[LinuxCNC/linuxcnc Issue#178] Incorrect axis display in back tool lathe case About GRBL HAL

Issue #178 | 状态: 已关闭 | 作者: propcoder | 创建时间: 2016-10-12

标签: enhancement pull-request-welcome

Here are the steps I follow to reproduce the issue:

1. Take sample config Sim Axis Lathe.
2. Try to change the config to reverse X axis in display (extents, toolpath, liveplot, tool shape preview) and in keyboard key mapping. What I tried is parameters in INI [DISPLAY] section:

LATHE = 1
GEOMETRY = -XZ
JOG_AXES = ZX
JOG_INVERT = X

and / or .axisrc changes as described in this wiki page, probably for versions 2.7 and earlier:
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?BackToolLathe

This is what I expected to happen:

Correctly reversed X axis as mentioned above.

This is what happened instead:

In LinuxCNC 2.7.7 wiki method helps except it does not display tool shape at all.
In LinuxCNC/AXIS version 2.8.0-pre1-2648-gd1919c5 only part of objects mentioned are reversed correctly.

#1 – rene-dev 于 2017-07-13

I got it working, by forcing axis into y2 view, and disable the x invert.
the remaining issue is the tool preview, which does not work in y2 mode.
also, the grid does not seem to work in y2.
but I could not find where the preview is generated, can anyone point me in the right direction?
I also propose a change to the ini file:
use BACKTOOLLATHE = 1 like gmoccapy for back tool lathes.
I also send this to emc-devel, but it did not seem to have worked…

Rene

#2 – MZot 于 2020-06-06

I am not sure that this is the right place to post this, but I have a fix for tool shape preview in Y2 view. Can someone please test.
in glcanon.py:

“def lathetool(self, current_tool): glDepthFunc(GL_ALWAYS) diameter, frontangle, backangle, orientation = current_tool[-4:] w = 3/8.


        radius = self.tointernallinear_unit(diameter) / 2.

        glColor3f(*self.colors['lathetool'])

        glBegin(GL_LINES)

        glVertex3f(-radius/2.0,0.0,0.0)

        glVertex3f(radius/2.0,0.0,0.0)

        glVertex3f(0.0,0.0,-radius/2.0)

        glVertex3f(0.0,0.0,radius/2.0)

        glEnd()
        glNormal3f(0,1,0)
        if orientation == 9:

            glBegin(GLTRIANGLEFAN)

            for i in range(37):

                t = i * math.pi / 18

                glVertex3f(radius  math.cos(t), 0.0, radius  math.sin(t))

            glEnd()

        else:

            dx, dy = self.lathe_shapes[orientation]
            min_angle = min(backangle, frontangle) * math.pi / 180

            max_angle = max(backangle, frontangle) * math.pi / 180
            sinmax = math.sin(max_angle)

            cosmax = math.cos(max_angle)

            tanmax = math.cos(max_angle)

            sinmin = math.sin(min_angle)

            cosmin = math.cos(min_angle)

            tanmin = math.cos(min_angle)
            circleminangle = - math.pi/2 + min_angle

            circlemaxangle = - 3*math.pi/2 + max_angle

            d0 = 0
            x1 = (w - d0)
            sz = max(w, 3*radius)
            glBegin(GLTRIANGLEFAN)

            glVertex3f(

                radius  dx + radius  math.sin(circleminangle) + sz * sinmin,

                0,

                radius  dy + radius  math.cos(circleminangle) + sz * cosmin)

            for i in range(37):

                #t = circleminangle + i * (circlemaxangle - circleminangle)/36.

                t = circleminangle + i * (circlemaxangle - circleminangle)/36.

                glVertex3f(radiusdx + radius  math.sin(t), 0.0, radiusdy + radius  math.cos(t))
            glVertex3f(

                radius  dx + radius  math.sin(circlemaxangle) + sz * sinmax,

                0,

                radius  dy + radius  math.cos(circlemaxangle) + sz * cosmax)
            glEnd()

            glBegin(GLTRIANGLEFAN)  #y2 triangle, BACKTOOLLATHE

            glVertex3f(

                radius  dx + radius  math.sin(circlemaxangle) + sz * sinmax,

                0,

                radius  dy + radius  math.cos(circlemaxangle) + sz * cosmax)

            for i in range(37):

                t = circlemaxangle - i * (circlemaxangle - circleminangle)/36.

                glVertex3f(radiusdx + radius  math.sin(t), 0.0, radiusdy + radius  math.cos(t))

            glVertex3f(

                radius  dx + radius  math.sin(circleminangle) + sz * sinmin,

                0,

                radius  dy + radius  math.cos(circleminangle) + sz * cosmin)

glEnd() glDepthFunc(GL_LESS)“

#3 – rene-dev 于 2020-06-07

This has been fixed a long time ago, can you explain what the problem is?

#4 – MZot 于 2020-06-07

version 2.7.15, gmoccapy, gremlin preview. Tool is not visible with BACKTOOLLATHE = 1.
It really looks like it is fixed in master. Why was it never pushed to 2.7?

原始Issue: https://github.com/LinuxCNC/linuxcnc/issues/178

Here are the steps I follow to reproduce the issue:

This is what I expected to happen:

This is what happened instead:

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