZ;
+        float m_fov;
+        float m_aspect;
+};
+
+#endif