I have created a simple 3D animation, which is a cube that is bobbing its head back and forth, and using Blender to export the animation into 3DS Max file format.
According to this link here, I have satisfied the first and second requirements, which are to use a file format (3DS Max file) that is saved as a binary file, and to create a 3DS file loader.
From here on, I couldn't follow the instructions. The respondent said to skin the weighted mesh by going through the vertex shader, does it mean I have to use GLSL to do animation by controlling the vertex and calculate the weight on the mesh? I even got more confused with the part that says to use the matrices that were included with the skins. But it got me thinking that maybe 3DS Max files have a file structure hierarchy that stores data useful for these.
I went to this site that teaches how to create a 3DS Max loader. There, it includes the following hierarchical file structure known.
MAIN CHUNK 0x4D4D 3D EDITOR CHUNK 0x3D3D OBJECT BLOCK 0x4000 TRIANGULAR MESH 0x4100 VERTICES LIST 0x4110 FACES DESCRIPTION 0x4120 FACES MATERIAL 0x4130 MAPPING COORDINATES LIST 0x4140 SMOOTHING GROUP LIST 0x4150 LOCAL COORDINATES SYSTEM 0x4160 LIGHT 0x4600 SPOTLIGHT 0x4610 CAMERA 0x4700 MATERIAL BLOCK 0xAFFF MATERIAL NAME 0xA000 AMBIENT COLOR 0xA010 DIFFUSE COLOR 0xA020 SPECULAR COLOR 0xA030 TEXTURE MAP 1 0xA200 BUMP MAP 0xA230 REFLECTION MAP 0xA220 [SUB CHUNKS FOR EACH MAP] MAPPING FILENAME 0xA300 MAPPING PARAMETERS 0xA351 KEYFRAMER CHUNK 0xB000 MESH INFORMATION BLOCK 0xB002 SPOT LIGHT INFORMATION BLOCK 0xB007 FRAMES (START AND END) 0xB008 OBJECT NAME 0xB010 OBJECT PIVOT POINT 0xB013 POSITION TRACK 0xB020 ROTATION TRACK 0xB021 SCALE TRACK 0xB022 HIERARCHY POSITION 0xB030
I saw that there is a chunk that store animation frames, which are probably keyframes that appears in Blender's Dopesheet. But the file structure didn't tell me where I can load (or read) matrices that is used to calculate the vertices when the animation is being played. Thus, I'm stucked.
1. What does the third requirement meant for me to do?
2. Are there examples / sample codes that loads 3DS Max files and animate the models in the program?
3. What else should I need to learn more about?
4. In GLSL, what parts should I learn more about when it comes to animation?
Thanks in advance.