Macro Triangle AH/fr

Description

Cette macro crée un triangle isocèle en donnant comme argument , l'angle de tête et la hauteur du triangle. La tête du triangle est positionnée aux coordonnées XYZ 0,0,0.

Utilisation

Copiez la macro Triangle AH complète dans la console Python de FreeCAD

Script

Icône de la barre d'outils

Macro_triangleAH.FCMacro

__title__   = "triangleAH"
__author__  = "Mario52"
__version__ = "00.03"
__date__    = "2019/07/02"
# Give angle and on choice : height or base or hypo
from math import cos, sin, tan, degrees, radians, sqrt
import Draft, Part
def triangleAH(angle, height=0.0, base=0.0, hypo=0.0):
    def line_length(x1 = 0.0, y1 = 0.0, z1 = 0.0, length = 10.0, angle2 = 0.0):  # search coordinates
        x2 = x1 + (length * cos(radians(angle2)))
        y2 = y1 + (length * sin(radians(angle2)))
        z2 = z1 #+ ()
        return x2,y2,z2                                                          # return coordinates (xyz) to point
 
    x0 = y0 = z0 = 0.0
    angle = float(angle)
    height = float(height)
    base = float(base)
    if base != 0:
        height = ( (base/2) / (tan(radians(angle/2))) )                          # imposing base and calculate height
    if hypo != 0:
        height = hypo * (cos(radians(angle/2)))                                  # imposing hypo and calculate height 
    else:
        hypo = height / cos(radians(angle/2))                                    # calculate hypotenuse
    if base==0:                                                                  # base of triangle
        base = (tan(radians(angle/2) ) * height) * 2                             # calculate base
    a0 = line_length(x1=x0,y1=y0,z1=z0,length=height,angle2=0 )                  # coord height of triangle
    a0 = line_length(x1=x0,y1=y0,z1=z0,length=0, angle2 = angle )                # point 0 (begin vertex)
    a  = line_length(x1=a0[0],y1=a0[1],z1=a0[2],length= hypo, angle2=-(angle/2)) #
    b  = line_length(a[0],a[1],a[2],length= (abs(a[1])*2), angle2=90.0)          # base of triangle = (abs(a[1])*2)
    ##
    print()
    print("angle theet : ", angle)
    print("angles base : (", (180.0-angle)/2.0,"),(",(180-angle)/2.0,")")
    print("height      : ", height)
    print("base        : ", base)
    print("hypotenuse  : ", hypo)
    print("surface     : ", (base * height) / 2.0)
    print("_________________________")
    Draft.makeWire([FreeCAD.Vector(a0),FreeCAD.Vector(a),FreeCAD.Vector(b)],closed=True,face=True,support=None) # create triangle
    App.ActiveDocument.recompute()

#Example
#triangleAH(angle=90, height=10)
#triangleAH(90, 10)
#triangleAH(45, hypo=10)

Exemples

triangleAH(angle=90, height=10)
# or
triangleAH(90, 10)
# or
triangleAH(45, hypo=10)
# or
triangleAH(90, base=10)

Versions

ver 00.03 2019/07/02 ajout "App.ActiveDocument.recompute()" et convert Py3

ver 00.02 03/05/2015 : ajout "base=0.0", "hypo=0.0" affichage des données du triangle

ver 00.01 20/03/2015 :