OTOY Forums

Code: Select all

-- Creates a filename based on a passed in filename template.
-- 
-- @param[in] template
--  Filename template with embedded %? chars which are substituted by something else.
-- @param[in] renderTargetIx
--  Index of the render target.
-- @param[in] frameIx
--  Frame index.
-- @param[in] subFrameIx
--  Sub-frame index.
-- @param[in] name
--  Name of the render target node
-- @param[in] imageSaveFormat
--  Type of the output image (in octane.imageSaveFormat)
-- @param[in] pass
--  Name of the current render pass.
function octaneRenderUtils.createFilename(template, renderTargetIx, frameIx, subFrameIx, name,
        imageSaveFormat, pass)
    assert(template, "expected template")
    assert(renderTargetIx, "expected renderTargetIx")
    assert(frameIx, "expected frameIx")
    assert(subFrameIx, "expected subFrameIx")
    assert(name, "expected name")
    assert(imageSaveFormat, "expected imageSaveFormat")
    assert(pass, "expected pass")

    -- round to integer value incase frameix has a float value
    frameIx = math.floor(frameIx + 0.5) 
    
    -- common extension for our image output types
    local fileExtensions = 
    {
        [octane.imageSaveFormat.PNG_8 ] = "png",
        [octane.imageSaveFormat.PNG_16] = "png",
        [octane.imageSaveFormat.EXR_16] = "exr",
        [octane.imageSaveFormat.EXR_32] = "exr",
    }
    local s = template
    -- %i -> index of the render target
    s = string.gsub(s, "%%i", string.format("%d", renderTargetIx))
    -- %f or %F -> frame number prefixed with zeroes (i.e. 1 -> 001)
    s = string.gsub(s, "%%f", octaneRenderUtils.prefixWithZeroes(frameIx, 4))
    s = string.gsub(s, "%%F", octaneRenderUtils.prefixWithZeroes(frameIx, 4))
    -- %s -> sub frame number
    s = string.gsub(s, "%%s", string.format("%d", subFrameIx))
    -- %n -> name of the node
    s = string.gsub(s, "%%n", name)
    -- %e -> extension
    s = string.gsub(s, "%%e", fileExtensions[imageSaveFormat])
    -- %t -> timestamp (h_m_s)
    s = string.gsub(s, "%%t", os.date("%H_%M_%S"))
    -- %p -> render pass name
    s = string.gsub(s, "%%p", pass)
    return s
end

Code: Select all

    s = string.gsub(s, "%%e", fileExtensions[imageSaveFormat])