From 400410fcd436d5e4310bfa779f0309c5fae5b2c2 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sat, 16 Jan 2021 18:09:15 +0000
Subject: Initial commit

Stripped back and formatted from https://github.com/BennyQBD/ModernOpenGLTutorial/
---
 transform.h | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 transform.h

(limited to 'transform.h')

diff --git a/transform.h b/transform.h
new file mode 100644
index 0000000..ed9b703
--- /dev/null
+++ b/transform.h
@@ -0,0 +1,79 @@
+#ifndef TRANSFORM_INCLUDED_H
+#define TRANSFORM_INCLUDED_H
+
+#include "camera.h"
+#include <glm/glm.hpp>
+#include <glm/gtx/transform.hpp>
+
+struct Transform {
+public:
+	Transform(const glm::vec3 & pos = glm::vec3(), const glm::vec3 & rot = glm::vec3(),
+			const glm::vec3 & scale = glm::vec3(1.0f, 1.0f, 1.0f))
+	{
+		this->pos = pos;
+		this->rot = rot;
+		this->scale = scale;
+	}
+
+	inline glm::mat4
+	GetModel() const
+	{
+		glm::mat4 posMat = glm::translate(pos);
+		glm::mat4 scaleMat = glm::scale(scale);
+		glm::mat4 rotX = glm::rotate(rot.x, glm::vec3(1.0, 0.0, 0.0));
+		glm::mat4 rotY = glm::rotate(rot.y, glm::vec3(0.0, 1.0, 0.0));
+		glm::mat4 rotZ = glm::rotate(rot.z, glm::vec3(0.0, 0.0, 1.0));
+		glm::mat4 rotMat = rotX * rotY * rotZ;
+
+		return posMat * rotMat * scaleMat;
+	}
+
+	inline glm::mat4
+	GetMVP(const Camera & camera) const
+	{
+		glm::mat4 VP = camera.GetViewProjection();
+		glm::mat4 M = GetModel();
+
+		return VP * M; // camera.GetViewProjection() * GetModel();
+	}
+
+	inline glm::vec3 *
+	GetPos()
+	{
+		return &pos;
+	}
+	inline glm::vec3 *
+	GetRot()
+	{
+		return &rot;
+	}
+	inline glm::vec3 *
+	GetScale()
+	{
+		return &scale;
+	}
+
+	inline void
+	SetPos(glm::vec3 & pos)
+	{
+		this->pos = pos;
+	}
+	inline void
+	SetRot(glm::vec3 & rot)
+	{
+		this->rot = rot;
+	}
+	inline void
+	SetScale(glm::vec3 & scale)
+	{
+		this->scale = scale;
+	}
+
+protected:
+private:
+	glm::vec3 pos;
+	glm::vec3 rot;
+	glm::vec3 scale;
+};
+
+#endif
-- 
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