Ejemplo n.º 1
1
func main() {
	imagick.Initialize()
	defer imagick.Terminate()

	mw := imagick.NewMagickWand()
	defer mw.Destroy()
	lw := imagick.NewMagickWand()
	defer lw.Destroy()
	pw := imagick.NewPixelWand()
	defer pw.Destroy()
	dw := imagick.NewDrawingWand()
	defer dw.Destroy()

	// Create the initial 640x480 transparent canvas
	pw.SetColor("none")
	mw.NewImage(640, 480, pw)

	pw.SetColor("white")
	dw.SetFillColor(pw)
	dw.RoundRectangle(15, 15, 624, 464, 15, 15)
	mw.DrawImage(dw)

	lw.ReadImage("logo:")
	// Note that MagickSetImageCompose is usually only used for the MagickMontageImage
	// function and isn't used or needed by MagickCompositeImage
	mw.CompositeImage(lw, imagick.COMPOSITE_OP_SRC_IN, 0, 0)

	/* Write the new image */
	mw.WriteImage("mask_result.png")
}
Ejemplo n.º 2
0
// Text effect 7 - Polar distortion
func textEffect7() {
	imagick.Initialize()
	defer imagick.Terminate()
	// This one uses d_args[0]
	mw := imagick.NewMagickWand()
	defer mw.Destroy()
	dw := imagick.NewDrawingWand()
	defer dw.Destroy()
	pw := imagick.NewPixelWand()
	defer pw.Destroy()
	// Create a 320x200 transparent canvas
	pw.SetColor("none")
	mw.NewImage(320, 200, pw)
	// Set up a 72 point font
	dw.SetFont("Verdana-Bold-Italic")
	dw.SetFontSize(72)
	// Now draw the text
	dw.Annotation(25, 65, "Magick")
	// Draw the image on to the mw
	mw.DrawImage(dw)
	d_args[0] = 0.0
	// DON'T FORGET to set the correct number of arguments here
	mw.DistortImage(imagick.DISTORTION_POLAR, d_args, true)
	//mw.ResetImagePage("")
	// Trim the image again
	mw.TrimImage(0)
	// Add the border
	pw.SetColor("none")
	mw.BorderImage(pw, 10, 10)
	// and write it
	mw.WriteImage("text_polar.png")
}
Ejemplo n.º 3
0
// Text effect 2 - tiled text using the builtin checkerboard pattern
// Anthony's Tiled Font effect
func textEffect2() {
	imagick.Initialize()
	defer imagick.Terminate()
	mw := imagick.NewMagickWand()
	defer mw.Destroy()
	dw := imagick.NewDrawingWand()
	defer dw.Destroy()
	pw := imagick.NewPixelWand()
	defer pw.Destroy()
	setTilePattern(dw, "#check", "pattern:checkerboard")
	pw.SetColor("lightblue")
	// Create a new transparent image
	mw.NewImage(320, 100, pw)
	// Set up a 72 point font
	dw.SetFont("Verdana-Bold-Italic")
	dw.SetFontSize(72)
	// Now draw the text
	dw.Annotation(28, 68, "Magick")
	// Draw the image on to the mw
	mw.DrawImage(dw)
	// Trim the image
	mw.TrimImage(0)
	// Add a transparent border
	pw.SetColor("lightblue")
	mw.BorderImage(pw, 5, 5)
	// and write it
	mw.WriteImage("text_pattern.png")
}
Ejemplo n.º 4
0
// Text effect 4 - bevelled font http://www.imagemagick.org/Usage/fonts/#bevel
func textEffect4() {
	imagick.Initialize()
	defer imagick.Terminate()
	mw := imagick.NewMagickWand()
	defer mw.Destroy()
	dw := imagick.NewDrawingWand()
	defer dw.Destroy()
	pw := imagick.NewPixelWand()
	defer pw.Destroy()
	// Create a 320x100 canvas
	pw.SetColor("gray")
	mw.NewImage(320, 100, pw)
	// Set up a 72 point font
	dw.SetFont("Verdana-Bold-Italic")
	dw.SetFontSize(72)
	// Set up a 72 point white font
	pw.SetColor("white")
	dw.SetFillColor(pw)
	// Now draw the text
	dw.Annotation(25, 65, "Magick")
