Difference between revisions of "Project3F18"
From Immersive Visualization Lab Wiki
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Now that we have the scene graph classes, it is time to put them to work, and build a robot with them. | Now that we have the scene graph classes, it is time to put them to work, and build a robot with them. | ||
| − | Thanks to our tutor Weichen and former tutor Yining, you have the following robot parts to choose from: head, body, limb, eye, antenna. You will find the OBJ files in [[Media:Robot-parts-2018.zip |this ZIP file]]. Each vertex has not only a 3D coordinate and a normal associated with it, but also a texture coordinate. This allows you to map textures to the surfaces of the robot. | + | Thanks to our tutor Weichen and former tutor Yining, you have the following robot parts to choose from: head, body, limb, eye, antenna. You will find the OBJ files in [[Media:Robot-parts-2018.zip |this ZIP file]]. Each vertex has not only a 3D coordinate and a normal associated with it, but also a texture coordinate. This allows you to map textures to the surfaces of the robot. Note that unlike the previous obj files in the course, each face has different indices for v/vt/vn. So you are going to need to update your parser accordingly, when you add texture support. One of ways to deal with the different indices is to re-order (and duplicate) the v/vt/vn data when parsing so that their indices align. The following code fragment from "OpenGLInsights" might be useful: |
| + | |||
| + | <pre> | ||
| + | // For each triangle | ||
| + | for( unsigned int v=0; v<vertexIndices.size(); v+=3 ) | ||
| + | { | ||
| + | // For each vertex of the triangle | ||
| + | for ( unsigned int i=0; i<3; i+=1 ) | ||
| + | { | ||
| + | unsigned int vertexIndex = vertexIndices[v+i]; | ||
| + | glm::vec3 vertex = temp_vertices[ vertexIndex-1 ]; | ||
| + | |||
| + | unsigned int uvIndex = uvIndices[v+i]; | ||
| + | glm::vec2 uv = temp_uvs[ uvIndex-1 ]; | ||
| + | |||
| + | unsigned int normalIndex = normalIndices[v+i]; | ||
| + | glm::vec3 normal = temp_normals[ normalIndex-1 ]; | ||
| + | |||
| + | out_vertices.push_back(vertex); | ||
| + | out_uvs.push_back(uv); | ||
| + | out_normals.push_back(normal); | ||
| + | } | ||
| + | } | ||
| + | </pre> | ||
Build your own robot using the <tt>addChild</tt> methods. Use at least 3 different types of parts for your robot (e.g., body, head and limb). In total, your robot needs to consist of at least 4 parts, 3 of which need to be moving independently from one another and they need to be connected to the 4th part. (15 points) | Build your own robot using the <tt>addChild</tt> methods. Use at least 3 different types of parts for your robot (e.g., body, head and limb). In total, your robot needs to consist of at least 4 parts, 3 of which need to be moving independently from one another and they need to be connected to the 4th part. (15 points) | ||
Revision as of 14:02, 20 October 2018
Project 3: Textures, Scene Graphs and Culling
To be posted Oct 20.
