jit.gl.cornerpin
Map textures in a window
Description
Provides controls for mapping textures and matrices to an output window by repositioning the image corners. Mouse input is received from the context window allowing for easy manipulation of corner positions.
Discussion
This object requires one argument: the name of a drawing context. A named drawing context is a named instance of a jit.window, jit.pwindow, or jit.matrix object that has an instance of the jit.gl.render object associated with it. Additionally it can reference the name of a jit.gl.node sub-context. This value may also be set via the OB3D drawto attribute. If no argument is present, the object is implicitly added to the first valid drawing context or sub-context found in the current patch or by searching up the patcher hierarchy.
Attributes
colormode[symbol]
Matrix color mode
Possible values:
'argb'
'uyvy'
corner_color[4 floats]
Set the corner gui color, used when drawcorners is enabled (default = 1 1 1 1).
corner_radius[int]
Pixel size of corner GUI (default = 10)
cornermode[symbol]
Mode to determine how corner attributes are used to set corner position (default = relative)
Possible values:
'relative'
(
Normalized coords relative to window size
)
'absolute'
(
Absolute window coordinates
)
'absolute_texture'
(
Absolute coordinates based on texture dimensions
)
displaylist[int]
Geometry displaylist flag (default = 1)
drawcorners[int]
Corner GUI mode (default = 1 - on). Determines if and how the cornerpin GUI is visible.
Possible values:
0 = 'off'
1 = 'on'
2 = 'on_hover'
(
Visible when mouse hovers over cornerpin quad
)
3 = 'on_click'
(
Visible when mouse clicks on cornerpin quad
)
enable_mouse[int]
Mouse interaction flag (default = 1)
hover[int]
Enable/disable mouse hovering (default = 0), when drawcorners mode is 3 (on_hover) or mousereport is enabled.
interp[int]
Enable interpolation of input image (default = 1)
invert_corners[int]
Invert source and destination corner position values (default = 0). This allows for deskewing an image, without dragging beyond the window bounds.
lower_left[2 floats]
Lower left corner position (default = 0 1)
lower_right[2 floats]
Lower right corner position (default = 1 1)
mousereport[int]
Enable/disable mouse reporting out first outlet (default = 0). The report indicates clicking, dragging, and hovering (if hover enabled) over the cornerpin quad.
preserve_aspect[int]
Preserve aspect ratio flag of input image (default = 0)
rect_tex[int]
Enable rectangular textures (default = 1)
texturename[symbol]
Internal texture name
ui_priority[int]
UI priority value (default = -900). When multiple UI objects are listening to the same window, ui_priority determines the order objects receive input. Lower values test first.
upper_left[2 floats]
Upper left corner position (default = 0 0)
upper_right[2 floats]
Upper right corner position (default = 1 0)
OB3D Attributes
anim[symbol]
The name of a jit.anim.node object that handles all spatial transforms for this instance (default = UID). The default value references an internal object, but can be overridden by setting to the name of an existing external jit.anim.node instance. This allows for more advanced control of the spatial transform.
anchor[3 floats]
The anchor position in local space (default = 0. 0. 0.). Allows for offsetting the local 3D origin around which transforms are applied.
animmode[symbol]
Determines which space the anim_move and anim_turn messages will affect the position and orientation of this object (default = parent).
local = Rotate relative to local axis
parent = Rotate relative to parent axis
world = Rotate relative to world axis
automatic[int]
Automatic rendering flag (default = 1) When the flag is set, rendering occurs when the associated jit.gl.render object receives a bang message
aux_color[4 floats]
The auxiliary color in the form red green blue alpha (default = 0. 0. 0. 0.) The list elements should be in the range 0.-1.