	// Draw the image on to the mw
	mw.DrawImage(dw)
	// the "gray" parameter must be true to get the effect shown on Anthony's page
	mw.ShadeImage(true, 140, 60)
	pw.SetColor("yellow")
	dw.SetFillColor(pw)
	cpw := imagick.NewPixelWand()
	defer cpw.Destroy()
	cpw.SetColor("gold")
	mw.ColorizeImage(pw, cpw)
	// and write it
	mw.WriteImage("text_bevel.png")
}
Ejemplo n.º 5
0
// Text effect 3 -  arc font (similar to http://www.imagemagick.org/Usage/fonts/#arc)
func textEffect3() {
	imagick.Initialize()
	defer imagick.Terminate()
	mw := imagick.NewMagickWand()
	defer mw.Destroy()
	dw := imagick.NewDrawingWand()
	defer dw.Destroy()
	pw := imagick.NewPixelWand()
	defer pw.Destroy()
	// Create a 320x100 lightblue canvas
	pw.SetColor("lightblue")
	mw.NewImage(320, 100, pw)
	// Set up a 72 point font
	dw.SetFont("Verdana-Bold-Italic")
	dw.SetFontSize(72)
	// Now draw the text
	dw.Annotation(25, 65, "Magick")
	// Draw the image on to the mw
	mw.DrawImage(dw)
	mw.DistortImage(imagick.DISTORTION_ARC, dargs, false)
	// Trim the image
	mw.TrimImage(0)
	// Add the border
	pw.SetColor("lightblue")
	mw.BorderImage(pw, 10, 10)
	// and write it
	mw.WriteImage("text_arc.png")
}
Ejemplo n.º 6
0
// Text effect 5 and 6 - Plain text and then Barrel distortion
func textEffect5And6() {
	imagick.Initialize()
	defer imagick.Terminate()
	// This one uses d_args
	mw := imagick.NewMagickWand()
	defer mw.Destroy()
	dw := imagick.NewDrawingWand()
	defer dw.Destroy()
	pw := imagick.NewPixelWand()
	defer pw.Destroy()
	// Create a 320x100 transparent canvas
	pw.SetColor("none")
	mw.NewImage(320, 100, pw)
	// Set up a 72 point font
	dw.SetFont("Verdana-Bold-Italic")
	dw.SetFontSize(72)
	// Now draw the text
	dw.Annotation(25, 65, "Magick")
	// Draw the image on to the mw
	mw.DrawImage(dw)
	mw.WriteImage("text_plain.png")
	// Trim the image
	mw.TrimImage(0)
	// Add the border
	pw.SetColor("none")
	mw.BorderImage(pw, 10, 10)
	//mw.SetImageMatte(true)
	//mw.SetImageVirtualPixelMethod(TransparentVirtualPixelMethod)
	// 	d_args[0] = 0.1;d_args[1] = -0.25;d_args[2] = -0.25; [3] += .1
	// The first value should be positive. If it is negative the image is *really* distorted
	d_args[0] = 0.0
	d_args[1] = 0.0
	d_args[2] = 0.5
	// d_args[3] should normally be chosen such the sum of all 4 values is 1
	// so that the result is the same size as the original
	// You can override the sum with a different value
	// If the sum is greater than 1 the resulting image will be smaller than the original
	d_args[3] = 1 - (d_args[0] + d_args[1] + d_args[2])
	// Make the result image smaller so that it isn't as likely
	// to overflow the edges
	// d_args[3] += 0.1
	// 0.0,0.0,0.5,0.5,0.0,0.0,-0.5,1.9
	d_args[3] = 0.5
	d_args[4] = 0.0
	d_args[5] = 0.0
	d_args[6] = -0.5
	d_args[7] = 1.9
	// DON'T FORGET to set the correct number of arguments here
	mw.DistortImage(imagick.DISTORTION_BARREL, d_args, true)
	//mw.ResetImagePage("")
	// Trim the image again
	mw.TrimImage(0)
	// Add the border
	pw.SetColor("none")
	mw.BorderImage(pw, 10, 10)
	// and write it
	mw.WriteImage("text_barrel.png")
}
Ejemplo n.º 7
0
func main() {
	imagick.Initialize()
	defer imagick.Terminate()

