The lower left corner not the pixel of the texture is at 0 0 the upper right corner is at 1 1.
Glvertex2f gltexcoord2f rubber sheet.
Xii 3 representations of orientations xii 4 kinematics.
The second value of gltexcoord2f is the y coordinate.
Gl glvertex2f 0 0f destpoint x 0 0f destpoint y.
0 5f is the middle of the texture and 1 0f is the top of the texture.
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1 evaluates conditional expressions 3dborder 3 draw borders with three dimensional appearance a2ps 1 format files for printing on a postscript printer a64l 3 conver.
Lection on 2d graphics in openframeworks drawing images transparency offscreen buffer.
0 0f is the bottom of the texture.
A b c d e f g h i j k l m n o p q r s t u v w x y z pm get page info mld to node 3 retrieve placement information daemonize 3.
The first value of gltexcoord2f is the x coordinate.
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Lections on openframeworks and interactive multimedia.
When drawing a triangle to the screen the exact position on screen doesn t matter the texture rubber sheet is cut out according to the texture coordinates and stretched onto the triangle as specified by the texture coordinates.
Preliminaries vectors and vector products.
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Imagine that sheet of paper was made of rubber so that you could stretch it.
Multiple sheets of paper placed on a desk with projected graphics figure 2 16.
Sheets can be augmented with literal functionality or magical functionality.
A bitmap of each sheet is extracted from the camera image thresholded and used to identify the sheet without the use of glyphs by comparing it to the appearance of known sheets.
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Get a second piece of transparent paper and try to align them so.
A 1 a 2 a 3 a 4.
0 5f is the middle of the texture and 1 0f is the right side of the texture.
0 0f is the left side of the texture.
Think textures as being rubber sheets.
