From 29c24ad72a0986061ab2a330210527a9b3fd534a Mon Sep 17 00:00:00 2001
From: Riyyi <riyyi3@gmail.com>
Date: Sat, 2 Jan 2021 23:12:12 +0100
Subject: [PATCH] Add Transform component

---
 inferno/src/inferno/component/transform.cpp | 55 +++++++++++++++++++++
 inferno/src/inferno/component/transform.h   | 50 +++++++++++++++++++
 2 files changed, 105 insertions(+)
 create mode 100644 inferno/src/inferno/component/transform.cpp
 create mode 100644 inferno/src/inferno/component/transform.h

diff --git a/inferno/src/inferno/component/transform.cpp b/inferno/src/inferno/component/transform.cpp
new file mode 100644
index 0000000..4008b4c
--- /dev/null
+++ b/inferno/src/inferno/component/transform.cpp
@@ -0,0 +1,55 @@
+#include <glm/ext/matrix_transform.hpp> // glm::translate, glm::rotate, glm::scale, glm::radians
+
+#include "inferno/component/transform.h"
+
+namespace Inferno {
+
+	void Transform::update()
+	{
+		// Identity matrix
+		m_transform = glm::mat4(1.0f);
+
+		// Translate
+		m_transform = glm::translate(m_transform, m_translate);
+
+		// Rotate
+		m_transform = glm::rotate(m_transform, glm::radians(m_rotate.x), {1.0, 0.0, 0.0});
+		m_transform = glm::rotate(m_transform, glm::radians(m_rotate.y), {0.0, 1.0, 0.0});
+		m_transform = glm::rotate(m_transform, glm::radians(m_rotate.z), {0.0, 0.0, 1.0});
+
+		// Scale
+		m_transform = glm::scale(m_transform, m_scale);
+	}
+
+// ----------------------------------------
+
+	const LogStream& operator<<(const LogStream& stream, const Transform& value)
+	{
+		stream << "transform "
+		       << value.translate() << " t\n          "
+		       << value.rotate() << " r\n          "
+		       << value.scale() << " s";
+		return stream;
+	}
+
+	const LogStream& operator<<(const LogStream& stream, const glm::vec3& value)
+	{
+		stream << "{ " << value.x << ", " << value.y << ", " << value.z << " }";
+		return stream;
+	}
+
+	const LogStream& operator<<(const LogStream& stream, const glm::vec4& value)
+	{
+		stream << "{ " << value.x << ", " << value.y << ", " << value.z << ", " << value.w << " }";
+		return stream;
+	}
+
+	const LogStream& operator<<(const LogStream& stream, const glm::mat4& value)
+	{
+		stream << "mat4 "
+		       << value[0] << "\n     " << value[1] << "\n     "
+		       << value[2] << "\n     " << value[3];
+		return stream;
+	}
+
+}
diff --git a/inferno/src/inferno/component/transform.h b/inferno/src/inferno/component/transform.h
new file mode 100644
index 0000000..95512dd
--- /dev/null
+++ b/inferno/src/inferno/component/transform.h
@@ -0,0 +1,50 @@
+#ifndef TRANSFORM_H
+#define TRANSFORM_H
+
+#include <glm/ext/matrix_float4x4.hpp> // glm::mat4
+#include <glm/ext/vector_float3.hpp>   // glm::vec3
+
+#include "inferno/log.h"
+
+namespace Inferno {
+
+	class Transform {
+	public:
+		Transform() {}
+		Transform(glm::vec3 translate, glm::vec3 rotate, glm::vec3 scale)
+			: m_translate(translate), m_rotate(rotate), m_scale(scale) {}
+		virtual ~Transform() { dbg(Log::Danger) << "KILLED TRANSFORM"; }
+
+		virtual void update();
+
+		void setTranslate(glm::vec3 translate) { m_translate = translate; }
+		void setRotate(glm::vec3 rotation) { m_rotate = rotation; }
+		void setScale(glm::vec3 scale) { m_scale = scale; }
+		void setTransform(glm::mat4 transform) { m_transform = transform; }
+
+		void setTranslate(float x, float y, float z) { m_translate = { x, y, z }; }
+		void setRotate(float x, float y, float z) { m_rotate = { x, y, z }; }
+		void setScale(float x, float y, float z) { m_scale = { x, y, z }; }
+
+		const glm::vec3& translate() const { return m_translate; }
+		const glm::vec3& rotate() const { return m_rotate; }
+		const glm::vec3& scale() const { return m_scale; }
+		const glm::mat4& transform() const { return m_transform; }
+
+	private:
+		glm::vec3 m_translate;
+		glm::vec3 m_rotate;
+		glm::vec3 m_scale;
+		glm::mat4 m_transform;
+	};
+
+// ----------------------------------------
+
+	const LogStream& operator<<(const LogStream& stream, const Transform& value);
+	const LogStream& operator<<(const LogStream& stream, const glm::vec3& value);
+	const LogStream& operator<<(const LogStream& stream, const glm::vec4& value);
+	const LogStream& operator<<(const LogStream& stream, const glm::mat4& value);
+
+}
+
+#endif // TRANSFORM_H