Modelling And Simple Render

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Modelling And Simple Render

Rendering a model is not a simple process. It will be easier to understandhow things work if we start with the simplest example possible and gradually addcomplexity. When you render complex models you will want to designthose models in Blender (or some other modeling tool). For our purposes here,let's manually define a very simple 3D model to work with.
Modelling And Simple Render Software
Modelling And Simple Render Definition
Modelling And Simple Render Calculator
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Such a range of appearances would be very difﬁcult to model and render with current methods. In this paper, we introduce new tech-niques for the modeling and rendering of weathered stone. The complex mechanisms of stone weathering are not fully un-derstood based on ﬁrst principles; our scientiﬁc knowledge is in-complete.
A Simple 3D Model¶Examine the code in the ‘simple_model_01.js' file below. Note the following big ideas:
Rendering a SketchUp Model IN BLENDER! Quick and Easy Tutorial. Learn a quick way to export a SketchUp model into Blender, then use Blender to render that model! We'll talk about exporting, importing, lighting, and rendering our scene! Do you like these SketchUp tutorials and videos?
The Triangle function (line 37) is a class definition that contains nofunctionality. It will hold the data that defines one triangle. To startoff simple, a Triangle object will hold an array of three vertices.
The SimpleModel function (line 48) is a class definition that contains nofunctionality. It will hold a 'name' for a model and an array oftriangle objects. A model, in its simplest form, is just a collection oftriangles.
The CreatePyramid function (line 59) creates an instance of theSimpleModel classcalled model, gives it a name called ‘simple', and sets its array of trianglesto the 4 triangles of a pyramid.
Note: You can edit the JavaScript code and 're-start' the rendering if youwant to experiment. If you introduce errors in the code you might have toreload the page to get a fresh, error-free version of the code.
/** * simple_model_01.js, By Wayne Brown, Spring 2016 *//** * The MIT License (MIT) * * Copyright (c) 2015 C. Wayne Brown * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the 'Software'), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */'use strict';//-------------------------------------------------------------------------/** * A simple triangle composed of 3 vertices. * @param vertices Array An array of 3 vertices. * @constructor */window.Triangle = function (vertices) { var self = this; self.vertices = vertices;};//-------------------------------------------------------------------------/** * A simple model composed of an array of triangles. * @param name String The name of the model. * @constructor */window.SimpleModel = function (name) { var self = this; self.name = name; self.triangles = [];};//-------------------------------------------------------------------------/** * Create a Simple_model of 4 triangles that forms a pyramid. * @return SimpleModel */window.CreatePyramid = function () { var vertices, triangle1, triangle2, triangle3, triangle4; // Vertex data vertices = [ [ 0.0, -0.25, -0.50], [ 0.0, 0.25, 0.00], [ 0.5, -0.25, 0.25], [-0.5, -0.25, 0.25] ]; // Create 4 triangles triangle1 = new Triangle([vertices[2], vertices[1], vertices[3]]); triangle2 = new Triangle([vertices[3], vertices[1], vertices[0]]); triangle3 = new Triangle([vertices[0], vertices[1], vertices[2]]); triangle4 = new Triangle([vertices[0], vertices[2], vertices[3]]); // Create a model that is composed of 4 triangles var model = new SimpleModel('simple'); model.triangles = [ triangle1, triangle2, triangle3, triangle4 ]; return model;};
./simple_pyramid/simple_pyramid.htmlA simple, manually defined 3D model. You can spin the model with your mouse.
 Please use a browser that supports 'canvas'
 Animate

Open this webgl program in a new tab or windowModelling And Simple Render SoftwareIn the following sequence of lessons we will use this simplemodel to do the following:
Render the pyramid using a single color for the entire model.
Render the pyramid using a different color for each face.
Render the pyramid using a different color for each vertex.
Render the pyramid using texture coordinates for each vertex.

Open this webgl program in a new tab or windowModelling And Simple Render SoftwareIn the following sequence of lessons we will use this simplemodel to do the following:
Render the pyramid using a single color for the entire model.
Render the pyramid using a different color for each face.
Render the pyramid using a different color for each vertex.
Render the pyramid using texture coordinates for each vertex.
What you will discover as you go through these various examples is that yourshader programs, buffer objects, and JavaScript rendering code isvery interdependent. As you change one of them, they all must change!
A Side Note about JavaScript Functions¶In order for the demo code to be editable in the web page, the functionshave to defined using a non-standard syntax that makes them changeable'after the fact'. Functions are added to the JavaScript environment whena web page is loaded. But the demo code needs to redefine them.This is tricky JavaScript stuff thatI would like to not explain, but you will be confused if it is notexplained, so here goes..
Global JavaScript scope is defined by a special object named window. If youwould like to examine this object, type window into the JavaScriptconsole pane in the Developer Tools and hit enter. You can then expand the object to see itsproperties by clicking on the right arrow in front of the object. (The globalenvironment has a lot of stuff in it!!!!)
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When you define a function you are creating an object. Objects can beassigned to a variable, passed as a parameter, or modified like any variable.When you create a function at global scope a new property of the windowobject is added using the name of the function as the property name. This newproperty is a reference to the new function object. However,JavaScript adds extra properties to the function object that makes the objectnon-modifiable. Let's look at an example:
You now have two new function objects and two new properties of thewindow object: window.example1 and window.example2.Both properties hold a reference to a function object. However, the objectshave been modified with secret properties that make the functions unchangeable.
Modelling And Simple Render DefinitionIf we define a property of the window object directly, no secretproperties are added to the function definition or the window property.Therefore, if we define a global function like this:
Modelling And Simple Render Calculatorno secret changes to the new property are performed and we can redefine thewindow.example3 property to anything we want, including a differentversion of the function code! Mario games online, free.