From 4d64e4cd434426234a5c313c151cd79b6afc299e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juha=20Vehvil=C3=A4inen?= <jusu@users.sourceforge.net>
Date: Sat, 6 Jul 2002 17:50:18 +0000
Subject: *** empty log message ***

svn path=/trunk/Framestein/; revision=27
---
 Patches/vdrawarray.c | 131 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 Patches/vdrawarray.c

(limited to 'Patches/vdrawarray.c')

diff --git a/Patches/vdrawarray.c b/Patches/vdrawarray.c
new file mode 100644
index 0000000..fa8fab7
--- /dev/null
+++ b/Patches/vdrawarray.c
@@ -0,0 +1,131 @@
+#include "m_pd.h"
+#include "math.h"
+#include "sharemem.h"
+#include "vframe.h"
+
+/* -------------------------- vdrawarray ------------------------------ */
+static t_class *vdrawarray_class;
+
+typedef struct _vdrawarray
+{
+	t_object x_obj;
+	t_symbol *array_name;
+	t_float startpos, endpos;
+	int id;
+	HANDLE hvf, hbits;
+	LPVOID memvf, membits;
+	struct vframeimage *vfp;
+} t_vdrawarray;
+
+void vdrawarray_set(t_vdrawarray *x, t_symbol *s)
+{
+	x->array_name = s;
+}
+
+static void vdrawarray_bang(t_vdrawarray *x)
+{
+	int i, o, h, y, bytesize, gsize, pos, len;
+	t_float *gdata, tmpf;
+	byte *p;
+	t_garray *g;
+
+	if(!x->id)
+	{
+		post("vdrawarray: connect vframe first");
+		return;
+	}
+
+	if(!(g = (t_garray *)pd_findbyclass(x->array_name, garray_class)))
+	{
+		pd_error(x, "vdrawarray: %s: no such table", x->array_name->s_name);
+		return;
+	}
+
+	garray_getfloatarray(g, &gsize, &gdata);
+
+	h = x->vfp->f.height;
+	p = (byte*)x->membits;
+	bytesize = x->vfp->f.pixelformat/8;
+
+	if(x->startpos==0 && x->endpos==0)
+		x->endpos=gsize;
+
+	if(x->startpos<0) x->startpos=0;
+	if(x->startpos>gsize) x->startpos=gsize;
+	if(x->endpos<0) x->endpos=0;
+	if(x->endpos>gsize) x->endpos=gsize;
+
+	if(x->endpos<x->startpos)
+	{
+		tmpf = x->endpos;
+		x->endpos = x->startpos;
+		x->startpos = tmpf;
+	}
+
+	for(i=0; i<x->vfp->f.width; i++)
+	{
+		pos = (int)((i / (float)x->vfp->f.width) * (x->endpos-x->startpos) + x->startpos );
+		len = (int)((fabs(gdata[pos]) * (float)x->vfp->f.height));		
+
+		o = (x->vfp->f.height - len) / 2;
+		for(y=o; y<o+len && y<x->vfp->f.height; y++)
+			memset(&p[y*x->vfp->f.lpitch+i*bytesize], 253, bytesize);
+	}
+}
+
+static void vdrawarray_float(t_vdrawarray *x, t_float f)
+{
+	if(x->id==f && x->membits!=NULL)
+	{
+		outlet_float(x->x_obj.ob_outlet, x->id);
+		vdrawarray_bang(x);
+		return;
+	}
+
+	x->id = f;
+
+	openframedatabyid(x->id,
+	 &x->hvf, &x->hbits, &x->memvf, &x->membits, &x->vfp);
+	if(!x->membits)
+	{
+		post("vdrawarray: no memory at %d", x->id);
+		return;
+	} else
+	{
+		outlet_float(x->x_obj.ob_outlet, x->id);
+		vdrawarray_bang(x);
+	}
+}
+
+static void *vdrawarray_new(t_symbol *s)
+{
+	t_vdrawarray *x = (t_vdrawarray *)pd_new(vdrawarray_class);
+
+	x->array_name = s;
+	x->id=0;
+	x->hvf=NULL;
+	x->memvf=NULL;
+	x->hbits=NULL;
+	x->membits=NULL;
+	x->startpos=x->endpos=0;
+	outlet_new(&x->x_obj, gensym("float"));
+	floatinlet_new(&x->x_obj, &x->startpos);
+	floatinlet_new(&x->x_obj, &x->endpos);
+	return (x);
+}
+
+static void vdrawarray_destroy(t_vdrawarray *x)
+{
+	if(x->membits!=NULL) smfree(&x->hbits, x->membits);
+	if(x->memvf!=NULL) smfree(&x->hvf, x->memvf);
+}
+
+void vdrawarray_setup(void)
+{
+	vdrawarray_class = class_new(gensym("vdrawarray"),
+	 (t_newmethod)vdrawarray_new, (t_method)vdrawarray_destroy,
+	 sizeof(t_vdrawarray), 0, A_DEFSYM, 0);
+	class_addfloat(vdrawarray_class, (t_method)vdrawarray_float);
+	class_addbang(vdrawarray_class, (t_method)vdrawarray_bang);
+	class_addmethod(vdrawarray_class, (t_method)vdrawarray_set, gensym("set"), A_DEFSYM, 0);
+}
-- 
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