CmdScale
From MCS Wiki AVR
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= <span class="f_Header">Example</span> = | = <span class="f_Header">Example</span> = | ||
| + | |||
| + | <source lang="bascomavr"> | ||
| + | ' Pseudocode | ||
| + | |||
| + | ' To zoom a bitmap 2X | ||
| + | Begin_G BITMAPS | ||
| + | CmdLoadIdentity | ||
| + | CmdScale 2 * 65536, 2 * 65536 | ||
| + | CmdSetMatrix | ||
| + | Vertex2II 68, 28, 0, 0 | ||
| + | </source> [[File:Clip0048.png|center|Clip0048.png]] <source lang="bascomavr"> | ||
| + | ' To zoom a bitmap 2X around its center | ||
| + | Begin_G BITMAPS | ||
| + | CmdLoadIdentity | ||
| + | CmdTranslate 65536 * 32, 65536 * 32 | ||
| + | CmdScale 2 * 65536, 2 * 65536 | ||
| + | CmdTranslate 65536 * -32, 65536 * -32 | ||
| + | CmdSetMatrix | ||
| + | Vertex2II 68, 28, 0, 0 | ||
| + | </source> [[File:Clip0049.png|center|Clip0049.png]] | ||
| + | |||
| + | <br/>{{Languages}} | ||
| + | |||
| + | [[Category:FT800 Commands]] | ||
Latest revision as of 19:47, 12 December 2014
Contents |
Action
Apply a scale to the current matrix.
Syntax
CmdScale sx, sy
Remarks
|
sx |
x scale factor, in signed 16. 16 bit fixed-point form |
|
sy |
y scale factor, in signed 16. 16 bit fixed-point form |
Example
' Pseudocode ' To zoom a bitmap 2X Begin_G BITMAPS CmdLoadIdentity CmdScale 2 * 65536, 2 * 65536 CmdSetMatrix Vertex2II 68, 28, 0, 0
' To zoom a bitmap 2X around its center Begin_G BITMAPS CmdLoadIdentity CmdTranslate 65536 * 32, 65536 * 32 CmdScale 2 * 65536, 2 * 65536 CmdTranslate 65536 * -32, 65536 * -32 CmdSetMatrix
Vertex2II 68, 28, 0, 0
| Languages | English |
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