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C++ cairo_rotate函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中cairo_rotate函数的典型用法代码示例。如果您正苦于以下问题：C++ cairo_rotate函数的具体用法？C++ cairo_rotate怎么用？C++ cairo_rotate使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了cairo_rotate函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: add_label

static void
add_label (struct chart *c,
	   int		 test,
	   const char	*label)
{
    cairo_text_extents_t extents;
    double dx, x;

    cairo_save (c->cr);
    dx = c->width / (double) c->num_tests;
    if (dx / 2 - PAD < 4)
	return;
    cairo_set_font_size (c->cr, dx / 2 - PAD);
    cairo_text_extents (c->cr, label, &extents);

    cairo_set_source_rgb (c->cr, .5, .5, .5);

    x = (test + .5) * dx;
    cairo_save (c->cr);
    cairo_translate (c->cr, x, c->height - PAD / 2);
    cairo_rotate (c->cr, -M_PI/2);
    cairo_move_to (c->cr, 0, -extents.y_bearing/2);
    cairo_show_text (c->cr, label);
    cairo_restore (c->cr);

    cairo_save (c->cr);
    cairo_translate (c->cr, x, PAD / 2);
    cairo_rotate (c->cr, -M_PI/2);
    cairo_move_to (c->cr, -extents.width, -extents.y_bearing/2);
    cairo_show_text (c->cr, label);
    cairo_restore (c->cr);

    cairo_restore (c->cr);
}
开发者ID:GuoCheng111，项目名称:WinCairoRequirements，代码行数:34，代码来源:cairo-perf-chart.c


示例2: add_rectangle

static void
add_rectangle (cairo_t *cr, double size)
{
    double x, y;

    if (size < 1)
	return;

    cairo_get_current_point (cr, &x, &y);

    cairo_rel_move_to (cr, -size/2., -size/2.);
    cairo_rel_line_to (cr, size, 0);
    cairo_rel_line_to (cr, 0, size);
    cairo_rel_line_to (cr, -size, 0);
    cairo_close_path (cr);

    cairo_save (cr);
    cairo_translate (cr, -size/2., size);
    cairo_move_to (cr, x, y);
    cairo_rotate (cr, M_PI/4);
    add_rectangle (cr, size / M_SQRT2);
    cairo_restore (cr);

    cairo_save (cr);
    cairo_translate (cr, size/2., size);
    cairo_move_to (cr, x, y);
    cairo_rotate (cr, -M_PI/4);
    add_rectangle (cr, size / M_SQRT2);
    cairo_restore (cr);
}
开发者ID:AliYousuf，项目名称:cairo，代码行数:30，代码来源:pythagoras-tree.c


示例3: match

void match(unsigned int position)
{
//     cairo_set_line_cap(cairoOut, CAIRO_LINE_CAP_ROUND);
    
    m_sensorReference.seek(position);
    cairo_matrix_t m1;
    cairo_get_matrix(cairoOut, &m1);
    cairo_identity_matrix(cairoOut);
    cairo_set_source_surface(cairoOut, cairo_get_target(cairoMap), 0., 0.);
    cairo_paint(cairoOut);
    cairo_set_matrix(cairoOut, &m1);
//     cairo_set_line_width(cairoOut, 1./(2.*scaleFactor));
    
    std::vector<InterestPoint *> pointsLocal(m_pointsReference[position].size());
    const LaserReading* lreadReference = dynamic_cast<const LaserReading*>(m_sensorReference.current());
    for(unsigned int j = 0; j < m_pointsReference[position].size(); j++){
	InterestPoint * point = new InterestPoint(*m_pointsReference[position][j]);
	point->setPosition(lreadReference->getLaserPose().ominus(point->getPosition()));
	pointsLocal[j] = point;
    }
    
    
    for(unsigned int i = 0; i < m_pointsReference.size(); i++){
	if(i == position) {
	    continue;
	}
	OrientedPoint2D transform;
	std::vector< std::pair<InterestPoint*, InterestPoint* > > correspondences;
	double result = m_ransac->matchSets(m_pointsReference[i], pointsLocal, transform, correspondences);
	if(correspondences.size() >= corresp) {
	    cairo_matrix_t m;
	    cairo_get_matrix(cairoOut, &m);
	    cairo_translate(cairoOut, transform.x, transform.y);
	    cairo_rotate(cairoOut, transform.theta);
	    
	    cairo_set_source_rgba(cairoOut, 1., 0., 0., 1. - result/(acceptanceSigma * acceptanceSigma * 5.99 * double(pointsLocal.size())));
	    cairo_move_to(cairoOut, 0., -0.3);
	    cairo_line_to(cairoOut, 0.6, 0.);
	    cairo_line_to(cairoOut, 0., 0.3);
	    cairo_close_path(cairoOut);
	    cairo_fill(cairoOut);
	    cairo_set_matrix(cairoOut, &m);
	}
    }
    
    cairo_matrix_t m;
    cairo_get_matrix(cairoOut, &m);
    cairo_translate(cairoOut, lreadReference->getLaserPose().x, lreadReference->getLaserPose().y);
    cairo_rotate(cairoOut, lreadReference->getLaserPose().theta);
    cairo_set_source_rgba(cairoOut, 0., 0., 1., 1.);
    cairo_move_to(cairoOut, 0., -0.3);
    cairo_line_to(cairoOut, 0.6, 0.);
    cairo_line_to(cairoOut, 0., 0.3);
    cairo_close_path(cairoOut);
    cairo_stroke(cairoOut);
    cairo_set_matrix(cairoOut, &m);
//     cairo_show_page(cairoOut);
}
开发者ID:artivis，项目名称:flirtlib，代码行数:58，代码来源:RansacLoopClosureDrawMovie.cpp


示例4: cairo_create

void BenchCairo::runFillRectRotate(BenchOutput& output, const BenchParams& params)
{
  cairo_t* cr = cairo_create(screenCairo);
  configureContext(cr, params);

  BenchRandom rRect(app);
  BenchRandom rArgb(app);

  float cx = (float)params.screenSize.w * 0.5f;
  float cy = (float)params.screenSize.h * 0.5f;
  float angle = 0.0f;

  if (params.source == BENCH_SOURCE_SOLID)
  {
    uint32_t i, quantity = params.quantity;
    for (i = 0; i < quantity; i++, angle += 0.01f)
    {
      Fog::RectF r(rRect.getRectF(params.screenSize, params.shapeSize, params.shapeSize));
      Fog::Argb32 c0(rArgb.getArgb32());

      cairo_translate(cr, cx, cy);
      cairo_rotate(cr, angle);
      cairo_translate(cr, -cx, -cy);

      cairo_set_source_rgba(cr, double(c0.r) * sc, double(c0.g) * sc, double(c0.b) * sc, double(c0.a) * sc);
      cairo_rectangle(cr, r.x, r.y, r.w, r.h);
      cairo_fill(cr);

      cairo_identity_matrix(cr);
    }
  }
  else
  {
    uint32_t i, quantity = params.quantity;
    for (i = 0; i < quantity; i++, angle += 0.01f)
    {
      Fog::RectF r(rRect.getRectF(params.screenSize, params.shapeSize, params.shapeSize));
      Fog::Argb32 c0(rArgb.getArgb32());
      Fog::Argb32 c1(rArgb.getArgb32());
      Fog::Argb32 c2(rArgb.getArgb32());

      cairo_translate(cr, cx, cy);
      cairo_rotate(cr, angle);
      cairo_translate(cr, -cx, -cy);

      cairo_pattern_t* pattern = createLinearGradient(r.x, r.y, r.x + r.w, r.y + r.h, c0, c1, c2);
      cairo_set_source(cr, pattern);

      cairo_rectangle(cr, r.x, r.y, r.w, r.h);
      cairo_fill(cr);

      cairo_identity_matrix(cr);
      cairo_pattern_destroy(pattern);
    }
  }

  cairo_destroy(cr);
}
开发者ID:Lewerow，项目名称:DetailIdentifier，代码行数:58，代码来源:BenchCairo.cpp


示例5: handle_apply

			void handle_apply(render_context& ctx) override {
				if(std::abs(cx_) < DBL_EPSILON && std::abs(cy_) < DBL_EPSILON) {
					cairo_rotate(ctx.cairo(), angle_);
				} else {
					cairo_translate(ctx.cairo(), cx_, cy_);
					cairo_rotate(ctx.cairo(), angle_);
					cairo_translate(ctx.cairo(), -cx_, -cy_);
				}
			}
开发者ID:sweetkristas，项目名称:mercy，代码行数:9，代码来源:svg_transform.cpp


