Once your cubical maps are loaded into TurboCAD they are called environments and can be found in the Environments Palette. There are three simple ways to apply an environment to the Render Scene Environment in TurboCAD. First, open or create a TurboCAD file that contains at least one 3D object with a material assigned to it. If you haven't already done so, install the Cubical Map and Luminance Presets that come with SOFTBOX (HDRI). Now use one of the following three methods to assign an environment to the Render Scene Environment of your file.
Bring up the Environments Palette either by clicking it's tab or by selecting View → Environments Palette... from the Main Menu. Navigate to the "SOFTBOX (HDRI)" category using the Category drop-down list. Right-Click on the environment thumbnail labeled "Broad Lighting Plus Fill". Choose Set Environment from the context menu (figure 1). The "Broad Lighting Plus Fill" environment is now applied to the Render Scene Environment.
figure 1 - Set Environment
With the Environments Palette still open and the SOFTBOX (HDRI) category visible, double-click one of the available preset thumbnails. The double-clicked item will be applied to the Render Scene Environment.
From the Main Menu select Options → Render Scene Environment... and TurboCAD will open the Drawing Setup window. If "Render Scene Environment" is not already selected on the left, select it now. Choose the SOFTBOX (HDRI) category from the Category drop-down list and choose Broad Lighting Plus Fill from the Environment drop-down list (figure 2). Press the OK button and you're finished.