void TestPolygons (CUniverse &Universe, CXMLElement *pCmdLine)
{
int i;
const int FRAME_WIDTH = 256;
const int FRAME_HEIGHT = 256;
const int OUTPUT_WIDTH = FRAME_WIDTH * 2;
const int OUTPUT_HEIGHT = FRAME_HEIGHT;
// Options
int iCount = pCmdLine->GetAttributeInteger(CONSTLIT("count"));
if (iCount == 0)
iCount = 1000;
int iBltCount = Max(1, iCount / 10);
// Create the output image
CG32bitImage Output;
Output.Create(OUTPUT_WIDTH, OUTPUT_HEIGHT, CG32bitImage::alpha8);
// Create a regular polygon
const int iSides = 17;
const Metric rRadius = 100.0;
const Metric rAngleStep = (TAU / iSides);
TArray<CVector> Shape1;
Shape1.InsertEmpty(iSides);
for (i = 0; i < iSides; i++)
Shape1[i] = CVector::FromPolar(i * rAngleStep, rRadius);
// Create a point array, which we'll use for the binary region
SPoint Shape1Points[iSides];
for (i = 0; i < iSides; i++)
{
Shape1Points[i].x = (int)Shape1[i].GetX();
Shape1Points[i].y = (int)Shape1[i].GetY();
}
// Create a path
CGPath Shape1Path;
Shape1Path.Init(Shape1);
// We do timing tests first
TNumberSeries<Metric> Timing;
// Time rasterization of a binary region
const int CALLS_PER_SAMPLE = 1000;
const int BLTS_PER_SAMPLE = 100;
DWORD dwStart = ::GetTickCount();
for (i = 0; i < iCount; i++)
{
CG16bitBinaryRegion Region;
Region.CreateFromPolygon(iSides, Shape1Points);
if (((i + 1) % CALLS_PER_SAMPLE) == 0)
Timing.Insert((Metric)::sysGetTicksElapsed(dwStart, &dwStart));
}
printf("CG16bitBinaryRegion::CreateFromPolygon: %s ms per %d\n", (LPSTR)strFromDouble(Timing.GetMean()), CALLS_PER_SAMPLE);
// Time rasterization of path
Timing.DeleteAll();
dwStart = ::GetTickCount();
for (i = 0; i < iCount; i++)
{
CGRegion Region;
Shape1Path.Rasterize(&Region, 1);
if (((i + 1) % CALLS_PER_SAMPLE) == 0)
Timing.Insert((Metric)::sysGetTicksElapsed(dwStart, &dwStart));
}
printf("CGPath::Rasterize: %s ms per %d\n", (LPSTR)strFromDouble(Timing.GetMean()), CALLS_PER_SAMPLE);
// Create the regions
CG16bitBinaryRegion Shape1BinaryRegion;
Shape1BinaryRegion.CreateFromPolygon(iSides, Shape1Points);
CGRegion Shape1Region;
Shape1Path.Rasterize(&Shape1Region, 4);
// Time to blt
Timing.DeleteAll();
dwStart = ::GetTickCount();
for (i = 0; i < iBltCount; i++)
{
CGDraw::Region(Output, (FRAME_WIDTH / 2), (FRAME_HEIGHT / 2), Shape1BinaryRegion, CG32bitPixel(255, 255, 255));
if (((i + 1) % BLTS_PER_SAMPLE) == 0)
Timing.Insert((Metric)::sysGetTicksElapsed(dwStart, &dwStart));
}
printf("CGDraw::Region (CG16bitBinaryRegion): %s ms per %d\n", (LPSTR)strFromDouble(Timing.GetMean()), BLTS_PER_SAMPLE);
Timing.DeleteAll();
dwStart = ::GetTickCount();
for (i = 0; i < iBltCount; i++)
{
CGDraw::Region(Output, (FRAME_WIDTH / 2), (FRAME_HEIGHT / 2), Shape1Region, CG32bitPixel(255, 255, 255));
if (((i + 1) % BLTS_PER_SAMPLE) == 0)
Timing.Insert((Metric)::sysGetTicksElapsed(dwStart, &dwStart));
}
printf("CGDraw::Region (CGRegion): %s ms per %d\n", (LPSTR)strFromDouble(Timing.GetMean()), BLTS_PER_SAMPLE);
// Clear
Output.Fill(CG32bitPixel(0, 0, 0));
// Blt result
int x = 0;
int y = 0;
CGDraw::Region(Output, x + (FRAME_WIDTH / 2), y + (FRAME_HEIGHT / 2), Shape1BinaryRegion, CG32bitPixel(255, 255, 255));
x = FRAME_WIDTH;
CGDraw::Region(Output, x + (FRAME_WIDTH / 2), y + (FRAME_HEIGHT / 2), Shape1Region, CG32bitPixel(255, 255, 255));
// Copy to clipboard
OutputImage(Output, NULL_STR);
}
