Delete obsolete text in solvespace/doc/..., superseded by the

stuff on the website.

[git-p4: depot-paths = "//depot/solvespace/": change = 2212]

doc/rep.txt

@@ -1,59 +0,0 @@
-
-The user enters requests. A request might be a line segment, or a plane,
-or to step and repeat a group of entities, or anything else. Each
-request has a groupid associated with it; a group will contain one or
-more requests. The request will generate entities, and possibly equations.
-
-Special requests would include an include, which gives us a concept of
-hierarchy. An include pulls in all the entities from another SolveSpace
-part, and fixes them up to a rotation and translation; so that introduces
-six free variables. This means that the part is rigidly constrained,
-but that it still must be placed, and that entities within the included
-part are available to constrain against.
-
-An entity is some geometric thing in the sketch. This might be a
-line segment, or a datum point, or something else. Some requests
-correspond to a single entity, in a straightforward way. Other requests
-generate multiple entities, in some relationship (that is constrained
-automatically, through the generated equations) to other parts of the
-sketch. Each entity has a groupid, which is inherited from the request
-that generated it.
-
-One important entity is a pwl. That's a piecewise linear segment. Its
-endpoints are fixed, so it generates no parameters.
-
-The entity is described in terms of paramgroups. A paramgroup corresponds
-to one or more solver parameters, grouped in such a way as to have
-geometric meaning. For example, a point would correspond to three params,
-x, y, and z.
-
-The paramgroups break down in to params. These are the unknowns in the
-solver equations.
-
-The user enters constraints. Each constraint has groupid. The constraints
-generate equations too.
-
-
-
-
-The items that generate unknowns are:
-
-    POINT:
-
-        three unknowns, (x, y, z)
-
-
-Entities are:
-
-    DATUM POINT:
-
-        one point
-
-    DATUM PLANE:
-
-        one point; the plane is through that point, and normal to the
-        vector from that point to the origin
-
-    LINE SEGMENT:
-
-        two endpoints

doc/tutorial.txt

@@ -1,65 +0,0 @@
-
-In mechanical drawing, it's common to use a parallel projection of a
-3d model into a 2d drawing. A parallel projection is also known as an
-axonometric projection; orthographic, isometric, dimetric, and trimetric
-projections are examples of such a projection. In a parallel projection,
-any two lines that are parallel in real life must also appear parallel
-on the drawing.
-
-This differs from a perspective projection. In a perspective projection,
-objects that are closer to the "camera" appear larger than objects
-that are farther away. This means that some lines that are parallel in
-real life will not be parallel on the drawing; they will converge at a
-vanishing point. This may cause confusion.
-
-By default, NTsolver displays a parallel projection of the model. To
-display a perspective projection, choose #LINK(configuration) in the text
-window, and set the perspective factor to something other than zero.
-The distance from the "camera" to the model is equal to one thousand
-pixels divided by the perspective factor.
-
-
-
-The user interface consists of two windows: a large graphics window that
-displays the model being drawn, and a smaller text window, that displays
-information about the model.
-
-After starting a new file, the model is empty except for the three
-coordinate planes. The graphics window's view is aligned so that the XY
-plane is parallel to the plane of your monitor.
-
-NTsolver requires a mouse with a scrollwheel or center button. To pan
-the view to the left or right, center-drag the mouse. To rotate the view
-around the horizontal or vertical axes of the screen, shift-center-drag
-the mouse. To rotate the view around the axis perpendicular to the screen,
-control-center-drag the mouse.
-
-After moving the view, it's possible to orient the view back on to the
-active workplane. Choose #MENU(Sketch -> Draw in Workplane), or press
-#KEY(W). This produces an orthographic projection of the model. When
-drawing lines and curves in a workplane, it's convenient to work with
-the view oriented on to that workplane.
-
-To zoom in, rotate the mouse wheel, or choose #MENU(View -> Zoom In /
-Out). This will not have any visible effect until a model has been
-drawn, though, since the coordinate planes are automatically scaled to
-fit on-screen.
-
-The text window works like a web browser; any underlined text is a link,
-which may be activated by clicking on it. At the top of the text window,
-two rows of links will show and hide different features of the sketch
-(workplanes, normals, points, constraints, shaded, faces, mesh, hidden
-lines).
-
-Below that, the text window displays a list of groups. A group is a set of
-entities, like lines, circles, or planes. In a new file, two groups exist:
-the references, and a drawing group. The references are the coordinate
-planes (XY, YZ, and ZX); they provide the initial geometric entities to
-constrain against. The drawing group is active; if you draw a line, or
-a rectangle, or some other new geometry, then that geometry will appear
-in the active drawing group.
-
-
-
-
-To start, we