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More drawing tests.

This commit is contained in:
Pietro Gagliardi 2015-10-10 13:01:48 -04:00
parent 0a59910d91
commit 87e51487f6
2 changed files with 299 additions and 58 deletions
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355
test/drawtests.c
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@ -127,64 +127,10 @@ static void drawOriginal(uiAreaDrawParams *p)
sp.MiterLimit = uiDrawDefaultMiterLimit;
uiDrawStroke(p->Context, path, &brush, &sp);
uiDrawFreePath(path);
// based on https://msdn.microsoft.com/en-us/library/windows/desktop/dd756682%28v=vs.85%29.aspx
path = uiDrawNewPath(uiDrawFillModeWinding);
#define XO 50
#define YO 250
uiDrawPathNewFigure(path, 0 + XO, 0 + YO);
uiDrawPathLineTo(path, 200 + XO, 0 + YO);
uiDrawPathBezierTo(path,
150 + XO, 50 + YO,
150 + XO, 150 + YO,
200 + XO, 200 + YO);
uiDrawPathLineTo(path, 0 + XO, 200 + YO);
uiDrawPathBezierTo(path,
50 + XO, 150 + YO,
50 + XO, 50 + YO,
0 + XO, 0 + YO);
uiDrawPathCloseFigure(path);
uiDrawPathEnd(path);
// first the stroke
brush.Type = uiDrawBrushTypeSolid;
brush.R = 0;
brush.G = 0;
brush.B = 0;
brush.A = 1;
sp.Cap = uiDrawLineCapFlat;
sp.Join = uiDrawLineJoinMiter;
sp.MiterLimit = uiDrawDefaultMiterLimit;
sp.Thickness = 10;
uiDrawStroke(p->Context, path, &brush, &sp);
// and now the fill
{
uiDrawBrushGradientStop stops[2];
stops[0].Pos = 0.0;
stops[0].R = 0.0;
stops[0].G = 1.0;
stops[0].B = 1.0;
stops[0].A = 0.25;
stops[1].Pos = 1.0;
stops[1].R = 0.0;
stops[1].G = 0.0;
stops[1].B = 1.0;
stops[1].A = 1.0;
brush.Type = uiDrawBrushTypeLinearGradient;
brush.X0 = 100 + XO;
brush.Y0 = 0 + YO;
brush.X1 = 100 + XO;
brush.Y1 = 200 + YO;
brush.Stops = stops;
brush.NumStops = 2;
uiDrawFill(p->Context, path, &brush);
}
#undef YO
#undef XO
uiDrawFreePath(path);
}
// TODO test quadrants 2 and 4 and the other axes
// TODO test negative start angles too
static void drawArcs(uiAreaDrawParams *p)
{
uiDrawPath *path;
@ -293,7 +239,7 @@ static void drawArcs(uiAreaDrawParams *p)
uiDrawFreePath(path);
}
// Direct2D Examples
// Direct2D Documentation Code
static void d2dColorToRGB(uint32_t color, double *r, double *g, double *b)
{
@ -714,7 +660,298 @@ static void drawD2DPathGeometries(uiAreaDrawParams *p)
// TODO https://msdn.microsoft.com/en-us/library/windows/desktop/dd756690%28v=vs.85%29.aspx
// note: up to https://msdn.microsoft.com/en-us/library/windows/desktop/dd756681%28v=vs.85%29.aspx
// from https://msdn.microsoft.com/en-us/library/windows/desktop/dd756681%28v=vs.85%29.aspx
static void drawD2DGeometryGroup(uiAreaDrawParams *p)
{
uiDrawPath *alternate;
uiDrawPath *winding;
uiDrawBrush fill;
uiDrawBrush stroke;
uiDrawStrokeParams sp;
alternate = uiDrawNewPath(uiDrawFillModeAlternate);
uiDrawPathNewFigureWithArc(alternate,
105, 105,
25,
0, 2 * M_PI);
uiDrawPathNewFigureWithArc(alternate,
105, 105,
50,
0, 2 * M_PI);
uiDrawPathNewFigureWithArc(alternate,
105, 105,
75,
0, 2 * M_PI);
uiDrawPathNewFigureWithArc(alternate,
105, 105,
100,
0, 2 * M_PI);
uiDrawPathEnd(alternate);
winding = uiDrawNewPath(uiDrawFillModeWinding);
uiDrawPathNewFigureWithArc(winding,
105, 105,
25,
0, 2 * M_PI);
uiDrawPathNewFigureWithArc(winding,
105, 105,
50,
0, 2 * M_PI);
uiDrawPathNewFigureWithArc(winding,
105, 105,
75,
0, 2 * M_PI);
uiDrawPathNewFigureWithArc(winding,
105, 105,
100,
0, 2 * M_PI);
uiDrawPathEnd(winding);
d2dClear(p, d2dWhite, 1.0);
// TODO grid
// TODO the example doesn't provide these
d2dSolidBrush(&fill, d2dForestGreen, 1.0);
d2dSolidBrush(&stroke, d2dCornflowerBlue, 1.0);
