AnvilStats: Implemented a cImageComposingCallback class.

This will ease the creation of callbacks that produce per-region images of stuff.

Tools/AnvilStats/ImageComposingCallback.cpp

@@ -0,0 +1,189 @@
+
+// ImageComposingCallback.cpp
+
+// Implements the cImageComposingCallback class that implements a subset of cCallback for composing per-region images
+
+#include "Globals.h"
+#include "ImageComposingCallback.h"
+
+
+
+
+
+cImageComposingCallback::cImageComposingCallback(const AString & a_FileNamePrefix) :
+	m_FileNamePrefix(a_FileNamePrefix),
+	m_CurrentRegionX(INVALID_REGION_COORD),
+	m_CurrentRegionZ(INVALID_REGION_COORD),
+	m_ImageData(new int[32 * 16 * 32 * 16])
+{
+}
+
+
+
+
+
+cImageComposingCallback::~cImageComposingCallback()
+{
+	delete[] m_ImageData;
+}
+
+
+
+
+
+bool cImageComposingCallback::OnNewRegion(int a_RegionX, int a_RegionZ)
+{
+	ASSERT(m_CurrentRegionX == INVALID_REGION_COORD);
+	ASSERT(m_CurrentRegionZ == INVALID_REGION_COORD);  // Has any previous region been finished properly?
+	
+	m_CurrentRegionX = a_RegionX;
+	m_CurrentRegionZ = a_RegionZ;
+	OnEraseImage();
+	
+	return CALLBACK_CONTINUE;
+}
+
+
+
+
+
+void cImageComposingCallback::OnRegionFinished(int a_RegionX, int a_RegionZ)
+{
+	ASSERT(m_CurrentRegionX != INVALID_REGION_COORD);
+	ASSERT(m_CurrentRegionZ != INVALID_REGION_COORD);  // Has a region been started properly?
+	ASSERT(m_CurrentRegionX == a_RegionX);
+	ASSERT(m_CurrentRegionZ == a_RegionZ);  // Is it the same region that has been started?
+	
+	AString FileName = GetFileName(a_RegionX, a_RegionZ);
+	if (!FileName.empty())
+	{
+		OnBeforeImageSaved(a_RegionX, a_RegionZ, FileName);
+		SaveImage(FileName);
+		OnAfterImageSaved(a_RegionX, a_RegionZ, FileName);
+	}
+	
+	m_CurrentRegionX = INVALID_REGION_COORD;
+	m_CurrentRegionZ = INVALID_REGION_COORD;
+}
+
+
+
+
+
+AString cImageComposingCallback::GetFileName(int a_RegionX, int a_RegionZ)
+{
+	return Printf("%s.%d.%d", m_FileNamePrefix.c_str(), a_RegionX, a_RegionZ);
+}
+
+
+
+
+
+void cImageComposingCallback::OnEraseImage(void)
+{
+	// By default erase the image to black:
+	EraseImage(0);
+}
+
+
+
+
+
+void cImageComposingCallback::EraseImage(int a_Color)
+{
+	for (int i = 0; i < PIXEL_COUNT; i++)
+	{
+		m_ImageData[i] = a_Color;
+	}
+}
+
+
+
+
+
+void cImageComposingCallback::EraseChunk(int a_Color, int a_RelChunkX, int a_RelChunkZ)
+{
+	int Base = a_RelChunkZ * IMAGE_HEIGHT + a_RelChunkX * 16;
+	for (int v = 0; v < 16; v++)
+	{
+		int BaseV = Base + v * IMAGE_HEIGHT;
+		for (int u = 0; u < 16; u++)
+		{
+			m_ImageData[BaseV + u] = a_Color;
+		}
+	}  // for y
+}
+
+
+
+
+
+void cImageComposingCallback::SetPixel(int a_RelU, int a_RelV, int a_Color)
+{
+	ASSERT((a_RelU >= 0) && (a_RelU < IMAGE_WIDTH));
+	ASSERT((a_RelV >= 0) && (a_RelV < IMAGE_HEIGHT));
+	
+	m_ImageData[a_RelU + IMAGE_WIDTH * a_RelV] = a_Color;
+}
+
+
+
+
+
+int cImageComposingCallback::GetPixel(int a_RelU, int a_RelV)
+{
+	if ((a_RelU < 0) || (a_RelU >= IMAGE_WIDTH) || (a_RelV < 0) || (a_RelV >= IMAGE_HEIGHT))
+	{
+		// Outside the image data
+		return -1;
+	}
+	
+	return m_ImageData[a_RelU + IMAGE_WIDTH * a_RelV];
+}
+
+
+
+
+
+
+void cImageComposingCallback::SetPixelURow(int a_RelUStart, int a_RelV, int a_CountU, int * a_Pixels)
+{
+	ASSERT((a_RelUStart >= 0) && (a_RelUStart + a_CountU < IMAGE_WIDTH));
+	ASSERT((a_RelV >= 0) && (a_RelV < IMAGE_HEIGHT));
+	ASSERT(a_Pixels != NULL);
+
+	int Base = a_RelUStart + a_RelV * IMAGE_WIDTH;
+	for (int u = 0; u < a_CountU; u++)
+	{
+		m_ImageData[Base + u] = a_Pixels[u];
+	}
+}
+
+
+
+
+
+void cImageComposingCallback::SaveImage(const AString & a_FileName)
+{
+	cFile f(a_FileName, cFile::fmWrite);
+	if (!f.IsOpen())
+	{
+		return;
+	}
+
+	// Header for BMP files (is the same for the same-size files)
+	static const unsigned char BMPHeader[] =
+	{
+		0x42, 0x4D, 0x36, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x00, 0x00, 0x00, 0x28, 0x00,
+		0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0xfe, 0xff, 0xff, 0x01, 0x00, 0x20, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x13, 0x0B, 0x00, 0x00, 0x13, 0x0B, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	} ;
+
+	f.Write(BMPHeader, sizeof(BMPHeader));
+	f.Write(m_ImageData, PIXEL_COUNT * 4);
+}
+
+
+
+