From 045f63cbeb581c5d2d4fa35d45396a888ed28f89 Mon Sep 17 00:00:00 2001 From: johanengelen Date: Thu, 21 Sep 2006 22:25:16 +0000 Subject: [PATCH] AXONOMETRIC (3D) GRID! OK, still alot of work to be done. Snapping, diagonal guides, 0-degree angle axes, user-input checking, emphasis lines, optimizing, ... try and find as many bugs as possible :P Or just look at it playing with the angles of the lines, it's pretty cool to look at all by itself :) --- src/attributes-test.h | 3 + src/attributes.cpp | 4 + src/attributes.h | 4 + src/display/Makefile_insert | 2 + src/display/canvas-axonomgrid.cpp | 469 ++++++++++++++++++++++++++ src/display/canvas-axonomgrid.h | 59 ++++ src/sp-namedview.cpp | 94 ++++-- src/sp-namedview.h | 5 + src/ui/dialog/document-properties.cpp | 19 ++ src/ui/dialog/document-properties.h | 4 +- 10 files changed, 642 insertions(+), 21 deletions(-) create mode 100644 src/display/canvas-axonomgrid.cpp create mode 100644 src/display/canvas-axonomgrid.h diff --git a/src/attributes-test.h b/src/attributes-test.h index f0db48ad0..1e413c90f 100644 --- a/src/attributes-test.h +++ b/src/attributes-test.h @@ -402,6 +402,7 @@ struct {char const *attr; bool supported;} const all_attrs[] = { /* SPNamedView */ {"viewonly", true}, {"showgrid", true}, + {"gridtype", true}, {"showguides", true}, {"gridtolerance", true}, {"guidetolerance", true}, @@ -411,6 +412,8 @@ struct {char const *attr; bool supported;} const all_attrs[] = { {"gridoriginy", true}, {"gridspacingx", true}, {"gridspacingy", true}, + {"gridanglex", true}, + {"gridanglez", true}, {"gridcolor", true}, {"gridopacity", true}, {"gridempcolor", true}, diff --git a/src/attributes.cpp b/src/attributes.cpp index 867e5989c..f02e9b28f 100644 --- a/src/attributes.cpp +++ b/src/attributes.cpp @@ -7,6 +7,7 @@ * Author: * Lauris Kaplinski * + * Copyright (C) 2006 Johan Engelen * Copyright (C) 2002 Lauris Kaplinski * * Released under GNU GPL, read the file 'COPYING' for more information @@ -59,6 +60,7 @@ static SPStyleProp const props[] = { /* SPNamedView */ {SP_ATTR_VIEWONLY, "viewonly"}, {SP_ATTR_SHOWGRID, "showgrid"}, + {SP_ATTR_GRIDTYPE, "gridtype"}, {SP_ATTR_SHOWGUIDES, "showguides"}, {SP_ATTR_GRIDTOLERANCE, "gridtolerance"}, {SP_ATTR_GUIDETOLERANCE, "guidetolerance"}, @@ -68,6 +70,8 @@ static SPStyleProp const props[] = { {SP_ATTR_GRIDORIGINY, "gridoriginy"}, {SP_ATTR_GRIDSPACINGX, "gridspacingx"}, {SP_ATTR_GRIDSPACINGY, "gridspacingy"}, + {SP_ATTR_GRIDANGLEX, "gridanglex"}, + {SP_ATTR_GRIDANGLEZ, "gridanglez"}, {SP_ATTR_GRIDCOLOR, "gridcolor"}, {SP_ATTR_GRIDOPACITY, "gridopacity"}, {SP_ATTR_GRIDEMPCOLOR, "gridempcolor"}, diff --git a/src/attributes.h b/src/attributes.h index 5ef817e49..242c5c246 100644 --- a/src/attributes.h +++ b/src/attributes.h @@ -8,6 +8,7 @@ * Author: * Lauris Kaplinski * + * Copyright (C) 2006 Johan Engelen * Copyright (C) 2002 Lauris Kaplinski * * Released under GNU GPL, read the file 'COPYING' for more information @@ -60,6 +61,7 @@ enum SPAttributeEnum { /* SPNamedView */ SP_ATTR_VIEWONLY, SP_ATTR_SHOWGRID, + SP_ATTR_GRIDTYPE, SP_ATTR_SHOWGUIDES, SP_ATTR_GRIDTOLERANCE, SP_ATTR_GUIDETOLERANCE, @@ -69,6 +71,8 @@ enum SPAttributeEnum { SP_ATTR_GRIDORIGINY, SP_ATTR_GRIDSPACINGX, SP_ATTR_GRIDSPACINGY, + SP_ATTR_GRIDANGLEX, + SP_ATTR_GRIDANGLEZ, SP_ATTR_GRIDCOLOR, SP_ATTR_GRIDOPACITY, SP_ATTR_GRIDEMPCOLOR, diff --git a/src/display/Makefile_insert b/src/display/Makefile_insert index 6d38c1593..a6cecaffb 