	// Current coordinates of text
	var dx, dy float64
	// Width of a space in current font/size
	var sx float64

	mw := imagick.NewMagickWand()
	dw := imagick.NewDrawingWand()

	// Set the size of the image
	mw.SetSize(300, 100)
	//mw.SetImageAlphaChannel(imagick.CHANNEL_ALPHA)
	mw.ReadImage("xc:white")

	// DO NOT SET GRAVITY - it makes text placement more complicated
	// (unless it does exactly what you wanted anyway).

	// Start near the left edge
	dx = 10

	// If we know the largest font we're using, we can set the y coordinate
	// fairly accurately. In this case it is the 72 point Times font, so to
	// place the text such that the largest almost touches the top of the image
	// we just add the text height to the descender to give the coordinate for
	// our baseline.
	// In this case the largest is the 72 point Times-New-Roman so I'll use that
	// to compute the baseline
	dw.SetFontSize(72)
	dw.SetFont("Times-New-Roman")
	fm := mw.QueryFontMetrics(dw, "M")
	dy = fm.CharacterHeight + fm.Descender
	// Note that we must free up the fontmetric array once we're done with it

	// this
	draw_setfont(mw, dw, "Arial", 48, "#40FF80", &sx)
	draw_metrics(mw, dw, &dx, dy, sx, "this")

	// is
	// A NULL signals to draw_setfont that the font stays the same
	draw_setfont(mw, dw, "", 24, "#8040BF", &sx)
	draw_metrics(mw, dw, &dx, dy, sx, "is")

	// my
	draw_setfont(mw, dw, "Times-New-Roman", 18, "#BF00BF", &sx)
	draw_metrics(mw, dw, &dx, dy, sx, "my")

	// text
	draw_setfont(mw, dw, "", 72, "#0F0FBF", &sx)
	draw_metrics(mw, dw, &dx, dy, sx, "text")
	mw.DrawImage(dw)

	// Now write the magickwand image
	mw.WriteImage("metric1.gif")
}
Ejemplo n.º 8
0
// Text effect 1 - shadow effect using MagickShadowImage
// NOTE - if an image has a transparent background, adding a border of any colour other
// than "none" will remove all the transparency and replace it with the border's colour
func textEffect1() {
	imagick.Initialize()
	defer imagick.Terminate()
	mw := imagick.NewMagickWand()
	defer mw.Destroy()
	dw := imagick.NewDrawingWand()
	defer dw.Destroy()
	pw := imagick.NewPixelWand()
	defer pw.Destroy()
	pw.SetColor("none")
	// Create a new transparent image
	mw.NewImage(350, 100, pw)
	// Set up a 72 point white font
	pw.SetColor("white")
	dw.SetFillColor(pw)
	dw.SetFont("Verdana-Bold-Italic")
	dw.SetFontSize(72)
	// Add a black outline to the text
	pw.SetColor("black")
	dw.SetStrokeColor(pw)
	// Turn antialias on - not sure this makes a difference
	dw.SetTextAntialias(true)
	// Now draw the text
	dw.Annotation(25, 65, "Magick")
	// Draw the image on to the mw
	mw.DrawImage(dw)
	// Trim the image down to include only the text
	mw.TrimImage(0)
	// equivalent to the command line +repage
	mw.ResetImagePage("")
	// Make a copy of the text image
	cw := mw.Clone()
	// Set the background colour to blue for the shadow
	pw.SetColor("blue")
	mw.SetImageBackgroundColor(pw)
	// Opacity is a real number indicating (apparently) percentage
	mw.ShadowImage(70, 4, 5, 5)
	// Composite the text on top of the shadow
	mw.CompositeImage(cw, imagick.COMPOSITE_OP_OVER, 5, 5)
	cw.Destroy()
	cw = imagick.NewMagickWand()
	defer cw.Destroy()
	// Create a new image the same size as the text image and put a solid colour
	// as its background
	pw.SetColor("rgb(125,215,255)")
	cw.NewImage(mw.GetImageWidth(), mw.GetImageHeight(), pw)
	// Now composite the shadowed text over the plain background
	cw.CompositeImage(mw, imagick.COMPOSITE_OP_OVER, 0, 0)
	// and write the result
	cw.WriteImage("text_shadow.png")
}
Ejemplo n.º 9
0
func useDraw() {
	imagick.Initialize()
	defer imagick.Terminate()

	/* Create a wand */
	mw := imagick.NewMagickWand()
	defer mw.Destroy()
	/* Read the input image */
	mw.ReadImage("logo:")
	fill := imagick.NewPixelWand()
	defer fill.Destroy()
	dw := imagick.NewDrawingWand()
	defer dw.Destroy()
	// Set the fill to "red" or you can do the same thing with this:
	fill.SetColor("red")
	dw.SetFillColor(fill)
	// Uses the current Fill as the colour of the point at 200,100
	dw.Point(200, 100)
	mw.DrawImage(dw)
	/* write it */
	mw.WriteImage("logo_pixel_drawingwand.gif")
}
Ejemplo n.º 10
0
// Text effect 8 - Shepard's distortion
func textEffect8() {
	imagick.Initialize()
	defer imagick.Terminate()
	// This one uses d_args[0]
	mw := imagick.NewMagickWand()
	defer mw.Destroy()
	dw := imagick.NewDrawingWand()
	defer dw.Destroy()
	pw := imagick.NewPixelWand()
	defer pw.Destroy()
	// Create a 320x200 transparent canvas
	pw.SetColor("none")
	mw.NewImage(640, 480, pw)
	// Set up a 72 point font
	dw.SetFont("Verdana-Bold-Italic")
	dw.SetFontSize(72)
	// Now draw the text
	dw.Annotation(50, 240, "Magick Rocks")
	// Draw the image on to the mw
	mw.DrawImage(dw)
	d_args[0] = 150.0
	d_args[1] = 190.0
	d_args[2] = 100.0
	d_args[3] = 290.0
	d_args[4] = 500.0
	d_args[5] = 200.0
	d_args[6] = 430.0
	d_args[7] = 130.0
	// DON'T FORGET to set the correct number of arguments here
	mw.DistortImage(imagick.DISTORTION_SHEPARDS, d_args, true)
	// Trim the image
	mw.TrimImage(0)
	// Add the border
	pw.SetColor("none")
	mw.BorderImage(pw, 10, 10)
	// and write it
	mw.WriteImage("text_shepards.png")
}
Ejemplo n.º 11
0
func main() {
	imagick.Initialize()
	defer imagick.Terminate()

	/* First step is to create the gel shape:
	convert -size 100x60 xc:none \
	          -fill red -draw 'circle    25,30  10,30' \
	                    -draw 'circle    75,30  90,30' \
	                    -draw 'rectangle 25,15  75,45' \
	          gel_shape.png
	*/

	/* Create a wand */
	mw := imagick.NewMagickWand()
	pw := imagick.NewPixelWand()
	dw := imagick.NewDrawingWand()

	mw.SetSize(100, 60)
	mw.ReadImage("xc:none")

	pw.SetColor("red")
	dw.SetFillColor(pw)
	dw.Circle(25, 30, 10, 30)
	dw.Circle(75, 30, 90, 30)
	dw.Rectangle(25, 15, 75, 45)

	// Now we draw the Drawing wand on to the Magick Wand
	mw.DrawImage(dw)
	mw.WriteImage("gel_shape.png")

	dw.Destroy()
	pw.Destroy()
	mw.Destroy()

	/* Next step is to create the gel highlight:
	convert gel_shape.png \
	            \( +clone -fx A +matte  -blur 0x12  -shade 110x0 -normalize \
	               -sigmoidal-contrast 16,60% -evaluate multiply .5 \
	               -roll +5+10 +clone -compose Screen -composite \) \
	            -compose In  -composite  gel_highlight.png
	*/

	mw = imagick.NewMagickWand()
	mw.ReadImage("gel_shape.png")

	mwc := mw.Clone()
	mwf, err := mwc.FxImage("A")
	if err != nil {
		panic(err)
	}

	mwf.SetImageAlphaChannel(imagick.ALPHA_CHANNEL_DEACTIVATE)
	mwf.BlurImage(0, 12)
	mwf.ShadeImage(true, 110, 0)
	mwf.NormalizeImage()

	// The last argument is specified as a percentage on the command line
	// but is specified to the function as a percentage of the QuantumRange
	mwf.SigmoidalContrastImage(true, 16, 0.6*imagick.QUANTUM_RANGE)
	mwf.EvaluateImage(imagick.EVAL_OP_MULTIPLY, 0.5)
	mwf.RollImage(5, 10)

	mwc.Destroy()
	// The +clone operation copies the original but only so that
	// it can be used in the following composite operation, so we don't
	// actually need to do a clone, just reference the original image.
	mwf.CompositeImage(mw, imagick.COMPOSITE_OP_SCREEN, 0, 0)

	mw.CompositeImage(mwf, imagick.COMPOSITE_OP_IN, 0, 0)
	mw.WriteImage("gel_highlight.png")

	mw.Destroy()
	mwc.Destroy()
	mwf.Destroy()

	// Now create the gel border
	/*
		convert gel_highlight.png \
		            \( +clone -fx A  +matte -blur 0x2  -shade 0x90 -normalize \
		               -blur 0x2  -negate -evaluate multiply .4 -negate -roll -.5-1 \
		               +clone  -compose Multiply -composite \) \
		            -compose In  -composite  gel_border.png

	*/

	mw = imagick.NewMagickWand()
	mw.ReadImage("gel_highlight.png")
	mwc = mw.Clone()
	mwf, err = mwc.FxImage("A")
	if err != nil {
		panic(err)
	}
	mwf.SetImageAlphaChannel(imagick.ALPHA_CHANNEL_DEACTIVATE)
	mwf.BlurImage(0, 2)
	mwf.ShadeImage(true, 0, 90)
	mwf.NormalizeImage()
	mwf.BlurImage(0, 2)
	mwf.NegateImage(false)
	mwf.EvaluateImage(imagick.EVAL_OP_MULTIPLY, 0.4)
	mwf.NegateImage(false)
	mwf.RollImage(-1, -1)
	mwf.CompositeImage(mw, imagick.COMPOSITE_OP_MULTIPLY, 0, 0)
	mw.CompositeImage(mwf, imagick.COMPOSITE_OP_IN, 0, 0)
	mw.WriteImage("gel_border.png")

	mw.Destroy()
	mwc.Destroy()
	mwf.Destroy()

	// and finally the text and shadow effect
	/*
		convert gel_border.png \
		            -font Candice  -pointsize 24  -fill white  -stroke black \
		            -gravity Center  -annotate 0 "Gel"  -trim -repage 0x0+4+4 \
		            \( +clone -background navy -shadow 80x4+4+4 \) +swap \
		            -background none  -flatten    gel_button.png
	*/

	mw = imagick.NewMagickWand()
	dw = imagick.NewDrawingWand()
	pw = imagick.NewPixelWand()

	mw.ReadImage("gel_border.png")
	dw.SetFont("Lucida-Handwriting-Italic")
	dw.SetFontSize(24)
	pw.SetColor("white")
	dw.SetFillColor(pw)
	pw.SetColor("black")
	dw.SetStrokeColor(pw)
	dw.SetGravity(imagick.GRAVITY_CENTER)
	// It is important to notice here that MagickAnnotateImage renders the text on
	// to the MagickWand, NOT the DrawingWand. It only uses the DrawingWand for font
	// and colour information etc.
	mw.AnnotateImage(dw, 0, 0, 0, "Gel")
	mw.TrimImage(0)
	mw.ResetImagePage("0x0+4+4")
	mwc = mw.Clone()
	pw.SetColor("navy")
	mwc.SetImageBackgroundColor(pw)
	mwc.ShadowImage(80, 4, 4, 4)
	mwf = imagick.NewMagickWand()
	mwf.AddImage(mwc)
	mwf.AddImage(mw)

	mw.Destroy()
	mwc.Destroy()

	pw.SetColor("none")
	mwf.SetImageBackgroundColor(pw)
	mw = mwf.MergeImageLayers(imagick.IMAGE_LAYER_FLATTEN)
	mw.WriteImage("gel_button.png")

	mw.Destroy()
	mwc.Destroy()
	mwf.Destroy()
	dw.Destroy()
	pw.Destroy()
}
Ejemplo n.º 12
0
func main() {
	imagick.Initialize()
	defer imagick.Terminate()

	mw := imagick.NewMagickWand()
	defer mw.Destroy()
	pw := imagick.NewPixelWand()
	defer pw.Destroy()
	dw := imagick.NewDrawingWand()
	defer dw.Destroy()

	if err := mw.SetSize(170, 100); err != nil {
		panic(err)
	}
	if err := mw.ReadImage("xc:black"); err != nil {
		panic(err)
	}

	pw.SetColor("white")
	dw.SetFillColor(pw)
	dw.Circle(50, 50, 13, 50)
	dw.Circle(120, 50, 157, 50)
	dw.Rectangle(50, 13, 120, 87)

	pw.SetColor("black")
	dw.SetFillColor(pw)
	dw.Circle(50, 50, 25, 50)
	dw.Circle(120, 50, 145, 50)
	dw.Rectangle(50, 25, 120, 75)

	pw.SetColor("white")
	dw.SetFillColor(pw)
	dw.Circle(60, 50, 40, 50)
	dw.Circle(110, 50, 130, 50)
	dw.Rectangle(60, 30, 110, 70)

	// Now we draw the Drawing wand on to the Magick Wand
	if err := mw.DrawImage(dw); err != nil {
		panic(err)
	}
	if err := mw.GaussianBlurImage(1, 1); err != nil {
		panic(err)
	}
	// Turn the matte of == +matte
	if err := mw.SetImageMatte(false); err != nil {
		panic(err)
	}
	if err := mw.WriteImage("logo_mask.png"); err != nil {
		panic(err)
	}

	mw.Destroy()
	dw.Destroy()
	pw.Destroy()

	mw = imagick.NewMagickWand()
	pw = imagick.NewPixelWand()
	dw = imagick.NewDrawingWand()

	mwc := imagick.NewMagickWand()
	defer mwc.Destroy()

	mw.ReadImage("logo_mask.png")

	pw.SetColor("red")
	dw.SetFillColor(pw)

	dw.Color(0, 0, imagick.PAINT_METHOD_RESET)
	mw.DrawImage(dw)

	mwc.ReadImage("logo_mask.png")
	mwc.SetImageMatte(false)
	mw.CompositeImage(mwc, imagick.COMPOSITE_OP_COPY_OPACITY, 0, 0)

	// Annotate gets all the font information from the drawingwand
	// but draws the text on the magickwand
	// Get the first available "*Sans*" font
	fonts := mw.QueryFonts("*Sans*")
	dw.SetFont(fonts[0])
	dw.SetFontSize(36)
	pw.SetColor("white")
	dw.SetFillColor(pw)
	pw.SetColor("black")
	dw.SetStrokeColor(pw)
	dw.SetGravity(imagick.GRAVITY_CENTER)
	mw.AnnotateImage(dw, 0, 0, 0, "Ant")
	mw.WriteImage("logo_ant.png")

	mwc.Destroy()
	mw.Destroy()

	mw = imagick.NewMagickWand()

	if err := mw.ReadImage("logo_ant.png"); err != nil {
		panic(err)
	}

	mwf, err := mw.FxImage("A")
	if err != nil {
		panic(err)
	}
	defer mwf.Destroy()

	//mw.SetImageMatte(false)

	// +matte is the same as -alpha off
	mwf.SetImageAlphaChannel(imagick.ALPHA_CHANNEL_DEACTIVATE)
	mwf.BlurImage(0, 6)
	mwf.ShadeImage(true, 110, 30)
	mwf.NormalizeImage()

	// ant.png  -compose Overlay -composite
	mwc = imagick.NewMagickWand()
	mwc.ReadImage("logo_ant.png")
	mwf.CompositeImage(mwc, imagick.COMPOSITE_OP_OVERLAY, 0, 0)
	mwc.Destroy()

	// ant.png  -matte  -compose Dst_In  -composite
	mwc = imagick.NewMagickWand()
	mwc.ReadImage("logo_ant.png")

	// -matte is the same as -alpha on
	// I don't understand why the -matte in the command line
	// does NOT operate on the image just read in (logo_ant.png in mwc)
	// but on the image before it in the list
	// It would appear that the -matte affects each wand currently in the
	// command list because applying it to both wands gives the same result
	mwf.SetImageAlphaChannel(imagick.ALPHA_CHANNEL_SET)
	mwf.CompositeImage(mwc, imagick.COMPOSITE_OP_DST_IN, 0, 0)

	mwf.WriteImage("logo_ant_3D.png")

	mw.Destroy()
	mwc.Destroy()
	mwf.Destroy()

	/* Now for the shadow
	   convert ant_3D.png \( +clone -background navy -shadow 80x4+6+6 \) +swap \
	             -background none  -layers merge +repage ant_3D_shadowed.png
	*/

	mw = imagick.NewMagickWand()
	mw.ReadImage("logo_ant_3D.png")

	mwc = mw.Clone()

	pw.SetColor("navy")
	mwc.SetImageBackgroundColor(pw)

	mwc.ShadowImage(80, 4, 6, 6)

	// at this point
	// mw = ant_3D.png
	// mwc = +clone -background navy -shadow 80x4+6+6
	// To do the +swap I create a new blank MagickWand and then
	// put mwc and mw into it. ImageMagick probably doesn't do it
	// this way but it works here and that's good enough for me!
	mwf = imagick.NewMagickWand()
	mwf.AddImage(mwc)
	mwf.AddImage(mw)
	mwc.Destroy()

	pw.SetColor("none")
	mwf.SetImageBackgroundColor(pw)
	mwc = mwf.MergeImageLayers(imagick.IMAGE_LAYER_MERGE)
	mwc.WriteImage("logo_shadow_3D.png")

	mw.Destroy()
	mwc.Destroy()
	mwf.Destroy()

	/*
	   and now for the fancy background
	   convert ant_3D_shadowed.png \
	             \( +clone +repage +matte   -fx 'rand()' -shade 120x30 \
	                -fill grey70 -colorize 60 \
	                -fill lavender -tint 100 \) -insert 0 \
	             -flatten  ant_3D_bg.jpg
	*/
	mw = imagick.NewMagickWand()
	mw.ReadImage("logo_shadow_3D.png")

	mwc = mw.Clone()

	// +repage
	mwc.ResetImagePage("")

	// +matte is the same as -alpha off
	mwc.SetImageAlphaChannel(imagick.ALPHA_CHANNEL_DEACTIVATE)
	mwf, err = mwc.FxImage("rand()")
	if err != nil {
		panic(err)
	}

	mwf.ShadeImage(true, 120, 30)
	pw.SetColor("grey70")

	// It seems that this must be a separate pixelwand for Colorize to work!
	pwo := imagick.NewPixelWand()
	defer pwo.Destroy()
	// AHA .. this is how to do a 60% colorize
	pwo.SetColor("rgb(60%,60%,60%)")
	mwf.ColorizeImage(pw, pwo)

	pw.SetColor("lavender")