sp.Thickness = 1.0;
sp.Cap = uiDrawLineCapFlat;
sp.Join = uiDrawLineJoinMiter;
sp.MiterLimit = uiDrawDefaultMiterLimit;
uiDrawFill(p->Context, alternate, &fill);
uiDrawStroke(p->Context, alternate, &stroke, &sp);
// TODO text
// TODO transform
// uiDrawFill(p->Context, winding, &fill);
// uiDrawStroke(p->Context, winding, &stroke, &sp);
// // TODO text
uiDrawFreePath(winding);
uiDrawFreePath(alternate);
}
// TODO https://msdn.microsoft.com/en-us/library/windows/desktop/dd756676%28v=vs.85%29.aspx
// TODO? https://msdn.microsoft.com/en-us/library/windows/desktop/dd370971%28v=vs.85%29.aspx
// TODO are there even examples here? https://msdn.microsoft.com/en-us/library/windows/desktop/dd370966%28v=vs.85%29.aspx
// TODO this entire section (transforms) https://msdn.microsoft.com/en-us/library/windows/desktop/dd756769%28v=vs.85%29.aspx
// TODO https://msdn.microsoft.com/en-us/library/windows/desktop/dd756675%28v=vs.85%29.aspx
// TODO https://msdn.microsoft.com/en-us/library/windows/desktop/dd756673%28v=vs.85%29.aspx
// TODO https://msdn.microsoft.com/en-us/library/windows/desktop/dd756684%28v=vs.85%29.aspx
// TODO dashing https://msdn.microsoft.com/en-us/library/windows/desktop/dd756683%28v=vs.85%29.aspx
// from https://msdn.microsoft.com/en-us/library/windows/desktop/dd756682%28v=vs.85%29.aspx
static void drawD2DComplexShape(uiAreaDrawParams *p)
{
uiDrawPath *path;
uiDrawBrush black;
uiDrawBrush gradient;
uiDrawBrushGradientStop stops[2];
uiDrawStrokeParams sp;
path = uiDrawNewPath(uiDrawFillModeWinding);
uiDrawPathNewFigure(path, 0, 0);
uiDrawPathLineTo(path, 200, 0);
uiDrawPathBezierTo(path,
150, 50,
150, 150,
200, 200);
uiDrawPathLineTo(path, 0, 200);
uiDrawPathBezierTo(path,
50, 150,
50, 50,
0, 0);
uiDrawPathCloseFigure(path);
uiDrawPathEnd(path);
d2dSolidBrush(&black, d2dBlack, 1.0);
stops[0].Pos =0.0;
stops[0].R = 0.0;
stops[0].G = 1.0;
stops[0].B = 1.0;
stops[0].A = 0.25;
stops[1].Pos = 1.0;
stops[1].R = 0.0;
stops[1].G = 0.0;
stops[1].B = 1.0;
stops[1].A = 1.0;
gradient.Type = uiDrawBrushTypeLinearGradient;
gradient.X0 = 100;
gradient.Y0 = 0;
gradient.X1 = 100;
gradient.Y1 = 200;
gradient.Stops = stops;
gradient.NumStops = 2;
// TODO transform
sp.Thickness = 10.0;
sp.Cap = uiDrawLineCapFlat;
sp.Join = uiDrawLineJoinMiter;
sp.MiterLimit = uiDrawDefaultMiterLimit;
uiDrawStroke(p->Context, path, &black, &sp);
uiDrawFill(p->Context, path, &gradient);
uiDrawFreePath(path);
}
// TODO https://msdn.microsoft.com/en-us/library/windows/desktop/dd756692%28v=vs.85%29.aspx
// TODO https://msdn.microsoft.com/en-us/library/windows/desktop/dd756686%28v=vs.85%29.aspx
// TODO https://msdn.microsoft.com/en-us/library/windows/desktop/dd756685%28v=vs.85%29.aspx
// TODO https://msdn.microsoft.com/en-us/library/windows/desktop/dd756674%28v=vs.85%29.aspx
// TODO? https://msdn.microsoft.com/en-us/library/windows/desktop/ee329947%28v=vs.85%29.aspx
// TODO https://msdn.microsoft.com/en-us/library/windows/desktop/ff485857%28v=vs.85%29.aspx
// TODO? https://msdn.microsoft.com/en-us/library/windows/desktop/dd756755%28v=vs.85%29.aspx
// TODO go through the API reference and spot examples that aren't listed
// TODO all of these https://msdn.microsoft.com/en-us/library/windows/desktop/dd368187%28v=vs.85%29.aspx
// cairo Samples Page (http://cairographics.org/samples/)
static void crsourcergba(uiDrawBrush *brush, double r, double g, double b, double a)
{
brush->Type = uiDrawBrushTypeSolid;
brush->R = r;
brush->G = g;
brush->B = b;
brush->A = a;
}
// arc
static void drawCSArc(uiAreaDrawParams *p)
{