示例6: cairo_image_surface_create

	void TriangleMarkerImpl::DrawSymbol()
	{
		m_icon = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, m_size*2, m_size*2);
		m_cairo = cairo_create(m_icon);

		size_t count = sizeof(g_auge_marker_triangle_points) / sizeof(double) / 2;
		double offset_x=0, offset_y=0;		
		double cx=m_size;
		double cy=m_size;
		double x, y;
		double size_2 = m_size / 2.0f;

		cairo_new_path(m_cairo);

		cairo_translate (m_cairo, cx, cy);
		//cairo_scale(m_cairo,10,10);
		cairo_rotate (m_cairo, m_rotation*PI/180.0f);
		
		x = g_auge_marker_triangle_points[0][0];
		y = g_auge_marker_triangle_points[0][1];
		cairo_move_to(m_cairo, x*size_2, y*size_2);
		for(size_t i=1; i<count; i++)
		{
			x = g_auge_marker_triangle_points[i][0];
			y = g_auge_marker_triangle_points[i][1];
			cairo_line_to(m_cairo, x*size_2, y*size_2);
		}
		cairo_close_path(m_cairo);

		cairo_rotate (m_cairo, m_rotation*PI/180.0f);
		if(m_pFill!=NULL)
		{
			GColor& color = m_pFill->GetColor();
			cairo_set_source_rgba(m_cairo, color.GetRedF(), color.GetGreenF(), color.GetBlueF(), color.GetAlphaF());
			if(m_pStroke==NULL)
			{
				cairo_fill(m_cairo);
			}
			else
			{
				cairo_fill_preserve(m_cairo);
			}
		}
		if(m_pStroke!=NULL)
		{
			set_stroke_style(m_cairo, m_pStroke);
			cairo_stroke(m_cairo);
		}
		//cairo_surface_write_to_png(m_icon, "G:\\temp\\map\\icon.png");
	}
开发者ID:marsprj，项目名称:Auge.GIS，代码行数:50，代码来源:TriangleMarkerImpl.cpp


示例7: gtk_css_image_builtin_draw_arrow

static void
gtk_css_image_builtin_draw_arrow (GtkCssImage            *image,
                                  cairo_t                *cr,
                                  double                  width,
                                  double                  height,
                                  GtkCssImageBuiltinType  image_type)
{
  GtkCssImageBuiltin *builtin = GTK_CSS_IMAGE_BUILTIN (image);
  double line_width;
  double size;

  size = MIN (width, height);

  cairo_translate (cr, width / 2.0, height / 2.0);
  switch (image_type)
  {
    case GTK_CSS_IMAGE_BUILTIN_ARROW_UP:
      break;
    case GTK_CSS_IMAGE_BUILTIN_ARROW_DOWN:
      cairo_rotate (cr, G_PI);
      break;
    case GTK_CSS_IMAGE_BUILTIN_ARROW_LEFT:
      cairo_rotate (cr, 3 * G_PI / 2);
      break;
    case GTK_CSS_IMAGE_BUILTIN_ARROW_RIGHT:
      cairo_rotate (cr, G_PI / 2);
      break;
    default:
      g_assert_not_reached ();
      break;
  }

  line_width = size / 3.0 / sqrt (2);
  cairo_set_line_width (cr, line_width);
  cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
  cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);

  cairo_scale (cr,
               (size / (size + line_width)),
               (size / (size + line_width)));

  cairo_move_to (cr, -size / 2.0, size / 4.0);
  cairo_rel_line_to (cr, size / 2.0, -size / 2.0);
  cairo_rel_line_to (cr, size / 2.0, size / 2.0);

  gdk_cairo_set_source_rgba (cr, &builtin->fg_color);
  cairo_stroke (cr);
}
开发者ID:Distrotech，项目名称:gtk，代码行数:48，代码来源:gtkcssimagebuiltin.c


