diff options
| author | madmaxoft@gmail.com <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6> | 2013-04-16 22:48:13 +0200 |
|---|---|---|
| committer | madmaxoft@gmail.com <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6> | 2013-04-16 22:48:13 +0200 |
| commit | 70b79bb9ff1ebb3ad97dd84d7a6dbf5cc7c7f6d4 (patch) | |
| tree | 82aca6f8fae0cef917db710f7841e4cea3e5563e /Tests/NoiseTest/NoiseTest.cpp | |
| parent | Implemented the new cCubicNoise in 2D (diff) | |
| download | cuberite-70b79bb9ff1ebb3ad97dd84d7a6dbf5cc7c7f6d4.tar cuberite-70b79bb9ff1ebb3ad97dd84d7a6dbf5cc7c7f6d4.tar.gz cuberite-70b79bb9ff1ebb3ad97dd84d7a6dbf5cc7c7f6d4.tar.bz2 cuberite-70b79bb9ff1ebb3ad97dd84d7a6dbf5cc7c7f6d4.tar.lz cuberite-70b79bb9ff1ebb3ad97dd84d7a6dbf5cc7c7f6d4.tar.xz cuberite-70b79bb9ff1ebb3ad97dd84d7a6dbf5cc7c7f6d4.tar.zst cuberite-70b79bb9ff1ebb3ad97dd84d7a6dbf5cc7c7f6d4.zip | |
Diffstat (limited to 'Tests/NoiseTest/NoiseTest.cpp')
| -rw-r--r-- | Tests/NoiseTest/NoiseTest.cpp | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/Tests/NoiseTest/NoiseTest.cpp b/Tests/NoiseTest/NoiseTest.cpp new file mode 100644 index 000000000..a5d13a235 --- /dev/null +++ b/Tests/NoiseTest/NoiseTest.cpp @@ -0,0 +1,100 @@ +
+// NoiseTest.cpp
+
+// Implements the main app entrypoint
+
+#include "Globals.h"
+#include <time.h>
+#include "Noise.h"
+
+
+
+
+
+void SaveValues(NOISE_DATATYPE * a_Values, const AString & a_FileName)
+{
+ cFile f;
+ if (!f.Open(a_FileName, cFile::fmWrite))
+ {
+ LOGWARNING("Cannot write file %s", a_FileName.c_str());
+ return;
+ }
+ for (int y = 0; y < 256; y++)
+ {
+ unsigned char val[256];
+ for (int x = 0; x < 256; x++)
+ {
+ val[x] = std::min(255, std::max(0, (int)(256 * a_Values[x + 256 * y])));
+ }
+ f.Write(val, 256);
+ }
+}
+
+
+
+
+
+clock_t TestCubicNoise(void)
+{
+ cCubicNoise Cubic(0);
+ NOISE_DATATYPE Values[256 * 256];
+
+ // Do a speed test:
+ clock_t Begin = clock();
+ for (int i = 0; i < 1000; i++)
+ {
+ Cubic.Generate2D(Values, 256, 256, 0, 25.6, 0, 25.6);
+ }
+ clock_t Ticks = clock() - Begin;
+ LOG("cCubicNoise generating 1000 * 256x256 values took %d ticks (%.02f sec)", Ticks, (double)Ticks / CLOCKS_PER_SEC);
+
+ // Save the results into a file for visual comparison:
+ SaveValues(Values, "NoiseCubic.raw");
+
+ return Ticks;
+}
+
+
+
+
+
+clock_t TestOldNoise(void)
+{
+ cNoise Noise(0);
+ NOISE_DATATYPE Values[256 * 256];
+
+ // Do a speed test:
+ clock_t Begin = clock();
+ for (int i = 0; i < 1000; i++)
+ {
+ for (int y = 0; y < 256; y++)
+ {
+ float fy = (float)y / 10;
+ for (int x = 0; x < 256; x++)
+ {
+ Values[x + 256 * y] = Noise.CubicNoise2D((float)x / 10, fy);
+ } // for x
+ } // for y
+ }
+ clock_t Ticks = clock() - Begin;
+ LOG("cNoise generating 1000 * 256x256 values took %d ticks (%.02f sec)", Ticks, (double)Ticks / CLOCKS_PER_SEC);
+
+ // Save the results into a file for visual comparison:
+ SaveValues(Values, "NoiseOld.raw");
+
+ return Ticks;
+}
+
+
+
+
+
+int main(int argc, char * argv[])
+{
+ new cMCLogger(); // Create a logger (will set itself as the main instance
+
+ clock_t NewTicks = TestCubicNoise();
+ clock_t OldTicks = TestOldNoise();
+ LOG("New method is %.02fx faster", (double)OldTicks / NewTicks);
+ getchar();
+}
|