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Notes for March 10 -- Building and demonstrating the Matrix class
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Completing the Matrix class
During class we implemented part of the Matrix class.
The code we wrote in class (slightly cleaned up),
is here.
You need to implement the methods that we didn't implement in class,
including
rotateX(),
rotateY(),
rotateZ()
and
scale(),
and optionally
perspective(),
as well as any helpful internal support methods, such as
_makeScale().
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Homework (due before class on Tuesday March 22)
- First, implement the other methods needed
to complete the
Matrix class.
- After you have done that,
create a cool scene to show your use of the
matrix object.
Remember that you can use both the
stroke()
and
fill()
methods,
as well as any of the other methods in the canvas context.
You should make use of both the this.cursor
and time variables,
so that your scene will be both interactive and animated.
Remember that after you have
transformed any 3D point in your model via:
matrix.transform(vec1, vec2);
you then need to do a viewport transform so that
you will know at which pixel to draw that point on your canvas:
vec2.viewportTransform(canvas.width, canvas.height, pixelVec);
Try to have fun with this assignment. Make something
crazy and exciting, or beautiful and moving,
or funny, or personal.
Surprise me. :-)
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