CmdRotate
From MCS Wiki AVR
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= <span class="f_Header">Example</span> = | = <span class="f_Header">Example</span> = | ||
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| + | <source lang="bascomavr"> | ||
| + | ' Pseudocode | ||
| + | |||
| + | ' To rotate the bitmap clockwise by 10 degrees with respect to the top left of the bitmap | ||
| + | Begin_G BITMAPS | ||
| + | CmdLoadIdentity | ||
| + | CmdRotate 10 * 65536 / 360 | ||
| + | CmdSetMatrix | ||
| + | Vertex2II 68, 28, 0, 0 | ||
| + | </source> [[File:Clip0046.png|center|Clip0046.png]] | ||
| + | |||
| + | <source lang="bascomavr"> | ||
| + | ' To rotate the bitmap counter clockwise by 33 degrees top left of the bitmap | ||
| + | Begin_G BITMAPS | ||
| + | CmdLoadIdentity | ||
| + | CmdRotate -33 * 65536 / 360 | ||
| + | CmdSetMatrix | ||
| + | Vertex2II 68, 28, 0, 0 | ||
| + | </source> | ||
| + | |||
| + | <source lang="bascomavr"> | ||
| + | ' Rotating a 64 x 64 bitmap around its center | ||
| + | Begin_G BITMAPS | ||
| + | CmdLoadIdentity | ||
| + | CmdTranslate 65536 * 32, 65536 * 32 | ||
| + | CmdRotate 90 * 65536 / 360 | ||
| + | CmdTranslate 65536 * -32, 65536 * -32 | ||
| + | CmdSetMatrix | ||
| + | Vertex2II 68, 28, 0, 0 | ||
| + | </source> [[File:Clip0047.png|center|Clip0047.png]] | ||
| + | |||
| + | {{Languages}} | ||
| + | |||
| + | [[Category:FT800 Commands]] | ||
Latest revision as of 18:43, 12 December 2014
Contents |
Action
Apply a rotation to the current matrix.
Syntax
CmdRotate a
Remarks
|
a |
Clockwise rotation angle, in units of 1/65536 of a circle |
Example
' Pseudocode ' To rotate the bitmap clockwise by 10 degrees with respect to the top left of the bitmap Begin_G BITMAPS CmdLoadIdentity CmdRotate 10 * 65536 / 360 CmdSetMatrix Vertex2II 68, 28, 0, 0
' To rotate the bitmap counter clockwise by 33 degrees top left of the bitmap Begin_G BITMAPS CmdLoadIdentity CmdRotate -33 * 65536 / 360 CmdSetMatrix Vertex2II 68, 28, 0, 0
' Rotating a 64 x 64 bitmap around its center Begin_G BITMAPS CmdLoadIdentity CmdTranslate 65536 * 32, 65536 * 32 CmdRotate 90 * 65536 / 360 CmdTranslate 65536 * -32, 65536 * -32 CmdSetMatrix Vertex2II 68, 28, 0, 0
| Languages | English |
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