double xc = 128.0;
double yc = 128.0;
double radius = 100.0;
// these are clockwise, not counterclockwise
double angle1 = 45.0 * (M_PI / 180.0);
double angle2 = 180.0 * (M_PI / 180.0);
uiDrawBrush source;
uiDrawStrokeParams sp;
uiDrawPath *path;
crsourcergba(&source, 0, 0, 0, 1);
sp.Cap = uiDrawLineCapFlat;
sp.Join = uiDrawLineJoinMiter;
sp.MiterLimit = uiDrawDefaultMiterLimit;
sp.Thickness = 10.0;
path = uiDrawNewPath(uiDrawFillModeWinding);
uiDrawPathNewFigureWithArc(path,
xc, yc,
radius,
angle2,
M_PI - angle1);
uiDrawPathEnd(path);
uiDrawStroke(p->Context, path, &source, &sp);
uiDrawFreePath(path);
crsourcergba(&source, 1, 0.2, 0.2, 0.6);
sp.Thickness = 6.0;
path = uiDrawNewPath(uiDrawFillModeWinding);
uiDrawPathNewFigureWithArc(path,
xc, yc,
10.0,
0, 2 * M_PI);
uiDrawPathEnd(path);
uiDrawFill(p->Context, path, &source);
uiDrawFreePath(path);
path = uiDrawNewPath(uiDrawFillModeWinding);
uiDrawPathNewFigureWithArc(path,
xc, yc,
radius,
(M_PI - angle1) + angle2, 0);
uiDrawPathLineTo(path, xc, yc);
uiDrawPathNewFigureWithArc(path,
xc, yc,
radius,
angle2, 0);
uiDrawPathLineTo(path, xc, yc);
uiDrawPathEnd(path);
uiDrawStroke(p->Context, path, &source, &sp);
uiDrawFreePath(path);
}
// arc negative
static void drawCSArcNegative(uiAreaDrawParams *p)
{
double xc = 128.0;
double yc = 128.0;
double radius = 100.0;
// these are clockwise, not counterclockwise
double angle1 = 45.0 * (M_PI / 180.0);
double angle2 = 180.0 * (M_PI / 180.0);
uiDrawBrush source;
uiDrawStrokeParams sp;
uiDrawPath *path;
crsourcergba(&source, 0, 0, 0, 1);
sp.Cap = uiDrawLineCapFlat;
sp.Join = uiDrawLineJoinMiter;
sp.MiterLimit = uiDrawDefaultMiterLimit;
sp.Thickness = 10.0;
path = uiDrawNewPath(uiDrawFillModeWinding);
uiDrawPathNewFigureWithArc(path,
xc, yc,
radius,
-angle1,
angle1 + angle2);
uiDrawPathEnd(path);
uiDrawStroke(p->Context, path, &source, &sp);
uiDrawFreePath(path);
crsourcergba(&source, 1, 0.2, 0.2, 0.6);
sp.Thickness = 6.0;
path = uiDrawNewPath(uiDrawFillModeWinding);
uiDrawPathNewFigureWithArc(path,
xc, yc,
10.0,
0, 2 * M_PI);
uiDrawPathEnd(path);
uiDrawFill(p->Context, path, &source);
uiDrawFreePath(path);
path = uiDrawNewPath(uiDrawFillModeWinding);
uiDrawPathNewFigureWithArc(path,
xc, yc,
radius,
(M_PI - angle1) + angle2, 0);
uiDrawPathLineTo(path, xc, yc);
uiDrawPathNewFigureWithArc(path,
xc, yc,
radius,
angle2, 0);
uiDrawPathLineTo(path, xc, yc);
uiDrawPathEnd(path);
uiDrawStroke(p->Context, path, &source, &sp);
uiDrawFreePath(path);
}
// TODO clip
// TODO clip image
static const struct drawtest tests[] = {
{ "Original uiArea test", drawOriginal },
@ -725,6 +962,10 @@ static const struct drawtest tests[] = {
{ "Direct2D: How to Create a Linear Gradient Brush", drawD2DLinearBrush },
{ "Direct2D: How to Create a Radial Gradient Brush", drawD2DRadialBrush },
{ "Direct2D: Path Geometries Overview", drawD2DPathGeometries },
{ "Direct2D: How to Create Geometry Groups", drawD2DGeometryGroup },
{ "Direct2D: How to Draw and Fill a Complex Shape", drawD2DComplexShape },
{ "cairo samples: arc", drawCSArc },
{ "cairo samples: arc negative", drawCSArcNegative },
{ NULL, NULL },
};

2
ui.h
View File

@ -322,7 +322,7 @@ enum uiDrawLineJoin {
uiDrawLineJoinBevel,
};
// this is the default for botoh cairo and GDI
// this is the default for botoh cairo and Direct2D (in the latter case, from the C++ helper functions)
// Core Graphics doesn't explicitly specify a default, but NSBezierPath allows you to choose one, and this is the initial value
// so we're good to use it too!
#define uiDrawDefaultMiterLimit 10.0