added test/dev tools for AABB and Frustums - added simple AABB calculation and instrumentation

src/core/include/pw/core/aabb.hpp

@@ -23,16 +23,32 @@
 #ifndef PW_CORE_AABB_HPP
 #define PW_CORE_AABB_HPP
 
+#include "vector.hpp"
+#include <numeric>
 #include <pw/core/vector.hpp>
 
+#include <algorithm>
+#include <vector>
+
 namespace pw {
 
-struct aabb {
+template <typename Scalar, std::size_t N> struct aabb final {
 
-    vector3 min{};
-    vector3 max{};
+    using value_type = vector<Scalar, N>;
 
-    constexpr vector3 dimension() const noexcept { return max - min; }
+    value_type min{};
+    value_type max{};
+
+    constexpr auto dimension() const noexcept { return max - min; }
+
+    static constexpr auto make(
+        const std::vector<pw::vector<Scalar, N>>& vertices) -> aabb<Scalar, N> {
+        return std::accumulate(std::begin(vertices), std::end(vertices),
+                           aabb{.min{vertices.front()}, .max{vertices.front()}},
+                           [](const auto& prev, const auto& e) {
+            return aabb{.min{e.min(prev.min)}, .max{e.max(prev.max)}};
+        });
+    }
 };
 
 } // namespace pw

src/core/include/pw/core/frustum.hpp

@@ -25,6 +25,7 @@
 #define PW_CORE_FRUSTUM_HPP
 
 #include <pw/core/globals.hpp>
+#include <pw/core/math.hpp>
 
 namespace pw {
 
@@ -35,7 +36,7 @@ template <typename Scalar> struct frustum final {
                                                      Scalar aspect_ratio,
                                                      Scalar z_near,
                                                      Scalar z_far) -> frustum {
-        const auto tangent_half{std::tan(pw::deg_to_rad(fov_h_deg / 2))};
+        const auto tangent_half{std::tan(pw::deg_to_rad(fov_h_deg / Scalar{2}))};
         const auto top{tangent_half * z_near};
         const auto right{top * aspect_ratio};
 

src/core/include/pw/core/vector.hpp

@@ -166,6 +166,18 @@ template <typename Scalar, std::size_t N> struct vector final {
         return operator+=(-v);
     }
 
+    constexpr vector min(const vector& v) const noexcept {
+        return [this, &v]<std::size_t... Ss>(std::index_sequence<Ss...>) {
+            return pw::vector<Scalar, N>{(std::min(v[Ss], (*this)[Ss]))...};
+        }(std::make_index_sequence<N>{});
+    }
+
+    constexpr vector max(const vector& v) const noexcept {
+        return [this, &v]<std::size_t... Ss>(std::index_sequence<Ss...>) {
+            return pw::vector<Scalar, N>{(std::max(v[Ss], (*this)[Ss]))...};
+        }(std::make_index_sequence<N>{});
+    }
+
     constexpr auto project() const noexcept -> vector<Scalar, N - 1> {
         return [this]<std::size_t... Ss>(std::index_sequence<Ss...>) {
             return vector<Scalar, N - 1>{{(*this)[Ss] / (*this)[N - 1]...}};

src/core/tests/CMakeLists.txt

@@ -9,4 +9,6 @@ make_test(pwcore_test_axisangle)
 make_test(pwcore_test_quaternion)
 make_test(pwcore_test_color)
 make_test(pwcore_test_transform_tools)
+make_test(pwcore_test_aabb)
+make_test(pwcore_test_frustum)
 make_test(pwcore_test_mesh)

src/core/tests/pwcore_test_aabb.cpp

@@ -0,0 +1,20 @@
+#include <pw/core/aabb.hpp>
+
+#include <print>
+#include <vector>
+
+auto main() -> int {
+
+    auto vertices = std::vector<pw::vector<float, 3>>{
+        {-1.f, 1.f, 0}, {2.f, -1.f, 3.f}, {0, 0, -1.f}};
+
+    auto aabb_1 =
+        pw::aabb<decltype(vertices)::value_type::value_type,
+                 decltype(vertices)::value_type::coefficients>::make(vertices);
+
+    std::print("aabb::min -> {} {} {}\n", aabb_1.min.x(), aabb_1.min.y(),
+               aabb_1.min.z());
+
+    std::print("aabb::max -> {} {} {}\n", aabb_1.max.x(), aabb_1.max.y(),
+               aabb_1.max.z());
+}

src/core/tests/pwcore_test_frustum.cpp

@@ -0,0 +1,9 @@
+
+#include <pw/core/frustum.hpp>
+#include <vector>
+
+auto main() -> int {
+
+    auto frustum = pw::frustum<float>::make_perspective_symmetric(
+        45.f, float{320} / 240, 0.1f, 1'000.f);
+}

src/core/tests/pwcore_test_vector.cpp

@@ -71,5 +71,10 @@ auto main() -> int {
     auto& [x, y, z] = vec3f;
     std::print("x:{} y:{} z:{}\n", x, y, z);
 
+    auto min_ab{vec3f.min(pw::vector{1.3f, 0.9f, 2.3f})};
+
+    std::print("min((1.3f,0.9f,2.3f),({} {} {})) -> ({} {} {})\n", vec3f.x(),
+               vec3f.y(), vec3f.z(), min_ab.x(), min_ab.y(), min_ab.z());
+
     return 0;
 }

src/visual/include/pw/visual/shader.hpp

@@ -23,6 +23,11 @@ struct shader final {
 
     bool ready() const;
 
+    using uniform_t = std::variant<bool, int, float, double, vector2f, vector3f,
+                                   vector4f, matrix4x4f>;
+    using uniform_entry_t = std::tuple<std::string, uniform_t, int>;
+
+
     shader& set_uniform_at_location(int location, float v);
     shader& set_uniform_at_location(int location, uint32_t v);
     shader& set_uniform_at_location(int location, int32_t v);
@@ -59,9 +64,6 @@ struct shader final {
 
     void use();
 
-    using uniform_t = std::variant<bool, int, float, double, vector2f, vector3f,
-                                   vector4f, matrix4x4f>;
-    using uniform_entry_t = std::tuple<std::string, uniform_t, int>;
 
     using uniform_cache_t = std::vector<uniform_entry_t>;
 

src/visual/include/pw/visual/texture.hpp

@@ -1,70 +1,55 @@
 #ifndef PW_VISUAL_TEXTURE_HPP
 #define PW_VISUAL_TEXTURE_HPP
 
+#include <pw/core/debug.hpp>
 #include <pw/core/globals.hpp>
 #include <pw/core/image.hpp>
-#include <pw/core/debug.hpp>
 
 namespace pw {
 
 class texture {
-public:
-	enum class data_type {
-		color,
-		normal
-	};
+  public:
+    enum class data_type { color, normal };
 
-	enum class data_layout {
-		shape_1d,
-		shape_2d,
-		shape_3d
-	};
+    enum class data_layout { shape_1d, shape_2d, shape_3d };
 
-	enum texture_dimension {
-        dimension_r,
-		dimension_s,
-        dimension_t
-	};
+    enum texture_dimension { dimension_r, dimension_s, dimension_t };
 
-	enum wrap_mode {
-		wrap_repeat,
-		wrap_clamp,
-		wrap_clamp_to_edge,
-		wrap_clamp_to_repeat
-	};
+    enum wrap_mode {
+        wrap_repeat,
+        wrap_clamp,
+        wrap_clamp_to_edge,
+        wrap_clamp_to_repeat
+    };
 
     texture();
-    texture(const image& i,data_layout s);
+    texture(const image& i, data_layout s);
     ~texture();
 
     void set_shape(data_layout s);
-	data_layout shape() const { return _shape; }
+    data_layout shape() const { return _shape; }
 
-	void set_wrap(wrap_mode w);
-	wrap_mode wrap() const { return _wrap; }
+    void set_wrap(wrap_mode w);
+    wrap_mode wrap() const { return _wrap; }
 
     uint32_t native_handle() const;
 
-    bool create(const image &i);
-    void update(const image &i);
+    bool create(const image& i);
+    void update(const image& i);
 
     void bind();
     void unbind();
 
     bool valid() const;
 
-protected:
-
+  protected:
     data_layout _shape = data_layout::shape_2d;
-    wrap_mode _wrap = wrap_mode::wrap_clamp_to_edge;
-
-	struct impl;
-	unique_ptr<impl> _impl;
-
+    wrap_mode _wrap    = wrap_mode::wrap_clamp_to_edge;
 
+    struct impl;
+    unique_ptr<impl> _impl;
 };
 
-}
-
+} // namespace pw
 
 #endif