Added the camera to the 05th excerscise.

05_sdl_software_renderer/camera.cpp

@@ -0,0 +1,24 @@
+#include "camera.h"
+
+#include "renderer.h"
+
+void Camera::bind() {
+    Renderer::get_singleton()->set_integer_scaling(integer_scaling);
+
+    Renderer::get_singleton()->set_scale(scale_w, scale_h);
+
+    Renderer::get_singleton()->set_viewport(viewport);
+    Renderer::get_singleton()->set_clip_rect(&clip_rect);
+}
+
+Camera::Camera() {
+    integer_scaling = false;
+
+    scale_w = 1;
+    scale_h = 1;
+
+    viewport = Renderer::get_singleton()->get_viewport();
+    clip_rect = Renderer::get_singleton()->get_clip_rect();
+}
+Camera::~Camera() {
+}

05_sdl_software_renderer/camera.h

@@ -0,0 +1,22 @@
+#ifndef CAMERA_H
+#define CAMERA_H
+
+#include <SDL.h>
+
+#include "rect2.h"
+
+class Camera {
+public:
+    void bind();
+
+    Camera();
+    virtual ~Camera();
+
+    bool integer_scaling;
+    float scale_w;
+    float scale_h;
+    Rect2 viewport;
+    Rect2 clip_rect;
+};
+
+#endif

05_sdl_software_renderer/compile.sh

@@ -22,8 +22,9 @@ g++ -Wall -g $(sdl2-config --cflags) -c renderer.cpp -o obj/renderer.o
 g++ -Wall -g $(sdl2-config --cflags) -c image.cpp -o obj/image.o 
 g++ -Wall -g $(sdl2-config --cflags) -c texture.cpp -o obj/texture.o 
 g++ -Wall -g $(sdl2-config --cflags) -c sprite.cpp -o obj/sprite.o 
+g++ -Wall -g $(sdl2-config --cflags) -c camera.cpp -o obj/camera.o 
 
 g++ -Wall -g $(sdl2-config --cflags) -c main.cpp -o obj/main.o
 
-g++ -o bin/program obj/math.o obj/rect2.o obj/color.o obj/string.o obj/renderer.o obj/image.o obj/texture.o obj/sprite.o obj/main.o $(sdl2-config --libs) 
+g++ -o bin/program obj/math.o obj/rect2.o obj/color.o obj/string.o obj/renderer.o obj/image.o obj/texture.o obj/sprite.o obj/camera.o obj/main.o $(sdl2-config --libs) 
 

06_sdl_application/camera.cpp

@@ -18,7 +18,7 @@ Camera::Camera() {
     scale_h = 1;
 
     viewport = Renderer::get_singleton()->get_viewport();
-    clip_rect = Renderer::get_singleton()->get_viewport();
+    clip_rect = Renderer::get_singleton()->get_clip_rect();
 }
 Camera::~Camera() {
 }