Changes:
Text rendering in OCCT 3D view can now display multi-line text correctly. In addition to '\n' and '\r' characters, '\t' is also treated specially, i.e. replaced by a fixed number of spaces. Other control characters (like '\b' or '\a') are simply ignored by text rendering code.
Also standard GL2PS's alignment isn't used because it's doesn't works correctly for all formats, therefore alignment is calculated manually now.
Changes:
There are following changes in packages:
OpenGl package:
1) The method that sets the line attributes in layer mode
call_togl_set_line_attributes has been modified. Now it doesn't depends
on static flag variables, instead of it method tries to acquire the
current OpenGl attribute flags.
2) The layer begin/end methods call_togl_begin_layer2d / call_togl_end_layer2d
has been modified to keep the OpenGl attribute flags unchanged.
3) The maximum count of predefined line styles for OpenGl driver has been
defined as TEL_LS_MAX in InterfaceGraphic.hxx, this value is used during
the line style list creation in TsmInitAttributes.
InterfaceGraphic package:
1) The maximum count of default line styles has been defined as TEL_LS_MAX
in InterfaceGraphic.hxx
ViewerTest package:
1) DRAW command "vlayerline" has been added to test linewidth, linetype and
transparency of the Visual3d_Layer class.
The command draws a line and has the following arguments:
>> vlayerline x1 y1 x2 y2 [linewidth=0.5] [linetype=0] [transparency=1.0]
Linewidth in pixels, Transparency in range [0.0-1.0].
Extend OpenGl_Context to provide GL2.0 core functionality
Added 'glext.h' header provided by Khronos group with definitions
and GL functions' types.
Added OpenGl_GlCoreXX structures with function list
to appropriate GL core functionality.
Fixed memory leak in OpenGl_Context destructor.
Eliminate inclusions of gl.h header
Use OpenGl_GlCore11.hxx instead.
Removed obsolote M_PI redefinitions.
Slightly cleaned up included headers.
Reuse definitions from glext.h
OpenGl_ArbVBO and OpenGl_ExtFBO originally provide own definitions
for OpenGL extensions.
