The workbench in the scene has lots of hard surfaces, so to add some variety to the feel of the
scene I want to have a cloth or rag draped over one of the boxes. iClone 6 physics makes it
possible to get a soft cloth with just a few steps.
First you need to setup some rigid-body physics on the object that the soft cloth will be draped onto. In this case, I have a small wooden box that I will drape with the cloth.
Select the box first and, with it highlighted, find the Physics properties in the Modify panel; Activate them for rigid-body physics and then uncheck Object Gravity to keep the box from falling into infinity when you play your scene.
Next, select the plane that is to become the soft cloth and, again, go to the Modify Panel and open the Physics settings. This time you will want to Activate Physics and make sure the Object Gravity is checked, as we will want our soft cloth to fall and drape over the box. Gravity will be necessary, but the box under with the rigid-body physics will keep our cloth from falling into infinity.
Select the soft cloth setting and then choose to Edit the Weight map, which is determined by a black-to-white gradient - what stays rigid is black and what hangs from the rigid point is white. For this project my weight map will be full white because I want the entire cloth to drape without any hanging points.
Next you will need to choose from the Presets for Cloth, Hair or Wind. Since this is an interior shot there is no wind, and it's cloth, not hair, so we only need to be concerned with tackling the cloth settings. I've imagined this cloth to be like a soft suede cloth, so I choose the Leather to get the cloth type to drape and lay the way I want it.
After you have done the settings in the Modify panel you will want to go to the left of the Play Controls and change the Time Mode Switch from Realtime to By Frame. This will ensure your physics cloth drops and drapes properly. Pressing the play bar will advance the playhead a few frames and reveal your soft-cloth effect.
Above is a render from Indigo showing the Leather Substanced soft-cloth along with Substance materials on the robot, box in the background and the workbench. View this video tutorial to learn more about soft-cloth in iClone 6: