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Posted: **Wed Jun 24, 2020 12:12 am**

hi,

under c:\MiniGUI\SAMPLES\Advanced\FillTriangle\FillTriangle.prg i found TriGradient.
but it is "without Parameter" and fill hole Form

: TriGradient.jpg (12.54 KiB) Viewed 2726 times

i need it for 3 Points

Code: Select all

GraGradient(::oPS, {X1,Y1}, {{X2,Y2}, {X3,Y3}}, aColors, GRA_GRADIENT_TRIANGLE)

: XBDTL_TriGradient.JPG (119.85 KiB) Viewed 2726 times

so how to modify "C" Code of c:\MiniGUI\SAMPLES\Advanced\FillTriangle\FillTriangle.prg

Posted: **Wed Jun 24, 2020 9:12 am**

hi,

i got "Delaunay Triangulation" working under HMG.

Point with different Color ( Value )

: XBDTL_001.jpg (77.7 KiB) Viewed 2692 times

calculate "Delaunay Triangulation"

: XBDTL_002.jpg (162.43 KiB) Viewed 2692 times

draw Gradient Color given by Point Color

: XBDTL_003.jpg (86.73 KiB) Viewed 2692 times

Posted: **Wed Jun 24, 2020 11:10 pm**

hi,

i search for Set of Colors exclude WHITE & BLACK

i have now 12 "strong" Colors

Code: Select all

FUNCTION GET_RGB_COLOR()
LOCAL aRet := {}

   AADD(aRet,{255,000,000})     // Red
   AADD(aRet,{255,128,000})     // Red-Yellow
   AADD(aRet,{255,255,000})     // Yello
   AADD(aRet,{128,255,000})     // Yello-Green
   AADD(aRet,{000,255,000})     // Green
   AADD(aRet,{000,255,128})     // Green-Cyan
   AADD(aRet,{000,255,255})     // Cyan
   AADD(aRet,{000,128,255})     // Cyan-Blue
   AADD(aRet,{000,000,255})     // Blue
   AADD(aRet,{128,000,255})     // Blue-Pink
   AADD(aRet,{255,000,255})     // Pink
   AADD(aRet,{255,000,128})     // Pink-Red

RETURN aRet

but that is not enough to make it "nice" so i try

Code: Select all

   aColor := NumColor2RGB( hb_RandomInt( 255*255*255 ) )

: XBDTL_16M_Colors.JPG (131.87 KiB) Viewed 2641 times

this are "too much" Colors ...

i like "strong" Color while some 16M Color have "light" Touch ... to much "white"

so how to get more "strong" Colors

Posted: **Wed Jun 24, 2020 11:24 pm**

hi,

here is "C"-Source for TriGradient

DLT_HB_FUNC.ZIP: (2.62 KiB) Downloaded 143 times

MiniGUI Extended Version use 4 Points ( Rect ).
for HMG i add 3 x Array {x,y,R,G,B} and 4th are {0,0,0,0,0}

Code: Select all

   hDC := BeginPaint(nHwnd, @pps )
   FillGradientEx( hDC ,{1024,0,250,0,0},{1024,768,0,250,0},{0,768,0,0,250})
   EndPaint(nHwnd, pps )

for Triangle Gradient i need 3 Points

Code: Select all

METHOD DrawTriangleGradient(cForm, aPos, aPos2, aPos3, aColors1, aColors2, aColors3) CLASS DemoForm
LOCAL lRet
LOCAL nHwnd, nHDC 

   nHwnd := GetformHandle( cForm )
   IF EMPTY(nHwnd)
     RETURN .F.
   ENDIF
   nHDC := GetDC( nHwnd )
   lRet := GRAGRADIENTEX( nHDC ,{aPos [1],aPos [2],aColors1[1],aColors1[2],aColors1[3]} ,;
                                         {aPos2[1],aPos2[2],aColors2[1],aColors2[2],aColors2[3]} ,;
                                         {aPos3[1],aPos3[2],aColors3[1],aColors3[2],aColors3[3]} )
   ReleaseDC( nHwnd, nHDC )

RETURN lRet

Posted: **Thu Jun 25, 2020 3:29 am**

beatifull

Posted: **Thu Jun 25, 2020 3:43 am**

hi,

this was made with Code from my Xbase++ App.
for 1000 Points it have to make about 2.000.000 "Circle" to find nearest 2 Points for Triangle.

so the Question is how to "speed up" ... does someone have a CUDA*** Sample how to use with harbour / HMG

*** calculate on Grafic Card from NVidea

Posted: **Sat Jul 11, 2020 1:27 am**

hi,

have test Source under 64 Bit and it is much faster than 32 Bit App

it use big Array and many Calculation ( Triangle )

for 1000 Point with about 2.000.000 Calculation it need 90 Sec. under 32 Bit App but only 45 Sec. when run 64 Bit App

see also this Thread http://www.hmgforum.com/viewtopic.php?f=5&t=6516

---

Source use CLASS Code but it is NOT the usual way how i "mix" HMG Syntax with CLASS Code
i simple was to lasy to re-write existing Xbase++ CLASS to Function.

HBDLT.ZIP: (15.32 KiB) Downloaded 141 times

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