Moved view functionality into own class

1 files changed, 74 insertions, 0 deletions

diff --git a/View.cpp b/View.cpp
new file mode 100644
index 0000000..90bc542
--- /dev/null
+++ b/View.cpp
@@ -0,0 +1,74 @@
+#include "View.h"
+
+#include <algorithm>
+#include <cmath>
+#include <memory>
+#include <utility>
+
+#include <raylib.h>
+
+#include "Source.h"
+
+
+View::View(std::unique_ptr<Source> source) :
+    m_camera {},
+    m_source {std::move(source)},
+    m_projected {}
+{
+    m_camera.position = Vector3{10.0f, 10.0f, 10.0f};
+    m_camera.target = Vector3{0.0f, 0.0f, 0.0f};
+    m_camera.up = Vector3{0.0f, 1.0f, 0.0f};
+    m_camera.fovy = 45;
+    m_camera.projection = CAMERA_PERSPECTIVE;
+    SetCameraMode(m_camera, CAMERA_ORBITAL);
+}
+
+
+void
+View::update(const float dt)
+{
+    UpdateCamera(&m_camera);
+    const int height = GetScreenHeight();
+    const int width = GetScreenWidth();
+    const auto killmails = m_source->all();
+    m_projected.clear();
+    m_projected.reserve(killmails.size());
+    for (const auto& km : killmails) {
+        const auto pos = GetWorldToScreen(km.position, m_camera);
+        const float depth =
+            std::sqrt(
+                std::pow(m_camera.position.x - km.position.x, 2) +
+                std::pow(m_camera.position.y - km.position.y, 2) +
+                std::pow(m_camera.position.z - km.position.z, 2));
+        if (0 > pos.x || width < pos.x || 0 > pos.y || height < pos.y)
+            continue;
+        const auto base = GetWorldToScreen({km.position.x, 0.0f, km.position.z}, m_camera);
+        m_projected.push_back(Projected{pos, base, depth});
+    }
+    std::sort(m_projected.begin(), m_projected.end(), [](auto& a, auto& b){ return a.depth > b.depth; });
+}
+
+
+void
+View::draw() const
+{
+    BeginDrawing();
+    ClearBackground(RAYWHITE);
+    BeginMode3D(m_camera);
+    DrawGrid(12, 1.0f);
+    EndMode3D();
+    for (const auto& point : m_projected) {
+        DrawLine(point.base.x, point.base.y, point.pos.x, point.pos.y, LIGHTGRAY);
+        DrawCircle(point.pos.x, point.pos.y, 3, RED);
+    }
+    DrawFPS(5, 5);
+    int y = 25;
+    const int height = GetScreenHeight();
+    for (const auto& point : m_projected) {
+        DrawText(TextFormat("%5.1f x %5.1f x %5.1f", point.pos.x, point.pos.y, point.depth), 5, y, 10, DARKGRAY);
+        y += 10;
+        if (y > height)
+            break;
+    }
+    EndDrawing();
+}