[FEAT]Add Canvas

raytracing/CMakeLists.txt

@@ -10,6 +10,7 @@ add_library(raytracing
     src/common.cpp
     src/tuple.cpp
     src/color.cpp
+    src/canvas.cpp
 )
 
 target_include_directories(${PROJECT_NAME}

raytracing/src/canvas.cpp

@@ -0,0 +1,80 @@
+/*!
+ * canvas.cpp
+ *
+ * Copyright (c) 2024, NADAL Jean-Baptiste. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * @Author:  NADAL Jean-Baptiste
+ * @Date: 31/01/2024
+ *
+ */
+
+// This is an independent project of an individual developer. Dear PVS-Studio, please check it.
+// PVS-Studio Static Code Analyzer for C, C++, C#, and Java: http://www.viva64.com
+
+/* ------------------------------------------------------------------------- */
+
+#include "common.h"
+#include "canvas.h"
+
+using namespace Raytracer;
+
+/* ------------------------------------------------------------------------- */
+
+Canvas::Canvas(void) : m_width(0), m_height(0)
+{
+}
+
+/* ------------------------------------------------------------------------- */
+
+Canvas::Canvas(uint16_t a_width, uint16_t a_height) : m_width(a_width), m_height(a_height)
+{
+    m_pixels = std::vector<std::vector<Color>>(m_width, std::vector<Color>(m_height));
+
+    for (int i = 0; i < m_width; ++i)
+        for (int j = 0; j < m_height; ++j)
+            m_pixels[i][j] == Color(0, 0, 0);
+}
+
+/* ------------------------------------------------------------------------- */
+
+uint16_t Canvas::width(void) const
+{
+    return m_width;
+}
+
+/* ------------------------------------------------------------------------- */
+
+uint16_t Canvas::height(void) const
+{
+    return m_height;
+}
+
+/* ------------------------------------------------------------------------- */
+
+const Color &Canvas::pixel_at(uint16_t a_pos_x, uint16_t a_pos_y) const
+{
+    return m_pixels[a_pos_x][a_pos_y];
+}
+
+/* ------------------------------------------------------------------------- */
+
+bool Canvas::write_pixel(uint16_t a_pos_x, uint16_t a_pos_y, const Color &a_color)
+{
+    m_pixels[a_pos_x][a_pos_y] = a_color;
+    return true;
+}

raytracing/src/canvas.h

@@ -0,0 +1,59 @@
+/*!
+ * canvas.h
+ *
+ * Copyright (c) 2024, NADAL Jean-Baptiste. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * @Author:  NADAL Jean-Baptiste
+ * @Date: 31/01/2024
+ *
+ */
+
+#ifndef _RAYTRACER_CANVAS_H
+#define _RAYTRACER_CANVAS_H
+
+/* ------------------------------------------------------------------------- */
+
+#include <vector>
+#include <cstdint>
+
+#include "color.h"
+
+/* ------------------------------------------------------------------------- */
+
+namespace Raytracer
+{
+    class Canvas
+    {
+    public:
+        Canvas(void);
+        Canvas(uint16_t a_width, uint16_t a_height);
+
+        uint16_t width(void) const;
+        uint16_t height(void) const;
+
+        const Color &pixel_at(uint16_t a_pos_x, uint16_t a_pos_y) const;
+        bool write_pixel(uint16_t a_pos_x, uint16_t a_pos_y, const Color &a_color);
+
+    private:
+        uint16_t m_width;
+        uint16_t m_height;
+        std::vector<std::vector<Color>> m_pixels;
+    };
+};
+
+#endif // _RAYTRACER_CANVAS_H

raytracing/src/color.h

@@ -26,6 +26,8 @@
 #ifndef _RAYTRACER_COLOR_H
 #define _RAYTRACER_COLOR_H
 
+/* ------------------------------------------------------------------------- */
+
 namespace Raytracer
 {
     class Color
@@ -60,4 +62,4 @@ namespace Raytracer
     };
 };
 
-#endif
+#endif // _RAYTRACER_COLOR_H

tests/03_canvas.cpp

@@ -0,0 +1,58 @@
+/*!
+ * 03_canvas.cpp
+ *
+ * Copyright (c) 2015-2024, NADAL Jean-Baptiste. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * @Author:  NADAL Jean-Baptiste
+ * @Date: 31/01/2024
+ *
+ */
+
+/*---------------------------------------------------------------------------*/
+
+#include <catch.hpp>
+
+#include "canvas.h"
+
+using namespace Raytracer;
+
+/* ------------------------------------------------------------------------- */
+
+TEST_CASE("[Canvas] Creating a canvas", "[Canvas]")
+{
+    Canvas c(10, 20);
+
+    REQUIRE(c.width() == 10);
+    REQUIRE(c.height() == 20);
+
+    for (int i = 0; i < 10; ++i)
+        for (int j = 0; j < 20; ++j)
+            REQUIRE(c.pixel_at(2, 3) == Color(0, 0, 0));
+}
+
+/* ------------------------------------------------------------------------- */
+
+TEST_CASE("[Canvas] Writing pixels to a canvas", "[Canvas]")
+{
+    Canvas c(10, 20);
+    Color red(1, 0, 0);
+
+    c.write_pixel(2, 3, red);
+
+    REQUIRE(c.pixel_at(2, 3) == red);
+}

tests/CMakeLists.txt

@@ -12,6 +12,7 @@ add_executable(main_test
 
     01_tuples.cpp
     02_colors.cpp
+    03_canvas.cpp
 )
 
 include_directories("${CMAKE_SOURCE_DIR}/tests")