/******************************Module*Header*******************************\ * Module Name: lines.h * * Line drawing constants and structures. * * Copyright (c) 1992-1995 Microsoft Corporation \**************************************************************************/ // This is the default QVision line command for drawing integer lines. // // The line command register is sticky, meaning that the settings for // the current line will affect any future point-to-point lines, so // we want to always keep our preferred values for doing integer // point-to-point lines: #define DEFAULT_LINE_CMD (USE_AXIAL_WHEN_ZERO | \ RETAIN_PATTERN_PTR | \ NO_KEEP_X0_Y0 | \ CALC_ONLY | \ START_LINE) typedef struct _PDEV PDEV; // Handy forward declaration typedef LONG STYLEPOS; #define STYLE_MAX_COUNT 16 #define STYLE_MAX_VALUE 0x3fffL #define RUN_MAX 20 #define STRIP_MAX 100 #define STYLE_DENSITY 3 // Flip and round flags: #define FL_H_ROUND_DOWN 0x00000080L // .... .... 1... .... #define FL_V_ROUND_DOWN 0x00008000L // 1... .... .... .... #define FL_FLIP_D 0x00000005L // .... .... .... .1.1 #define FL_FLIP_V 0x00000008L // .... .... .... 1... #define FL_FLIP_SLOPE_ONE 0x00000010L // .... .... ...1 .... #define FL_FLIP_HALF 0x00000002L // .... .... .... ..1. #define FL_FLIP_H 0x00000200L // .... ..1. .... .... #define FL_ROUND_MASK 0x0000001CL // .... .... ...1 11.. #define FL_ROUND_SHIFT 2 #define FL_RECTLCLIP_MASK 0x0000000CL // .... .... .... 11.. #define FL_RECTLCLIP_SHIFT 2 #define FL_STRIP_MASK 0x00000003L // .... .... .... ..11 #define FL_STRIP_SHIFT 0 #define FL_SIMPLE_CLIP 0x00000020 // .... .... ..1. .... #define FL_COMPLEX_CLIP 0x00000040 // .... .... .1.. .... #define FL_CLIP (FL_SIMPLE_CLIP | FL_COMPLEX_CLIP) #define FL_STYLED 0x00000400L // .... .1.. .... .... #define FL_ALTERNATESTYLED 0x00001000L // ...1 .... .... .... #define FL_STYLE_MASK 0x00000400L #define FL_STYLE_SHIFT 10 #define FL_LAST_PEL_INCLUSIVE 0x00002000L // ..1. .... .... .... // Miscellaneous DDA defines: #define LROUND(x, flRoundDown) (((x) + F/2 - ((flRoundDown) > 0)) >> 4) #define F 16 #define FLOG2 4 #define LFLOOR(x) ((x) >> 4) #define FXFRAC(x) ((x) & (F - 1)) //////////////////////////////////////////////////////////////////////////// // NOTE: The following structures must exactly match those declared in // lines.inc! typedef struct _STRIP { LONG cStrips; // # of strips in array LONG flFlips; // Indicates if line goes up or down POINTL ptlStart; // first point LONG alStrips[STRIP_MAX]; // Array of strips } STRIP; typedef struct _LINESTATE { STYLEPOS* pspStart; // Pointer to start of style array STYLEPOS* pspEnd; // Pointer to end of style array STYLEPOS* psp; // Pointer to current style entry STYLEPOS spRemaining; // To go in current style STYLEPOS spTotal; // Sum of style array STYLEPOS spTotal2; // Twice sum of style array STYLEPOS spNext; // Style state at start of next line STYLEPOS spComplex; // Style state at start of complex clip line STYLEPOS* aspRtoL; // Style array in right-to-left order STYLEPOS* aspLtoR; // Style array in left-to-right order ULONG ulStyleMask; // Are we working on a gap in the style? // 0xff if yes, 0x0 if not ULONG xyDensity; // Density of style ULONG cStyle; // Size of style array ULONG ulStyleMaskLtoR;// Original style mask, left-to-right order ULONG ulStyleMaskRtoL;// Original style mask, right-to-left order BOOL ulStartMask; // Determines if first element in style // array is for a gap or a dash } LINESTATE; /* ls */ // Strip drawer prototype: typedef VOID (*PFNSTRIP)(PDEV*, STRIP*, LINESTATE*); // Strip drawers: VOID vIoStripSolidHorizontal(PDEV*, STRIP*, LINESTATE*); VOID vIoStripSolidVertical(PDEV*, STRIP*, LINESTATE*); VOID vIoStripSolidDiagonalHorizontal(PDEV*, STRIP*, LINESTATE*); VOID vIoStripSolidDiagonalVertical(PDEV*, STRIP*, LINESTATE*); VOID vIoStripStyledHorizontal(PDEV*, STRIP*, LINESTATE*); VOID vIoStripStyledVertical(PDEV*, STRIP*, LINESTATE*); VOID vMmStripSolidHorizontal(PDEV*, STRIP*, LINESTATE*); VOID vMmStripSolidVertical(PDEV*, STRIP*, LINESTATE*); VOID vMmStripSolidDiagonalHorizontal(PDEV*, STRIP*, LINESTATE*); VOID vMmStripSolidDiagonalVertical(PDEV*, STRIP*, LINESTATE*); VOID vMmStripStyledHorizontal(PDEV*, STRIP*, LINESTATE*); VOID vMmStripStyledVertical(PDEV*, STRIP*, LINESTATE*);