	// and this is a 100% tint
	pwo.SetColor("rgb(100%,100%,100%)")
	mwf.TintImage(pw, pwo)

	mwc.Destroy()

	mwc = imagick.NewMagickWand()
	mwc.AddImage(mwf)
	mwc.AddImage(mw)

	mwf = mwc.MergeImageLayers(imagick.IMAGE_LAYER_FLATTEN)

	if err := mwf.DisplayImage(os.Getenv("DYSPLAY")); err != nil {
		panic(err)
	}
}
Ejemplo n.º 13
0
func main() {
	imagick.Initialize()
	defer imagick.Terminate()

	image := imagick.NewMagickWand()
	defer image.Destroy()
	pw := imagick.NewPixelWand()
	defer pw.Destroy()

	image.ReadImage("fract6.jpg")

	// scale it down
	w := image.GetImageWidth()
	h := image.GetImageHeight()

	pw.SetColor("transparent")
	if err := image.ShearImage(pw, 45, 0); err != nil {
		panic(err)
	}

	w = image.GetImageWidth()
	h = image.GetImageHeight()

	// scale it to make it look like it is laying down
	if err := image.ScaleImage(w, h/2); err != nil {
		panic(err)
	}

	// Get image stats
	w = image.GetImageWidth()
	h = image.GetImageHeight()

	// Make a blank canvas to draw on
	canvas := imagick.NewMagickWand()
	defer canvas.Destroy()
	// Use a colour from the input image
	pw, err := image.GetImagePixelColor(0, 0)
	if err != nil {
		panic(err)
	}
	canvas.NewImage(w, h*2, pw)

	offset := int(h)
	// The original drawing method was to go along each row from top to bottom so that
	// a line in the "front" (which is one lower down the picture) will be drawn over
	// one behind it.
	// The problem with this method is that every line is drawn even if it will be covered
	// up by a line "in front" of it later on.
	// The method used here goes up each column from left to right and only draws a line if
	// it is longer than everything drawn so far in this column and will therefore be visible.
	// With the new drawing method this takes 13 secs - the previous method took 59 secs
	// loop through all points in image
	for x := 0; x < int(w); x++ {
		// The PHP version created, used and destroyed the drawingwand inside
		// the inner loop but it is about 25% faster to do only the DrawLine
		// inside the loop
		line := imagick.NewDrawingWand()
		line_height := 0
		for y := int(h) - 1; y >= 0; y-- {
			// get (r,g,b) and grey value
			pw, err := image.GetImagePixelColor(int(x), int(y))
			if err != nil {
				continue
			}
			// 255* adjusts the rgb values to Q8 even if the IM being used is Q16
			r := (int)(255 * pw.GetRed())
			g := (int)(255 * pw.GetGreen())
			b := (int)(255 * pw.GetBlue())

			// Calculate grayscale - a divisor of 10-25 seems to work well.
			//			grey = (r+g+b)/25
			grey := (r + g + b) / 15
			//			grey = (r+g+b)/10
			// Only draw a line if it will show "above" what's already been done
			if line_height == 0 || line_height < grey {
				line.SetFillColor(pw)
				line.SetStrokeColor(pw)
				// Draw the part of the line that is visible
				start_y := y + offset - line_height
				end_y := y - grey + offset
				line.Line(float64(x), float64(start_y), float64(x), float64(end_y))
				line_height = grey
			}
			line_height--
		}
		// Draw the lines on the image
		canvas.DrawImage(line)
		line.Destroy()
	}
	canvas.ScaleImage(w-h, h*2)
	// write canvas
	canvas.WriteImage("3d_fractal.jpg")
}
Ejemplo n.º 14
0
func main() {
	imagick.Initialize()
	defer imagick.Terminate()

	mw := imagick.NewMagickWand()
	defer mw.Destroy()
	dw := imagick.NewDrawingWand()
	defer dw.Destroy()
	cw := imagick.NewPixelWand()

	diameter := uint(640)
	radius := float64(diameter / 2)

	cw.SetColor("white")
	mw.NewImage(diameter, diameter, cw)

	dw.SetStrokeOpacity(1)

	// circle and rectangle
	dw.PushDrawingWand()

	// Hmmmm. Very weird. rgb(0,0,1) draws a black line around the edge
	// of the circle as it should. But rgb(0,0,0) or black don't.
	// AND if I remove the PixelSetColor then it draws a white boundary
	// around the rectangle (and presumably around the circle too)
	cw.SetColor("rgb(0,0,1)")

	dw.SetStrokeColor(cw)
	dw.SetStrokeWidth(4)
	dw.SetStrokeAntialias(true)
	cw.SetColor("red")

	//dw.SetStrokeOpacity(1)
	dw.SetFillColor(cw)

	dw.Circle(radius, radius, radius, radius*2)
	dw.Rectangle(50, 13, 120, 87)
	dw.PopDrawingWand()

