Answered
Cannot get DrawArtSuite;;DrawArt to work
HI, I am trying to use DrawArt to generate thumbnails for display in CEP panels
This relevant part of my code:
int dimen = 48;
AIDrawArtAGMPort port;
if(error = sAIDrawArt->CreateImagePort(dimen, dimen, &port.port))
return error;
AIRealRect bounds;
if(error = sAIArt->GetArtBounds(art, &bounds))
return error;
AIDrawArtData artData;
artData.version = kAIDrawArtSuiteVersion;
artData.output.port = port;
artData.origin.v = bounds.top;
artData.origin.h = bounds.left;
artData.destClipRect.left = artData.destClipRect.top = 0;
artData.destClipRect.right = dimen;
artData.destClipRect.bottom = -dimen; // tried + and -
artData.eraseDestClipRect = 1;
artData.matrix.Init();
artData.matrix.a = artData.matrix.d = dimen / max(bounds.right-bounds.left, bounds.top-bounds.bottom);
artData.flags = kAIDrawArtPreviewBit;
artData.type = kAIDrawArtAGMPortOutput;
artData.doSrcClip = 0;
artData.art = art;
const AIColorConvertOptions options;
if(error = sAIDrawArt->BeginDrawArt(&artData, options, artData.flags))
return error;
if(error = sAIDrawArt->DrawArt(&artData, options))
return error;
if(error = sAIDrawArt->EndDrawArt(&artData, options))
return error;
const ai::uint8* pixelData = NULL;
if(error = sAIDrawArt->GetImagePixelData(port.port, &pixelData, &length, NULL, NULL))
return error;. When this finishes, I get data all zeroes
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