First cut modernizing and sanitizing

1 files changed, 27 insertions, 0 deletions

diff --git a/transform.cpp b/transform.cpp
new file mode 100644
index 0000000..7b256af
--- /dev/null
+++ b/transform.cpp
@@ -0,0 +1,27 @@
+#include "transform.h"
+#include "camera.h"
+#include <glm/gtx/transform.hpp>
+
+Transform::Transform(glm::vec3 pos, glm::vec3 rot, glm::vec3 scale) : pos {pos}, rot {rot}, scale {scale} { }
+
+glm::mat4
+Transform::GetModel() const
+{
+	const auto posMat = glm::translate(pos);
+	const auto scaleMat = glm::scale(scale);
+	const auto rotX = glm::rotate(rot.x, glm::vec3(1.0, 0.0, 0.0));
+	const auto rotY = glm::rotate(rot.y, glm::vec3(0.0, 1.0, 0.0));
+	const auto rotZ = glm::rotate(rot.z, glm::vec3(0.0, 0.0, 1.0));
+	const auto rotMat = rotX * rotY * rotZ;
+
+	return posMat * rotMat * scaleMat;
+}
+
+glm::mat4
+Transform::GetMVP(const Camera & camera) const
+{
+	const auto VP = camera.GetViewProjection();
+	const auto M = GetModel();
+
+	return VP * M;
+}