	// rounded rectangle
	dw.PushDrawingWand()

	points := []imagick.PointInfo{
		{378.1, 81.72}, {381.1, 79.56}, {384.3, 78.12}, {387.6, 77.33},
		{391.1, 77.11}, {394.6, 77.62}, {397.8, 78.77}, {400.9, 80.57},
		{403.6, 83.02}, {523.9, 216.8}, {526.2, 219.7}, {527.6, 223},
		{528.4, 226.4}, {528.6, 229.8}, {528, 233.3}, {526.9, 236.5},
		{525.1, 239.5}, {522.6, 242.2}, {495.9, 266.3}, {493, 268.5},
		{489.7, 269.9}, {486.4, 270.8}, {482.9, 270.9}, {479.5, 270.4},
		{476.2, 269.3}, {473.2, 267.5}, {470.4, 265}, {350, 131.2},
		{347.8, 128.3}, {346.4, 125.1}, {345.6, 121.7}, {345.4, 118.2},
		{346, 114.8}, {347.1, 111.5}, {348.9, 108.5}, {351.4, 105.8},
		{378.1, 81.72},
	}

	dw.SetStrokeAntialias(true)
	dw.SetStrokeWidth(2.016)
	dw.SetStrokeLineCap(imagick.LINE_CAP_ROUND)
	dw.SetStrokeLineJoin(imagick.LINE_JOIN_ROUND)

	dw.SetStrokeDashArray(make([]float64, 0))
	cw.SetColor("rgb(0,0,128)")
	// If strokecolor is removed completely then the circle is not there
	dw.SetStrokeColor(cw)
	// But now I've added strokeopacity - 1=circle there 0=circle not there
	// If opacity is 1 the black edge around the rectangle is visible
	dw.SetStrokeOpacity(1)
	// No effect
	// dw.SetFillRule(imagick.FILL_EVEN_ODD)
	// this doesn't affect the circle
	cw.SetColor("#c2c280")
	dw.SetFillColor(cw)
	// 1=circle there 0=circle there but rectangle fill disappears
	// dw.SetFillOpacity(0)
	dw.Polygon(points)
	dw.SetStrokeOpacity(1)

	dw.PopDrawingWand()

	// yellow polygon
	dw.PushDrawingWand()
	points = []imagick.PointInfo{
		{540, 288}, {561.6, 216}, {547.2, 43.2}, {280.8, 36},
		{302.4, 194.4}, {331.2, 64.8}, {504, 64.8}, {475.2, 115.2},
		{525.6, 93.6}, {496.8, 158.4}, {532.8, 136.8}, {518.4, 180},
		{540, 172.8}, {540, 223.2}, {540, 288},
	}

	dw.SetStrokeAntialias(true)
	dw.SetStrokeWidth(5.976)
	dw.SetStrokeLineCap(imagick.LINE_CAP_ROUND)
	dw.SetStrokeLineJoin(imagick.LINE_JOIN_ROUND)
	dw.SetStrokeDashArray([]float64{})
	cw.SetColor("#4000c2")
	dw.SetStrokeColor(cw)
	dw.SetFillRule(imagick.FILL_EVEN_ODD)
	cw.SetColor("#ffff00")
	dw.SetFillColor(cw)
	dw.Polygon(points)
	dw.PopDrawingWand()

	// rotated and translated ellipse
	// The DrawEllipse function only draws the ellipse with
	// the major and minor axes orthogonally aligned. This also
	// applies to some of the other functions such as DrawRectangle.
	// If you want an ellipse that has the major axis rotated, you
	// have to rotate the coordinate system before the ellipse is
	// drawn. And you'll also want the ellipse somewhere on the
	// image rather than at the top left (where the 0,0 origin is
	// located) so before drawing the ellipse we move the origin to
	// wherever we want the centre of the ellipse to be and then
	// rotate the coordinate system by the angle of rotation we wish
	// to apply to the ellipse and *then* we draw the ellipse.
	// NOTE that doing all this within PushDrawingWand()/PopDrawingWand()
	// means that the coordinate system will be restored after
	// the PopDrawingWand
	dw.PushDrawingWand()

	cw.SetColor("rgb(0,0,1)")

	dw.SetStrokeColor(cw)
	dw.SetStrokeWidth(2)
	dw.SetStrokeAntialias(true)
	cw.SetColor("orange")
	//dw.DrawSetStrokeOpacity(1)
	dw.SetFillColor(cw)
	// Be careful of the order in which you meddle with the
	// coordinate system! Rotating and then translating is
	// not the same as translating then rotating
	dw.Translate(radius/2, 3*radius/2)
	dw.Rotate(-30)
	dw.Ellipse(0, 0, radius/8, 3*radius/8, 0, 360)
	dw.PopDrawingWand()

	// A line from the centre of the circle
	// to the top left edge of the image
	dw.Line(0, 0, radius, radius)

	mw.DrawImage(dw)
	mw.WriteImage("chart_test.jpg")
}