axes[int]
x/y/z axis rendering off/on (default = 0)
blend[symbol]
The named blending mode. The possible values are:
add = blend_mode 1 1
multiply = blend_mode 2 1
screen = blend_mode 4 1
exclusion = blend_mode 4 5
colorblend = blend_mode 3 4
alphablend = blend_mode 6 7
coloradd = blend_mode 3 1
alphaadd = blend_mode 6 1
blend_enable[int]
Blending flag (default = 0) When the flag is set, blending is enabled for all rendered objects.
blend_mode[2 ints]
The source and destination planes associated with the blend mode (default = 6 7) Blend modes are specified in the form src_blend_mode dst_blend_mode. The supported modes are:
0 = zero
1 = one
2 = destination color
3 = source color
4 = one minus destination color
5 = one minus source color
6 = source alpha
7 = one minus source alpha
8 = destination alpha
9 = one minus destination alpha
10 = source alpha saturate
capture[symbol]
The name of a texture to be rendered to - e.g. jit.gl.nurbs @capture mytex will capture to jit.gl.texture @name mytex .
cull_face[int]
Face culling mode (default = 0 (no culling))
0 = no culling
1 = cull back faces
2 = cull front faces
drawto[symbol]
The named drawing context in which to draw (default = none) A named drawing context is a named instance of a jit.window, jit.pwindow, or jit.matrix object that has an instance of the jit.gl.render object associated with it.
enable[int]
Enable flag (default = 1) When the flag is set, drawing is enabled.
filterclass[symbol]
The name of this object's pick filter class (default = default). This controls the visibility of objects to the jit.gl.handle and jit.gl.picker objects. In order to select this object, the filterclass value must be in the picking object's filters list.
layer[int]
Object layer number (default = 0) When in automatic mode, the layer number determines the rendering order (low to high). Objects in the same layer have no guarantee which will be rendered first.
line_width[float]
The drawing line width (default = 1.)
name[symbol]
The instance name (default = UID)
point_mode[symbol]
Point drawing mode to use when points drawing primitive (poly_mode 2) is enabled (default = circle).
Possible values:
'square'
(
Draw point as square
)
'circle'
(
Draw point as circle
)
'square_depth'
(
Draw point as square with depth scaling
)
'circle_depth'
(
Draw point as circle with depth scaling
)
'user_shader'
(
Allow writing to gl_PointSize in custom vertex shader
)
point_size[float]
The draw point size (default = 1.)
poly_mode[2 ints]
Polygon rendering modes (default 0 0) Rendering modes are expressed in the form frontface backface. Supported rendering modes are:
0 = render as filled polygons
1 = render as lines
2 = render as points
position[3 floats]
The 3D origin in the form x y z (default = 0. 0. 0.)
smooth_shading[int]
Smooth shading flag (default = 0) When the flag is set, smooth shading is used when rendering.
tex_map[int]
Mode for automatic generation of texture coordinate controls (default = 0)
0 = no coordinates are generated.
1 = OpenGL's texture generation is used with mode GL_OBJECT_LINEAR. This applies the texture in a fixed orientation relative to the object.
2 = OpenGL's texture generation is used with mode GL_SPHERE_MAP. This can be used to create a reflection effect.
3 = OpenGL's texture generation is used with mode GL_EYE_LINEAR. This applies the texture in a fixed orientation relative to OpenGL's eye coordinates.
Modes 1 and 3 are affected by the value of the tex_plane_s and tex_plane_t attributes listed below.
tex_plane_s[4 floats]
The texture generation coefficients a b c d that apply to tex_map modes 1 and 3. (default = 1. 0. 0. 0.)
The four coefficients define a plane used to generate the s texture coordinate, which corresponds to the x axis of the texture image. If the tex_map mode is 1, s = ax + by + cz + dw, where x, y, z, and w are the homogeneous coordinates of the vertex.
tex_plane_t[4 floats]
The texture generation coefficients a b c d, which apply to tex_map modes 1 and 3. (default = 0. 1. 0. 0)
The four coefficients define a plane which is used to generate the t texture coordinate, which corresponds to the y axis of the texture image.
texture[8 symbols]
The name of the texture to be applied (default = none). If multiple textures are specified, uses multi-texturing.
