_12_tet Namespace Reference

Draws a 3D tetrahedron and allows a user to rotate it (mouse left button and wheel). More...

Functions
def	createZeroMat (m, n)
def	matMul (mat1, mat2)
def	matTrans (mat)
def	translate (x, y, dx, dy)
def	drawTet (tet, col)
def	init ()
def	cbClicked (event)
def	cbMottion (event)
def	wheelUp (event)
def	wheelDown (event)
def	wheel (event)
def	resize (event)
def	main ()

Detailed Description

Draws a 3D tetrahedron and allows a user to rotate it (mouse left button and wheel).

The Tetrahedron is represented by a 3 x 4 matrix. Each column represents a 3D vertex.

note: a m x n matrix is represented by a list of lines: [[l_1] [l_2] .. [l_m]]. m = len(mat), n = len(mat[0]), mat(i,j) = mat[i][j]

Author

Paulo Roma

Since

01/05/2014

See also

http://www.orimosenzon.com/wiki/index.php/Python_samples

http://mathworld.wolfram.com/RotationMatrix.html

https://code.activestate.com/recipes/578876-rotatable-tetrahedron/

Function Documentation

cbClicked()

def _12_tet.cbClicked

(

event

)

Save current mouse position.

Referenced by cbMottion().

cbMottion()

def _12_tet.cbMottion

(

event

)

Map mouse displacements in Y direction to rotations about X axis,
   and mouse displacements in X direction to rotations about Y axis.

References cbClicked(), drawTet(), _12a_poly.EPS(), matMul(), _12a_poly.ROT_X(), and _12a_poly.ROT_Y().

createZeroMat()

def _12_tet.createZeroMat	(		m,
			n
	)

Return a matrix (m x n) filled with zeros.

Referenced by matMul(), and matTrans().

drawTet()

def _12_tet.drawTet	(		tet,
			col
	)

Draw a tetrahedron.

References translate().

Referenced by cbMottion(), main(), resize(), wheel(), wheelDown(), and wheelUp().

init()

def _12_tet.init

(

)

Initialize global variables.

References _12a_poly.EPS(), _12a_poly.eps(), matTrans(), _12a_poly.ROT_X(), _12a_poly.ROT_Y(), and _12a_poly.ROT_Z().

Referenced by main().

main()

def _12_tet.main

(

)

References drawTet(), and init().

matMul()

def _12_tet.matMul	(		mat1,
			mat2
	)

Return mat1 x mat2 (mat1 multiplied by mat2).

References createZeroMat().

Referenced by cbMottion(), wheel(), wheelDown(), and wheelUp().

matTrans()

def _12_tet.matTrans

(

mat

)

Return mat (n x m) transposed (m x n).

References createZeroMat().

Referenced by init().

resize()

def _12_tet.resize

(

event

)

Redraw the tetrahedron, in case of a window change due to user resizing it.

References drawTet().

translate()

def _12_tet.translate	(		x,
			y,
			dx,
			dy
	)

Translate vector(x,y) by (dx,dy).

Referenced by drawTet().

wheel()

def _12_tet.wheel

(

event

)

Map mouse wheel displacements to rotations about Z axis.

References drawTet(), _12a_poly.EPS(), matMul(), and _12a_poly.ROT_Z().

wheelDown()

def _12_tet.wheelDown

(

event

)

Map mouse wheel down displacements to rotations about Z axis.

References drawTet(), _12a_poly.EPS(), matMul(), and _12a_poly.ROT_Z().

wheelUp()

def _12_tet.wheelUp

(

event

)

Map mouse wheel up displacements to rotations about Z axis.

References drawTet(), _12a_poly.EPS(), matMul(), and _12a_poly.ROT_Z().