示例8: draw

static void
draw (TboObjectBase *self, Frame *frame, cairo_t *cr)
{
    TboObjectPixmap *pixmap = TBO_OBJECT_PIXMAP (self);
    int w, h;
    cairo_surface_t *image;
    GdkPixbuf *pixbuf;
    GError *error = NULL;
    char path[255];

    tbo_files_expand_path (pixmap->path->str, path);
    pixbuf = gdk_pixbuf_new_from_file (path, &error);

    if (!pixbuf) {
        g_warning ("There's a problem here: %s", error->message);
        return;
    }

    w = gdk_pixbuf_get_width (pixbuf);
    h = gdk_pixbuf_get_height (pixbuf);

    if (!self->width) self->width = w;
    if (!self->height) self->height = h;

    float factorw = (float)self->width / (float)w;
    float factorh = (float)self->height / (float)h;

    cairo_matrix_t mx = {1, 0, 0, 1, 0, 0};
    tbo_object_base_get_flip_matrix (self, &mx);

    cairo_rectangle(cr, frame->x+2, frame->y+2, frame->width-4, frame->height-4);
    cairo_clip (cr);
    cairo_translate (cr, frame->x+self->x, frame->y+self->y);
    cairo_rotate (cr, self->angle);
    cairo_transform (cr, &mx);
    cairo_scale (cr, factorw, factorh);

    gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
    cairo_paint (cr);

    cairo_scale (cr, 1/factorw, 1/factorh);
    cairo_transform (cr, &mx);
    cairo_rotate (cr, -self->angle);
    cairo_translate (cr, -(frame->x+self->x), -(frame->y+self->y));
    cairo_reset_clip (cr);

    cairo_surface_destroy (image);
}
开发者ID:FranciscoJRA，项目名称:TBO，代码行数:48，代码来源:tbo-object-pixmap.c


示例9: draw_arrow

static void
draw_arrow (GOArrow const *arrow, cairo_t *cr, GOStyle *style,
	    double *endx, double *endy, double phi)
{
	double l, w;

	if (arrow->typ == GO_ARROW_NONE)
		return;

	l = hypot (*endx, *endy);
	w = style->line.width ? style->line.width / 2.0 : 0.5;

	switch (arrow->typ) {
	case GO_ARROW_KITE:
		cairo_save (cr);
		cairo_translate (cr, (int) *endx, (int) *endy);
		cairo_rotate (cr, phi);
		cairo_move_to (cr, -arrow->a, w);
		cairo_line_to (cr, -arrow->b, w + arrow->c);
		cairo_line_to (cr, 0., 0.);
		cairo_line_to (cr, -arrow->b, -w - arrow->c);
		cairo_line_to (cr, -arrow->a, -w);
		cairo_close_path (cr);
		cairo_set_source_rgba (cr, GO_COLOR_TO_CAIRO (style->line.color));
		cairo_fill (cr);
		cairo_restore (cr);
		if (l > 0.) {
			(*endx) -= arrow->a * *endx / l;
			(*endy) -= arrow->a * *endy / l;
		} else
			*endx = *endy = 0.;
		break;

	case GO_ARROW_OVAL:
		cairo_save (cr);
		cairo_translate (cr, *endx, *endy);
		cairo_rotate (cr, phi);
		cairo_scale (cr, arrow->a, arrow->b);
		cairo_arc (cr, 0., 0., 1., 0., 2 * M_PI);
		cairo_set_source_rgba (cr, GO_COLOR_TO_CAIRO (style->line.color));
		cairo_fill (cr);
		cairo_restore (cr);
		break;

	default:
		g_assert_not_reached ();
	}
}
开发者ID:UIKit0，项目名称:goffice，代码行数:48，代码来源:goc-line.c


示例10: cr_rotate

static VALUE
cr_rotate (VALUE self, VALUE radians)
{
  cairo_rotate (_SELF, NUM2DBL (radians));
  cr_check_status (_SELF);
  return self;
}
开发者ID:exvayn，项目名称:cairo-1.8.1-i386，代码行数:7，代码来源:rb_cairo_context.c


示例11: do_wide_fills

static cairo_time_t
do_wide_fills (cairo_t *cr, int width, int height, int loops)
{
    int count;

