[an error occurred while processing this directive] [an error occurred while processing this directive][an error occurred while processing this directive] [an error occurred while processing this directive] [an error occurred while processing this directive] [an error occurred while processing this directive] (none) [an error occurred while processing this directive] [an error occurred while processing this directive] [an error occurred while processing this directive] [an error occurred while processing this directive] [an error occurred while processing this directive][an error occurred while processing this directive]
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Lars Riisgaard Ribe skrev: > Det betyder, at jeg har et 3D datasæt ( et 3D billede), > som jeg vil kunne lave et 3D billede af. Det skal laves > således, at de mørke områder er transparente, hvorimod de > lyse områder ikke er. Hvis vi ser bort fra eventuelle transformationer af billedet, så kan det vel klares med (uafprøvet Ada-kode): type Model is array (X_Range, Y_Range, Z_Range) of Scalar; type Image is array (X_Range, Y_Range) of Scalar; procedure Render (Data : in Model; As : out Image) is begin for X in Model'Range (1) loop for Y in Model'Range (2) loop Image (X, Y) := 1.0; for Z in Model'Range (3) loop Image (X, Y) := Image (X, Y) * Model (X, Y, Z); end loop; end loop; end loop; end Render; Så kan det godt nok tænkes at du vil tage den Model'Length (3). rod af værdierne i Image, før du viser dem. Ellers får du en opløsningsafhængig effekt i hvordan gennemsigtigheden varierer. Du kan selvfølgelig også lave ting med andre projektioner end den simple parallelle projektion jeg bruger i eksemplet ovenfor. Jacob -- "[...] *transfer* a bit of salary from the person who writes a bug to the person that finds a bug..." -- Keith Ray
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