Now we can transform!

source/CMakeLists.txt

@@ -3,8 +3,8 @@
 # First most is build as a library
 add_library(rayonnement STATIC)
 
-set(RAY_HEADERS include/tuples.h include/math_helper.h include/colour.h include/canvas.h include/matrix.h)
-set(RAY_SOURCES tuples.cpp math_helper.cpp colour.cpp canvas.cpp matrix.cpp)
+set(RAY_HEADERS include/tuples.h include/math_helper.h include/colour.h include/canvas.h include/matrix.h include/transformation.h)
+set(RAY_SOURCES tuples.cpp math_helper.cpp colour.cpp canvas.cpp matrix.cpp transformation.cpp)
 
 target_include_directories(rayonnement PUBLIC include)
 target_sources(rayonnement PRIVATE ${RAY_HEADERS} ${RAY_SOURCES})

source/include/transformation.h

@@ -0,0 +1,24 @@
+/*
+ *  DoRayMe - a quick and dirty Raytracer
+ *  Transformation header
+ *
+ *  Created by Manoël Trapier
+ *  Copyright (c) 2020 986-Studio.
+ *
+ */
+#ifndef DORAYME_TRANSFORMATION_H
+#define DORAYME_TRANSFORMATION_H
+
+#include <matrix.h>
+
+Matrix translation(double x, double y, double z);
+
+Matrix scaling(double x, double y, double z);
+
+Matrix rotation_x(double angle);
+Matrix rotation_y(double angle);
+Matrix rotation_z(double angle);
+
+Matrix shearing(double Xy, double Xx, double Yx, double Yz, double Zx, double Zy);
+
+#endif /* DORAYME_TRANSFORMATION_H */

source/transformation.cpp

@@ -0,0 +1,84 @@
+/*
+ *  DoRayMe - a quick and dirty Raytracer
+ *  Transformation implementation
+ *
+ *  Created by Manoël Trapier
+ *  Copyright (c) 2020 986-Studio.
+ *
+ */
+#include <math.h>
+
+#include <transformation.h>
+
+Matrix translation(double x, double y, double z)
+{
+   Matrix ret = Matrix4().identity();
+   
+   ret.set(0, 3, x);
+   ret.set(1, 3, y);
+   ret.set(2, 3, z);
+   
+   return ret;
+}
+
+Matrix scaling(double x, double y, double z)
+{
+   Matrix ret = Matrix4();
+   
+   ret.set(0, 0, x);
+   ret.set(1, 1, y);
+   ret.set(2, 2, z);
+   ret.set(3, 3, 1);
+   
+   return ret;
+}
+
+Matrix rotation_x(double angle)
+{
+   Matrix ret = Matrix4().identity();
+   
+   ret.set(1, 1, cos(angle));
+   ret.set(1, 2, -sin(angle));
+   ret.set(2, 1, sin(angle));
+   ret.set(2, 2, cos(angle));
+   
+   return ret;
+}
+
+Matrix rotation_y(double angle)
+{
+   Matrix ret = Matrix4().identity();
+   
+   ret.set(0, 0, cos(angle));
+   ret.set(0, 2, sin(angle));
+   ret.set(2, 0, -sin(angle));
+   ret.set(2, 2, cos(angle));
+   
+   return ret;
+}
+
+Matrix rotation_z(double angle)
+{
+   Matrix ret = Matrix4().identity();
+   
+   ret.set(0, 0, cos(angle));
+   ret.set(0, 1, -sin(angle));
+   ret.set(1, 0, sin(angle));
+   ret.set(1, 1, cos(angle));
+   
+   return ret;
+}
+
+Matrix shearing(double Xy, double Xz, double Yx, double Yz, double Zx, double Zy)
+{
+    Matrix ret = Matrix4().identity();
+
+    ret.set(0, 1, Xy);
+    ret.set(0, 2, Xz);
+    ret.set(1, 0, Yx);
+    ret.set(1, 2, Yz);
+    ret.set(2, 0, Zx);
+    ret.set(2, 1, Zy);
+
+    return ret;
+}