    /* lots and lots of overlapping stroke-like fills */
    state = 0xc0ffee;
    for (count = 0; count < 1000; count++) {
	cairo_save (cr);
	cairo_translate (cr,
			 uniform_random (0, width),
			 uniform_random (0, height));
	cairo_rotate (cr, uniform_random (-M_PI,M_PI));
	cairo_rectangle (cr, 0, 0, uniform_random (0, width), 5);
	cairo_restore (cr);
    }

    cairo_perf_timer_start ();

    while (loops--)
	cairo_fill_preserve (cr);

    cairo_perf_timer_stop ();

    cairo_new_path (cr);

    return cairo_perf_timer_elapsed ();
}
开发者ID:AZed，项目名称:cairo，代码行数:28，代码来源:wide-fills.c


示例12: goc_component_draw

static void
goc_component_draw (GocItem const *item, cairo_t *cr)
{
	GocComponent *component = GOC_COMPONENT (item);
	GocCanvas *canvas = item->canvas;
	double x0, y0 = component->y;
	if (goc_canvas_get_direction (item->canvas) == GOC_DIRECTION_RTL) {
		x0 = component->x + component->w;
		goc_group_adjust_coords (item->parent, &x0, &y0);
		x0 = canvas->width - (int) (x0 - canvas->scroll_x1);
	} else {
		x0 = component->x;
		goc_group_adjust_coords (item->parent, &x0, &y0);
		x0 = (int) (x0 - canvas->scroll_x1);
	}
	cairo_save (cr);
	_goc_item_transform (item, cr, TRUE);
	if (component->rotation == 0.)
		cairo_translate (cr, x0,
			         (int) (y0 - canvas->scroll_y1));
	else {
		cairo_translate (cr, x0 + component->w / 2,
			         (int) (y0 - canvas->scroll_y1 + component->h / 2));
		cairo_rotate (cr, -component->rotation);
		cairo_translate (cr, -component->w / 2, -component->h / 2);
	}
	cairo_rectangle (cr, 0., 0., component->w,
	                     component->h);
	cairo_clip (cr);
	go_component_render (component->component, cr,
	                     component->w,
	                     component->h);
	cairo_restore (cr);
}
开发者ID:GNOME，项目名称:goffice，代码行数:34，代码来源:goc-component.c


示例13: renderSVGSymbolCairo

int renderSVGSymbolCairo(imageObj *img, double x, double y, symbolObj *symbol,
                         symbolStyleObj *style)
{
#ifdef USE_SVG_CAIRO
    cairo_renderer *r = CAIRO_RENDERER(img);
    //double ox=symbol->sizex*0.5,oy=symbol->sizey*0.5;

    svg_cairo_status_t status;
    struct svg_symbol_cache *cache;

    msPreloadSVGSymbol(symbol);
    assert(symbol->renderer_cache);
    cache = symbol->renderer_cache;

    cairo_save(r->cr);
    cairo_translate(r->cr,x,y);
    cairo_scale(r->cr,style->scale,style->scale);

    if (style->rotation != 0) {
        cairo_rotate(r->cr, -style->rotation);
        cairo_translate (r->cr, -(int)(symbol->sizex/2), -(int)(symbol->sizey/2));
    } else
        cairo_translate (r->cr, -(int)(symbol->sizex/2), -(int)(symbol->sizey/2));

    status = svg_cairo_render(cache->svgc, r->cr);
    cairo_restore(r->cr);
    return MS_SUCCESS;

#else
    msSetError(MS_MISCERR, "SVG Symbols requested but is not built with libsvgcairo",
               "renderSVGSymbolCairo()");
    return MS_FAILURE;
#endif
}
开发者ID:embeepea，项目名称:mapserver，代码行数:34，代码来源:mapcairo.c


示例14: draw

static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
    cairo_pattern_t *source;
    int surface_size = sqrt ((SIZE - 2*PAD)*(SIZE - 2*PAD)/2);

    /* Use a gray (neutral) background, so we can spot if the backend pads
     * with any other colour.
     */
    cairo_set_source_rgb (cr, .5, .5, .5);
    cairo_paint (cr);

    cairo_translate(cr, SIZE/2, SIZE/2);
    cairo_rotate (cr, M_PI / 4.0);
    cairo_translate (cr, -surface_size/2, -surface_size/2);

    source = create_image_source (surface_size);
    cairo_pattern_set_filter (source, CAIRO_FILTER_NEAREST);
    cairo_set_source(cr, source);
    cairo_pattern_destroy (source);

    cairo_paint (cr);

    return CAIRO_TEST_SUCCESS;
}
开发者ID:499940913，项目名称:moon，代码行数:25，代码来源:rotate-image-surface-paint.c


