Implement ray3, timer and a simple viewport scanner.

Fix bitmap wrong pixel sequence.
Remove default constructor of bitmap.
Add pixel mixture method.

1 files changed, 27 insertions, 0 deletions

diff --git a/timer.h b/timer.h
new file mode 100644
index 0000000..1f100cd
--- /dev/null
+++ b/timer.h
@@ -0,0 +1,27 @@
+//
+// Created by Keuin on 2022/4/11.
+//
+
+#ifndef RT_TIMER_H
+#define RT_TIMER_H
+
+#include <iostream>
+#include <chrono>
+
+class timer {
+private:
+    typeof(std::chrono::system_clock::now()) start_time;
+public:
+    void start_measure() {
+        fprintf(stderr, "Start timing...\n");
+        start_time = std::chrono::system_clock::now();
+    }
+    void stop_measure() {
+        const auto end = std::chrono::system_clock::now();
+        const auto duration = std::chrono::duration_cast<std::chrono::nanoseconds>(end - start_time);
+        const auto secs = 1e-3 * duration.count() * std::chrono::microseconds::period::num / std::chrono::microseconds::period::den;
+        fprintf(stderr, "Stop timing. Duration: %fs\n", secs);
+    }
+};
+
+#endif //RT_TIMER_H