Common Box Attributes
annotation[symbol]
Sets the text that will be displayed in the Clue window when the user moves the mouse over the object.
background[int]: 0
Adds or removes the object from the patcher's background layer. background 1 adds the object to the background layer, background 0 removes it. Objects in the background layer are shown behind all objects in the default foreground layer.
color[4 floats]
Sets the color for the object box outline.
fontface[int]
Sets the type style used by the object. The options are:
plain
bold
italic
bold italic
Possible values:
0 = 'regular'
1 = 'bold'
2 = 'italic'
3 = 'bold italic'
fontname[symbol]
Sets the object's font.
fontsize[float]
Sets the object's font size (in points).
Possible values:
'8'
'9'
'10'
'11'
'12'
'13'
'14'
'16'
'18'
'20'
'24'
'30'
'36'
'48'
'64'
'72'
hint[symbol]
Sets the text that will be displayed in as a pop-up hint when the user moves the mouse over the object in a locked patcher.
ignoreclick[int]: 0
Toggles whether an object ignores mouse clicks in a locked patcher.
jspainterfile[symbol]
JS Painter File
patching_rect[4 floats]: 0. 0. 100. 0.
Sets the position and size of the object in the patcher window.
position[2 floats]
write-only
Sets the object's x and y position in both patching and presentation modes (if the object belongs to its patcher's presentation), leaving its size unchanged.
presentation[int]: 0
Sets whether an object belongs to the patcher's presentation.
presentation_rect[4 floats]: 0. 0. 0. 0.
Sets the x and y position and width and height of the object in the patcher's presentation, leaving its patching position unchanged.
rect[4 floats]
write-only
Sets the x and y position and width and height of the object in both patching and presentation modes (if the object belongs to its patcher's presentation).
size[2 floats]
write-only
Sets the object's width and height in both patching and presentation modes (if the object belongs to its patcher's presentation), leaving its position unchanged.
textcolor[4 floats]
Sets the color for the object's text in RGBA format.
textjustification[int]
Sets the justification for the object's text.
Possible values:
0 = 'left'
1 = 'center'
2 = 'right'
varname[symbol]
Sets the patcher's scripting name, which can be used to address the object by name in pattr, scripting messages to thispatcher, and the js object.
Messages
reset
Reset corner position attributes
sendtexture
Send the output texture a message
- name
[symbol]
- message
[symbol]
- values
[list]
OB3D Messages
bang
Equivalent to the draw message.
draw
Draws the object in the named drawing destination. If the matrixoutput attribute is supported and set to 1, the geometry matrices are sent out the object's left outlet.
drawraw
Equivalent to draw with the inherit_all attribute set to 1.
drawimmediate
Equivalent to draw but ignoring any potential renderer setup
anim_move
Move the object along the axis provided, relative to the space indicated by animmode.
- x
[float]
- y
[float]
- z
[float]
anim_turn
Rotate the object along each axis by the amount provided, relative to the space indicated by animmode.
- x
[float]
- y
[float]
- z
[float]
anim_grow
Scale the object along each axis by the amount provided.
- x
[float]
- y
[float]
- z
[float]
anim_reset
Reset the local transformation attributes to their default values (position = 0 0 0, rotatexyz = 0 0 0, and scale = 1 1 1)
update_node
Update the node transformation attributes.
jit_gl_texture
Binds the texture specified by texture-name to this object. Equivalent to setting the texture attribute to texture-name .
- texture-name
[symbol]
See Also
| Name | Description |
|---|---|
| jit.gl.render | Render Jitter OpenGL objects |
| jit.gl.videoplane | Display video in OpenGL |
| jit.gl.texture | Create OpenGL textures |
| jit.gl.slab | Process texture data |
| jit.gl.skybox | Render a skybox in OpenGL |