示例15: cairo_rotate

void GraphicsContext::rotate(float radians)
{
    if (paintingDisabled())
        return;

    cairo_rotate(m_data->cr, radians);
}
开发者ID:jackiekaon，项目名称:owb-mirror，代码行数:7，代码来源:GraphicsContextCairo.cpp


示例16: shapes

static void
shapes (cairo_t *cr)
{
    cairo_set_source_rgb (cr, 1, 0, 0);
    cairo_paint (cr);

    cairo_set_source_rgb (cr, 0, 0.7, 0);
    cairo_arc (cr, 10, 10, 7.5, 0, 2 * M_PI);
    cairo_stroke (cr);

    cairo_set_source_rgb (cr, 0, 0.7, 0.7);
    cairo_arc (cr, 10, 10, 25, 0, 2 * M_PI);
    cairo_stroke (cr);
    cairo_rectangle (cr, -5, -5, 30, 30);
    cairo_stroke (cr);

    cairo_set_source_rgb (cr, 0.7, 0.7, 0);
    cairo_save (cr);
    cairo_translate (cr, 10, 10);
    cairo_rotate (cr, M_PI/4);
    cairo_translate (cr, -10, -10);
    cairo_rectangle (cr, -5, -5, 30, 30);
    cairo_stroke (cr);
    cairo_restore (cr);

    cairo_set_source_rgb (cr, 0.7, 0.0, 0.7);
    cairo_move_to (cr, 15, -10);
    cairo_line_to (cr, 30, 10);
    cairo_line_to (cr, 15, 30);
    cairo_stroke (cr);
}
开发者ID:ghub，项目名称:NVprSDK，代码行数:31，代码来源:clip-stroke.c


示例17: cairo_get_matrix

void address_histogram::render_bars(cairo_t *cr, const plot::bounds_t &bounds)
{
    if(top_addrs.size() < 1 || top_addrs.at(0).count == 0) {
        return;
    }

    cairo_matrix_t original_matrix;

    cairo_get_matrix(cr, &original_matrix);
    cairo_translate(cr, bounds.x, bounds.y);

    double offset_unit = bounds.width / top_addrs.size();
    double bar_width = offset_unit / bar_space_factor;
    double space_width = offset_unit - bar_width;
    uint64_t greatest = top_addrs.at(0).count;
    int index = 0;

    for(vector<iptree::addr_elem>::const_iterator it = top_addrs.begin();
            it != top_addrs.end(); it++) {
	double bar_height = (((double) it->count) / ((double) greatest)) * bounds.height;

	if(bar_height > 0) {
            // bar
            double bar_x = index * offset_unit + space_width;
            double bar_y = bounds.height - bar_height;

            cairo_set_source_rgb(cr, bar_color.r, bar_color.g, bar_color.b);
            cairo_rectangle(cr, bar_x, bar_y, bar_width, bar_height);
            cairo_fill(cr);

            // bar label
            std::string label = it->str();

            // IP6 labels are half size since they're (potentially) much longer
            if(it->is4()) {
                cairo_set_font_size(cr, bar_label_font_size);
            }
            else {
                cairo_set_font_size(cr, bar_label_font_size / 2.0);
            }

            cairo_text_extents_t label_extents;
            cairo_text_extents(cr, label.c_str(), &label_extents);

            cairo_move_to(cr, bar_x + bar_width / 2.0, bar_y);

            cairo_matrix_t unrotated_matrix;
            cairo_get_matrix(cr, &unrotated_matrix);
            cairo_rotate(cr, -M_PI / 4.0);

            cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
            cairo_show_text(cr, label.c_str());

            cairo_set_matrix(cr, &unrotated_matrix);
	}
	index++;
    }

    cairo_set_matrix(cr, &original_matrix);
}
开发者ID:admckinnon，项目名称:tcpflow，代码行数:60，代码来源:address_histogram.cpp


示例18: draw_grid

static void
draw_grid (cairo_t *cr, cairo_pattern_t *pattern, int dst_x, int dst_y)
{
    cairo_matrix_t m;

    cairo_save (cr);
    cairo_translate (cr, dst_x, dst_y);
    cairo_scale (cr, 16, 16);
    cairo_rotate (cr, 1);

    cairo_matrix_init_translate (&m, 2560-4, 1280-4);
    cairo_pattern_set_matrix (pattern, &m);
    cairo_set_source (cr, pattern);
    cairo_rectangle (cr, 0, 0, 4, 4);
    cairo_fill (cr);

    cairo_set_source_rgb (cr, .7, .7, .7);
    cairo_set_line_width (cr, 1./16);
    cairo_move_to (cr, 0, 0);
    cairo_line_to (cr, 4, 0);
    cairo_move_to (cr, 0, 2);
    cairo_line_to (cr, 4, 2);
    cairo_move_to (cr, 0, 4);
    cairo_line_to (cr, 4, 4);
    cairo_move_to (cr, 0, 0);
    cairo_line_to (cr, 0, 4);
    cairo_move_to (cr, 2, 0);
    cairo_line_to (cr, 2, 4);
    cairo_move_to (cr, 4, 0);
    cairo_line_to (cr, 4, 4);
    cairo_stroke (cr);

    cairo_restore (cr);
}
开发者ID:AliYousuf，项目名称:cairo，代码行数:34，代码来源:scale-offset-similar.c


示例19: img_nordic_triangle_x

static void img_nordic_triangle_x(cairo_t* cr,
		float val,
		const float _xc, const float _yc,
		const float _r2, const float scale) {
	float  c, s;
	if (val < 0.00f) val = 0.00f;
	if (val > 1.05f) val = 1.05f;
	val = (val - 0.5f) * 1.5708f;
	c = cosf (val);
	s = sinf (val);

	cairo_save(cr);
	cairo_translate (cr, _xc + s * _r2, _yc - c * _r2);
	cairo_rotate (cr, val);
	cairo_move_to (cr,  0.0, 10.0 * scale);
	cairo_line_to (cr,  6.9282 * scale,  -2.0 * scale);
	cairo_line_to (cr, -6.9282 * scale,  -2.0 * scale);
	cairo_close_path(cr);
	cairo_set_line_width (cr, 1.2 * scale);

	CairoSetSouerceRGBA(c_nrd);
	cairo_fill_preserve (cr);
	CairoSetSouerceRGBA(c_wht);
	cairo_stroke (cr);
	cairo_restore(cr);
}
开发者ID:EQ4，项目名称:meters.lv2，代码行数:26，代码来源:meterimage.c


示例20: cairo_image_surface_create

void *msCreateTileEllipseCairo(double width, double height, double angle,
                               colorObj *c, colorObj *bc, colorObj *oc, double ow) {
    double s = (MS_MAX(width,height)+ow)*1.5;
    cairo_surface_t *surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
                                                           s,s);
    cairo_t *cr = cairo_create(surface);
    //cairo_set_line_cap(cr, CAIRO_LINE_CAP_ROUND);
    //cairo_set_line_join(cr, CAIRO_LINE_JOIN_ROUND);
    if (bc && MS_VALID_COLOR(*bc)) {
        msCairoSetSourceColor(cr, bc);
        cairo_paint(cr);
    }
    cairo_save(cr);
    cairo_translate(cr,s/2,s/2);
    cairo_rotate(cr, -angle);
    cairo_scale(cr, width/2,height/2);
    cairo_arc(cr, 0, 0, 1, 0, 2 * MS_PI);
    cairo_restore(cr);
    if (c != NULL && MS_VALID_COLOR(*c)) {
        msCairoSetSourceColor(cr, c);
        cairo_fill_preserve(cr);
    }
    if (oc != NULL && MS_VALID_COLOR(*oc)) {
        cairo_set_line_width(cr, ow);
        msCairoSetSourceColor(cr, oc);
        cairo_stroke_preserve(cr);
    }
    cairo_new_path(cr);
    cairo_destroy(cr);
    return surface;

}
开发者ID:msilex，项目名称:mapserver，代码行数:32，代码来源:mapcairo.c



注：本文中的cairo_rotate函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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