100644 --- a/src/display/Makefile_insert +++ b/src/display/Makefile_insert @@ -36,6 +36,8 @@ display_libspdisplay_a_SOURCES = \ display/canvas-bpath.h \ display/canvas-grid.cpp \ display/canvas-grid.h \ + display/canvas-axonomgrid.cpp \ + display/canvas-axonomgrid.h \ display/curve.cpp \ display/curve.h \ display/display-forward.h \ diff --git a/src/display/canvas-axonomgrid.cpp b/src/display/canvas-axonomgrid.cpp new file mode 100644 index 000000000..909ebdcda --- /dev/null +++ b/src/display/canvas-axonomgrid.cpp @@ -0,0 +1,469 @@ +#define SP_CANVAS_AXONOMGRID_C + +/* + * SPCAxonomGrid + * + * Copyright (C) 2006 Johan Engelen + * Copyright (C) 2000 Lauris Kaplinski + * + */ + + /* + * Current limits are: one axis (y-axis) is always vertical. The other two + * axes are bound to a certain range of angles. The z-axis always has an angle + * smaller than 90 degrees (measured from horizontal, 0 degrees being a line extending + * to the right). The x-axis will always have an angle between 0 and 90 degrees. + * When I quickly think about it: all possibilities are probably covered this way. Eg. + * a z-axis with negative angle can be replaced with an x-axis, etc. + */ + + /* + * TODO: LOTS LOTS LOTS. Optimization etc. + * + */ + +#include "sp-canvas-util.h" +#include "canvas-axonomgrid.h" +#include "display-forward.h" +#include + +#define SAFE_SETPIXEL //undefine this when it is certain that setpixel is never called with invalid params + +enum { + ARG_0, + ARG_ORIGINX, + ARG_ORIGINY, + ARG_ANGLEX, + ARG_SPACINGY, + ARG_ANGLEZ, + ARG_COLOR, + ARG_EMPCOLOR, + ARG_EMPSPACING +}; + +enum Dim3 { X=0, Y, Z }; + +#ifndef M_PI +#define M_PI 3.14159265358979323846 +#endif + +static double deg_to_rad(double deg) { return deg*M_PI/180.0;} + + +static void sp_caxonomgrid_class_init (SPCAxonomGridClass *klass); +static void sp_caxonomgrid_init (SPCAxonomGrid *grid); +static void sp_caxonomgrid_destroy (GtkObject *object); +static void sp_caxonomgrid_set_arg (GtkObject *object, GtkArg *arg, guint arg_id); + +static void sp_caxonomgrid_update (SPCanvasItem *item, NR::Matrix const &affine, unsigned int flags); +static void sp_caxonomgrid_render (SPCanvasItem *item, SPCanvasBuf *buf); + +static SPCanvasItemClass * parent_class; + +GtkType +sp_caxonomgrid_get_type (void) +{ + static GtkType caxonomgrid_type = 0; + + if (!caxonomgrid_type) { + GtkTypeInfo caxonomgrid_info = { + "SPCAxonomGrid", + sizeof (SPCAxonomGrid), + sizeof (SPCAxonomGridClass), + (GtkClassInitFunc) sp_caxonomgrid_class_init, + (GtkObjectInitFunc) sp_caxonomgrid_init, + NULL, NULL, + (GtkClassInitFunc) NULL + }; + caxonomgrid_type = gtk_type_unique (sp_canvas_item_get_type (), &caxonomgrid_info); + } + return caxonomgrid_type; +} + +static void +sp_caxonomgrid_class_init (SPCAxonomGridClass *klass) +{ + + GtkObjectClass *object_class; + SPCanvasItemClass *item_class; + + object_class = (GtkObjectClass *) klass; + item_class = (SPCanvasItemClass *) klass; + + parent_class = (SPCanvasItemClass*)gtk_type_class (sp_canvas_item_get_type ()); + + gtk_object_add_arg_type ("SPCAxonomGrid::originx", GTK_TYPE_DOUBLE, GTK_ARG_WRITABLE, ARG_ORIGINX); + gtk_object_add_arg_type ("SPCAxonomGrid::originy", GTK_TYPE_DOUBLE, GTK_ARG_WRITABLE, ARG_ORIGINY); + gtk_object_add_arg_type ("SPCAxonomGrid::anglex", GTK_TYPE_DOUBLE, GTK_ARG_WRITABLE, ARG_ANGLEX); + gtk_object_add_arg_type ("SPCAxonomGrid::spacingy", GTK_TYPE_DOUBLE, GTK_ARG_WRITABLE, ARG_SPACINGY); + gtk_object_add_arg_type ("SPCAxonomGrid::anglez", GTK_TYPE_DOUBLE, GTK_ARG_WRITABLE, ARG_ANGLEZ); + gtk_object_add_arg_type ("SPCAxonomGrid::color", GTK_TYPE_INT, GTK_ARG_WRITABLE, ARG_COLOR); + gtk_object_add_arg_type ("SPCAxonomGrid::empcolor", GTK_TYPE_INT, GTK_ARG_WRITABLE, ARG_EMPCOLOR); + gtk_object_add_arg_type ("SPCAxonomGrid::empspacing", GTK_TYPE_INT, GTK_ARG_WRITABLE, ARG_EMPSPACING); + + object_class->destroy = sp_caxonomgrid_destroy; + object_class->set_arg = sp_caxonomgrid_set_arg; + + item_class->update = sp_caxonomgrid_update; + item_class->render = sp_caxonomgrid_render; + +} + +static void +sp_caxonomgrid_init (SPCAxonomGrid *grid) +{ + grid->origin[NR::X] = grid->origin[NR::Y] = 0.0; +// grid->spacing[X] = grid->spacing[Y] = grid->spacing[Z] = 8.0; + grid->color = 0x0000ff7f; + grid->empcolor = 0x3F3FFF40; + grid->empspacing = 5; +} + +static void +sp_caxonomgrid_destroy (GtkObject *object) +{ + g_return_if_fail (object != NULL); + g_return_if_fail (SP_IS_CAXONOMGRID (object)); + + if (GTK_OBJECT_CLASS (parent_class)->destroy) + (* GTK_OBJECT_CLASS (parent_class)->destroy) (object); +} + +static void +sp_caxonomgrid_set_arg (GtkObject *object, GtkArg *arg, guint arg_id) +{ + SPCanvasItem *item = SP_CANVAS_ITEM (object); + SPCAxonomGrid *grid = SP_CAXONOMGRID (object); + + g_message("arg"); + + switch (arg_id) { + case ARG_ORIGINX: + grid->origin[NR::X] = GTK_VALUE_DOUBLE (* arg); + sp_canvas_item_request_update (item); + break; + case ARG_ORIGINY: + grid->origin[NR::Y] = GTK_VALUE_DOUBLE (* arg); + sp_canvas_item_request_update (item); + break; + case ARG_ANGLEX: + grid->angle_deg[X] = GTK_VALUE_DOUBLE (* arg); + if (grid->angle_deg[X] < 0.0) grid->angle_deg[X] = 0.0; + grid->angle_rad[X] = deg_to_rad(grid->angle_deg[X]); + grid->tan_angle[X] = tan(grid->angle_rad[X]); + sp_canvas_item_request_update (item); + break; + case ARG_SPACINGY: + grid->lengthy = GTK_VALUE_DOUBLE (* arg); + if (grid->lengthy < 0.01) grid->lengthy = 0.01; + sp_canvas_item_request_update (item); + break; + case ARG_ANGLEZ: + grid->angle_deg[Z] = GTK_VALUE_DOUBLE (* arg); + if (grid->angle_deg[Z] < 0.0) grid->angle_deg[Z] = 0.0; + grid->angle_rad[Z] = deg_to_rad(grid->angle_deg[Z]); + grid->tan_angle[Z] = tan(grid->angle_rad[Z]); + sp_canvas_item_request_update (item); + break; + case ARG_COLOR: + grid->color = GTK_VALUE_INT (* arg); + sp_canvas_item_request_update (item); + break; + case ARG_EMPCOLOR: + grid->empcolor = GTK_VALUE_INT (* arg); + sp_canvas_item_request_update (item); + break; + case ARG_EMPSPACING: + grid->empspacing = GTK_VALUE_INT (* arg); + // std::cout << "Emphasis Spacing: " << grid->empspacing << std::endl; + sp_canvas_item_request_update (item); + break; + default: + break; + } +} + + + +/** + \brief This function renders a pixel on a particular buffer. + + The topleft of the buffer equals + ( rect.x0 , rect.y0 ) in screen coordinates + ( 0 , 0 ) in setpixel coordinates + The bottomright of the buffer equals + ( rect.x1 , rect,y1 ) in screen coordinates + ( rect.x1 - rect.x0 , rect.y1 - rect.y0 ) in setpixel coordinates +*/ +static void +sp_caxonomgrid_setpixel (SPCanvasBuf *buf, gint x, gint y, guint32 rgba) { +#ifdef SAFE_SETPIXEL + if ( (x >= buf->rect.x0) && (x < buf->rect.x1) && (y >= buf->rect.y0) && (y < buf->rect.y1) ) { +#endif + guint r, g, b, a; + r = NR_RGBA32_R (rgba); + g = NR_RGBA32_G (rgba); + b = NR_RGBA32_B (rgba); + a = NR_RGBA32_A (rgba); + guchar * p = buf->buf + (y - buf->rect.y0) * buf->buf_rowstride + (x - buf->rect.x0) * 3; + p[0] = NR_COMPOSEN11_1111 (r, a, p[0]); + p[1] = NR_COMPOSEN11_1111 (g, a, p[1]); + p[2] = NR_COMPOSEN11_1111 (b, a, p[2]); +#ifdef SAFE_SETPIXEL + } +#endif +} + +/** + \brief This function renders a line on a particular canvas buffer, + using Bresenham's line drawing function. + http://www.cs.unc.edu/~mcmillan/comp136/Lecture6/Lines.html + Coordinates are interpreted as SCREENcoordinates +*/ +static void +sp_caxonomgrid_drawline (SPCanvasBuf *buf, gint x0, gint y0, gint x1, gint y1, guint32 rgba) { + int dy = y1 - y0; + int dx = x1 - x0; + int stepx, stepy; + + if (dy < 0) { dy = -dy; stepy = -1; } else { stepy = 1; } + if (dx < 0) { dx = -dx; stepx = -1; } else { stepx = 1; } + dy <<= 1; // dy is now 2*dy + dx <<= 1; // dx is now 2*dx + + sp_caxonomgrid_setpixel(buf, x0, y0, rgba); + if (dx > dy) { + int fraction = dy - (dx >> 1); // same as 2*dy - dx + while (x0 != x1) { + if (fraction >= 0) { + y0 += stepy; + fraction -= dx; // same as fraction -= 2*dx + } + x0 += stepx; + fraction += dy; // same as fraction -= 2*dy + sp_caxonomgrid_setpixel(buf, x0, y0, rgba); + } + } else { + int fraction = dx - (dy >> 1); + while (y0 != y1) { + if (fraction >= 0) { + x0 += stepx; + fraction -= dy; + } + y0 += stepy; + fraction += dx; + sp_caxonomgrid_setpixel(buf, x0, y0, rgba); + } + } + +} + +static void +sp_grid_vline (SPCanvasBuf *buf, gint x, gint ys, gint ye, guint32 rgba) +{ + if ((x >= buf->rect.x0) && (x < buf->rect.x1)) { + guint r, g, b, a; + gint y0, y1, y; + guchar *p; + r = NR_RGBA32_R(rgba); + g = NR_RGBA32_G (rgba); + b = NR_RGBA32_B (rgba); + a = NR_RGBA32_A (rgba); + y0 = MAX (buf->rect.y0, ys); + y1 = MIN (buf->rect.y1, ye + 1); + p = buf->buf + (y0 - buf->rect.y0) * buf->buf_rowstride + (x - buf->rect.x0) * 3; + for (y = y0; y < y1; y++) { + p[0] = NR_COMPOSEN11_1111 (r, a, p[0]); + p[1] = NR_COMPOSEN11_1111 (g, a, p[1]); + p[2] = NR_COMPOSEN11_1111 (b, a, p[2]); + p += buf->buf_rowstride; + } + } +} + +/** + \brief This function renders the grid on a particular canvas buffer + \param item The grid to render on the buffer + \param buf The buffer to render the grid on + + This function gets called a touch more than you might believe, + about once per tile. This means that it could probably be optimized + and help things out. + + Basically this function has to determine where in the canvas it is, + and how that associates with the grid. It does this first by looking + at the bounding box of the buffer, and then calculates where the grid + starts in that buffer. It will then step through grid lines until + it is outside of the buffer. + + For each grid line it is drawn using the function \c sp_grid_hline + or \c sp_grid_vline. These are convience functions for the sake + of making the function easier to read. + + Also, there are emphasized lines on the grid. While the \c syg and + \c sxg variable track grid positioning, the \c xlinestart and \c + ylinestart variables track the 'count' of what lines they are. If + that count is a multiple of the line seperation between emphasis + lines, then that line is drawn in the emphasis color. +*/ +static void +sp_caxonomgrid_render (SPCanvasItem * item, SPCanvasBuf * buf) +{ + SPCAxonomGrid *grid = SP_CAXONOMGRID (item); + + sp_canvas_prepare_buffer (buf); + + // gc = gridcoordinates (the coordinates calculated from the grids origin 'grid->ow'. + // sc = screencoordinates ( for example "buf->rect.x0" is in screencoordinates ) + // bc = buffer patch coordinates + + // tl = topleft ; br = bottomright + NR::Point buf_tl_gc; + NR::Point buf_br_gc; + buf_tl_gc[NR::X] = buf->rect.x0 - grid->ow[NR::X]; + buf_tl_gc[NR::Y] = buf->rect.y0 - grid->ow[NR::Y]; + buf_br_gc[NR::X] = buf->rect.x1 - grid->ow[NR::X]; + buf_br_gc[NR::Y] = buf->rect.y1 - grid->ow[NR::Y]; + + + gdouble x; + gdouble y; + + // render the three separate line groups representing the main-axes: + // x-axis always goes from topleft to bottomright. (0,0) - (1,1) + const gdouble xintercept_y_bc = (buf_tl_gc[NR::X] * grid->tan_angle[X]) - buf_tl_gc[NR::Y] ; + const gdouble xstart_y_sc = ( xintercept_y_bc - floor(xintercept_y_bc/grid->lyw)*grid->lyw ) + buf->rect.y0; + const gint xlinestart = (gint) Inkscape::round( (xstart_y_sc - grid->ow[NR::Y]) / grid->lyw ); + gint xlinenum; + // lijnen vanaf linker zijkant. + for (y = xstart_y_sc, xlinenum = xlinestart; y < buf->rect.y1; y += grid->lyw, xlinenum++) { + const gint x0 = buf->rect.x0; + const gint y0 = (gint) Inkscape::round(y); + const gint x1 = x0 + (gint) Inkscape::round( (buf->rect.y1 - y) / grid->tan_angle[X] ); + const gint y1 = buf->rect.y1; + + if (!grid->scaled && (xlinenum % grid->empspacing) == 0) { + sp_caxonomgrid_drawline (buf, x0, y0, x1, y1, grid->empcolor); + } else { + sp_caxonomgrid_drawline (buf, x0, y0, x1, y1, grid->color); + } + } + // lijnen vanaf bovenkant. + const gdouble xstart_x_sc = buf->rect.x0 + (grid->lxw_x - (xstart_y_sc - buf->rect.y0) / grid->tan_angle[X]) ; + for (x = xstart_x_sc, xlinenum = xlinestart; x < buf->rect.x1; x += grid->lxw_x, xlinenum--) { + const gint y0 = buf->rect.y0; + const gint y1 = buf->rect.y1; + const gint x0 = (gint) Inkscape::round(x); + const gint x1 = x0 + (gint) Inkscape::round( (y1 - y0) / grid->tan_angle[X] ); + + if (!grid->scaled && (xlinenum % grid->empspacing) == 0) { + sp_caxonomgrid_drawline (buf, x0, y0, x1, y1, grid->empcolor); + } else { + sp_caxonomgrid_drawline (buf, x0, y0, x1, y1, grid->color); + } + } + + + // y-axis lines (vertical) + const gdouble ystart_x_sc = floor (buf_tl_gc[NR::X] / grid->spacing_ylines) * grid->spacing_ylines + grid->ow[NR::X]; + const gint ylinestart = (gint) Inkscape::round((ystart_x_sc - grid->ow[NR::X]) / grid->spacing_ylines); + gint ylinenum; + for (x = ystart_x_sc, ylinenum = ylinestart; x < buf->rect.x1; x += grid->spacing_ylines, ylinenum++) { + const gint x0 = (gint) Inkscape::round(x); + + if (!grid->scaled && (ylinenum % grid->empspacing) == 0) { + sp_grid_vline (buf, x0, buf->rect.y0, buf->rect.y1 - 1, grid->empcolor); + } else { + sp_grid_vline (buf, x0, buf->rect.y0, buf->rect.y1 - 1, grid->color); + } + } + + // z-axis always goes from bottomleft to topright. (0,1) - (1,0) + const gdouble zintercept_y_bc = (buf_tl_gc[NR::X] * -grid->tan_angle[Z]) - buf_tl_gc[NR::Y] ; + const gdouble zstart_y_sc = ( zintercept_y_bc - floor(zintercept_y_bc/grid->lyw)*grid->lyw ) + buf->rect.y0; + const gint zlinestart = (gint) Inkscape::round( (zstart_y_sc - grid->ow[NR::Y]) / grid->lyw ); + gint zlinenum; + // lijnen vanaf linker zijkant. + for (y = zstart_y_sc, zlinenum = zlinestart; y < buf->rect.y1; y += grid->lyw, zlinenum++) { + const gint x0 = buf->rect.x0; + const gint y0 = (gint) Inkscape::round(y); + const gint x1 = x0 + (gint) Inkscape::round( (y - buf->rect.y0 ) / grid->tan_angle[Z] ); + const gint y1 = buf->rect.y0; + + if (!grid->scaled && (zlinenum % grid->empspacing) == 0) { + sp_caxonomgrid_drawline (buf, x0, y0, x1, y1, grid->empcolor); + } else { + sp_caxonomgrid_drawline (buf, x0, y0, x1, y1, grid->color); + } + } + // lijnen vanaf onderkant. + const gdouble zstart_x_sc = buf->rect.x0 + (y - buf->rect.y1) / grid->tan_angle[Z] ; + for (x = zstart_x_sc; x < buf->rect.x1; x += grid->lxw_z, zlinenum--) { + const gint y0 = buf->rect.y1; + const gint y1 = buf->rect.y0; + const gint x0 = (gint) Inkscape::round(x); + const gint x1 = x0 + (gint) Inkscape::round( (buf->rect.y1 - buf->rect.y0) / grid->tan_angle[Z] ); + + if (!grid->scaled && (zlinenum % grid->empspacing) == 0) { + sp_caxonomgrid_drawline (buf, x0, y0, x1, y1, grid->empcolor); + } else { + sp_caxonomgrid_drawline (buf, x0, y0, x1, y1, grid->color); + } + } + +} + +static void +sp_caxonomgrid_update (SPCanvasItem *item, NR::Matrix const &affine, unsigned int flags) +{ + SPCAxonomGrid *grid = SP_CAXONOMGRID (item); + + if (parent_class->update) + (* parent_class->update) (item, affine, flags); + + grid->ow = grid->origin * affine; + grid->sw = NR::Point(fabs(affine[0]),fabs(affine[3])); + + for(int dim = 0; dim < 2; dim++) { + gint scaling_factor = grid->empspacing; + + if (scaling_factor <= 1) + scaling_factor = 5; + + grid->scaled = FALSE; + while (grid->sw[dim] < 8.0) { + grid->scaled = TRUE; + grid->sw[dim] *= scaling_factor; + // First pass, go up to the major line spacing, then + // keep increasing by two. + scaling_factor = 2; + } + } + + grid->spacing_ylines = grid->sw[NR::X] * grid->lengthy /(grid->tan_angle[X] + grid->tan_angle[Z]); + grid->lyw = grid->lengthy * grid->sw[NR::Y]; + grid->lxw_x = (grid->lengthy / grid->tan_angle[X]) * grid->sw[NR::X]; + grid->lxw_z = (grid->lengthy / grid->tan_angle[Z]) * grid->sw[NR::X]; + + if (grid->empspacing == 0) { + grid->scaled = TRUE; + } + + sp_canvas_request_redraw (item->canvas, + -1000000, -1000000, + 1000000, 1000000); + + item->x1 = item->y1 = -1000000; + item->x2 = item->y2 = 1000000; +} + +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 : diff --git a/src/display/canvas-axonomgrid.h b/src/display/canvas-axonomgrid.h new file mode 100644 index 000000000..22fceed44 --- /dev/null +++ b/src/display/canvas-axonomgrid.h @@ -0,0 +1,59 @@ +#ifndef SP_CANVAS_AXONOMGRID_H +#define SP_CANVAS_AXONOMGRID_H + +/* + * SPCAxonomGrid + * + * Generic (and quite unintelligent) modified copy of the grid item for gnome canvas + * + * Copyright (C) 2006 Johan Engelen + * Copyright (C) 2000 Lauris Kaplinski 2000 + * + */ + +#include +#include + + +#define SP_TYPE_CAXONOMGRID (sp_caxonomgrid_get_type ()) +#define SP_CAXONOMGRID(obj) (GTK_CHECK_CAST ((obj), SP_TYPE_CAXONOMGRID, SPCAxonomGrid)) +#define SP_CAXONOMGRID_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), SP_TYPE_CAXONOMGRID, SPCAxonomGridClass)) +#define SP_IS_CAXONOMGRID(obj) (GTK_CHECK_TYPE ((obj), SP_TYPE_CAXONOMGRID)) +#define SP_IS_CAXONOMGRID_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), SP_TYPE_CAXONOMGRID)) + + +/** \brief All the variables that are tracked for a axonometric grid specific + canvas item. */ +struct SPCAxonomGrid : public SPCanvasItem{ + NR::Point origin; /**< Origin of the grid */ + double lengthy; /**< The lengths of the primary y-axis */ + double angle_deg[3]; /**< Angle of each axis (note that angle[2] == 0) */ + double angle_rad[3]; /**< Angle of each axis (note that angle[2] == 0) */ + double tan_angle[3]; /**< tan(angle[.]) */ + guint32 color; /**< Color for normal lines */ + guint32 empcolor; /**< Color for emphasis lines */ + gint empspacing; /**< Spacing between emphasis lines */ + bool scaled; /**< Whether the grid is in scaled mode */ + + NR::Point ow; /**< Transformed origin by the affine for the zoom */ + double lyw; /**< Transformed length y by the affine for the zoom */ + double lxw_x; + double lxw_z; + double spacing_ylines; + + NR::Point sw; /**< the scaling factors of the affine transform */ +}; + +struct SPCAxonomGridClass { + SPCanvasItemClass parent_class; +}; + + +/* Standard Gtk function */ +GtkType sp_caxonomgrid_get_type (void); + + + +#endif + + diff --git a/src/sp-namedview.cpp b/src/sp-namedview.cpp index 9c36b5057..54805f872 100644 --- a/src/sp-namedview.cpp +++ b/src/sp-namedview.cpp @@ -7,6 +7,7 @@ * Lauris Kaplinski * bulia byak * + * Copyright (C) 2006 Johan Engelen * Copyright (C) 1999-2005 Authors * Copyright (C) 2000-2001 Ximian, Inc. * @@ -16,6 +17,7 @@ #include "config.h" #include "display/canvas-grid.h" +#include "display/canvas-axonomgrid.h" #include "helper/units.h" #include "svg/svg-color.h" #include "xml/repr.h" @@ -107,6 +109,7 @@ static void sp_namedview_init(SPNamedView *nv) { nv->editable = TRUE; nv->showgrid = FALSE; + nv->gridtype = 0; nv->showguides = TRUE; nv->showborder = TRUE; nv->showpageshadow = TRUE; @@ -133,6 +136,7 @@ static void sp_namedview_build(SPObject *object, SPDocument *document, Inkscape: sp_object_read_attr(object, "inkscape:document-units"); sp_object_read_attr(object, "viewonly"); sp_object_read_attr(object, "showgrid"); + sp_object_read_attr(object, "gridtype"); sp_object_read_attr(object, "showguides"); sp_object_read_attr(object, "gridtolerance"); sp_object_read_attr(object, "guidetolerance"); @@ -142,6 +146,8 @@ static void sp_namedview_build(SPObject *object, SPDocument *document, Inkscape: sp_object_read_attr(object, "gridoriginy"); sp_object_read_attr(object, "gridspacingx"); sp_object_read_attr(object, "gridspacingy"); + sp_object_read_attr(object, "gridanglex"); + sp_object_read_attr(object, "gridanglez"); sp_object_read_attr(object, "gridempspacing"); sp_object_read_attr(object, "gridcolor"); sp_object_read_attr(object, "gridempcolor"); @@ -226,6 +232,11 @@ static void sp_namedview_set(SPObject *object, unsigned int key, const gchar *va nv->snap_manager.grid.setEnabled(nv->showgrid); object->requestModified(SP_OBJECT_MODIFIED_FLAG); break; + case SP_ATTR_GRIDTYPE: + nv->gridtype = sp_str_to_bool(value); + sp_namedview_setup_grid(nv); + object->requestModified(SP_OBJECT_MODIFIED_FLAG); + break; case SP_ATTR_SHOWGUIDES: if (!value) { // show guides if not specified, for backwards compatibility nv->showguides = TRUE; @@ -294,6 +305,18 @@ static void sp_namedview_set(SPObject *object, unsigned int key, const gchar *va object->requestModified(SP_OBJECT_MODIFIED_FLAG); break; } + case SP_ATTR_GRIDANGLEX: + case SP_ATTR_GRIDANGLEZ: + { + unsigned const d = (key == SP_ATTR_GRIDANGLEZ); // 0=X 1=Z + nv->gridangle[d] = 30; // 30 deg default + if (value) { + nv->gridangle[d] = g_ascii_strtod(value, NULL); + } + sp_namedview_setup_grid(nv); + object->requestModified(SP_OBJECT_MODIFIED_FLAG); + break; + } case SP_ATTR_GRIDCOLOR: nv->gridcolor = (nv->gridcolor & 0xff) | (DEFAULTGRIDCOLOR & 0xffffff00); if (value) { @@ -616,11 +639,17 @@ void SPNamedView::show(SPDesktop *desktop) views = g_slist_prepend(views, desktop); - SPCanvasItem *item = sp_canvas_item_new(sp_desktop_grid(desktop), SP_TYPE_CGRID, NULL); + SPCanvasItem * item = sp_canvas_item_new(sp_desktop_grid(desktop), SP_TYPE_CGRID, NULL); + // since we're keeping a copy, we need to bump up the ref count + gtk_object_ref(GTK_OBJECT(item)); + gridviews = g_slist_prepend(gridviews, item); + + item = sp_canvas_item_new(sp_desktop_grid(desktop), SP_TYPE_CAXONOMGRID, NULL); // since we're keeping a copy, we need to bump up the ref count gtk_object_ref(GTK_OBJECT(item)); gridviews = g_slist_prepend(gridviews, item); - sp_namedview_setup_grid_item(this, item); + + sp_namedview_setup_grid(this); } /* @@ -723,15 +752,11 @@ void SPNamedView::hide(SPDesktop const *desktop) GSList *l; for (l = gridviews; l != NULL; l = l->next) { if (SP_CANVAS_ITEM(l->data)->canvas == sp_desktop_canvas(desktop)) { - break; + sp_canvas_item_hide(SP_CANVAS_ITEM(l->data)); + gtk_object_unref(GTK_OBJECT(l->data)); + gridviews = g_slist_remove(gridviews, l->data); } } - - g_assert(l); - - sp_canvas_item_hide(SP_CANVAS_ITEM(l->data)); - gtk_object_unref(GTK_OBJECT(l->data)); - gridviews = g_slist_remove(gridviews, l->data); } void SPNamedView::activateGuides(gpointer desktop, gboolean active) @@ -795,6 +820,17 @@ void sp_namedview_toggle_grid(SPDocument *doc, Inkscape::XML::Node *repr) sp_document_set_undo_sensitive(doc, saved); } +void sp_namedview_set_gridtype(bool type, SPDocument *doc, Inkscape::XML::Node *repr) +{ + bool saved = sp_document_get_undo_sensitive(doc); + sp_document_set_undo_sensitive(doc, false); + + sp_repr_set_boolean(repr, "showgrid", type); + + doc->rroot->setAttribute("sodipodi:modified", "true"); + sp_document_set_undo_sensitive(doc, saved); +} + static void sp_namedview_setup_grid(SPNamedView *nv) { for (GSList *l = nv->gridviews; l != NULL; l = l->next) { @@ -804,23 +840,41 @@ static void sp_namedview_setup_grid(SPNamedView *nv) static void sp_namedview_setup_grid_item(SPNamedView *nv, SPCanvasItem *item) { - if (nv->showgrid) { + bool btype = SP_IS_CAXONOMGRID(GTK_OBJECT(item)); + + if ( nv->showgrid && (nv->gridtype == btype) ) { sp_canvas_item_show(item); } else { sp_canvas_item_hide(item); } - - sp_canvas_item_set((GtkObject *) item, - "color", nv->gridcolor, - "originx", nv->gridorigin[NR::X], - "originy", nv->gridorigin[NR::Y], - "spacingx", nv->gridspacing[NR::X], - "spacingy", nv->gridspacing[NR::Y], - "empcolor", nv->gridempcolor, - "empspacing", nv->gridempspacing, - NULL); + + if (!btype){ + // CGRID + sp_canvas_item_set((GtkObject *) item, + "color", nv->gridcolor, + "originx", nv->gridorigin[NR::X], + "originy", nv->gridorigin[NR::Y], + "spacingx", nv->gridspacing[NR::X], + "spacingy", nv->gridspacing[NR::Y], + "empcolor", nv->gridempcolor, + "empspacing", nv->gridempspacing, + NULL); + } else { + // CAXONOMGRID + sp_canvas_item_set((GtkObject *) item, + "color", nv->gridcolor, + "originx", nv->gridorigin[NR::X], + "originy", nv->gridorigin[NR::Y], + "spacingy", nv->gridspacing[NR::Y], + "anglex", nv->gridangle[0], + "anglez", nv->gridangle[1], + "empcolor", nv->gridempcolor, + "empspacing", nv->gridempspacing, + NULL); + } } + gchar const *SPNamedView::getName() const { SPException ex; diff --git a/src/sp-namedview.h b/src/sp-namedview.h index 54291413e..6625fd027 100644 --- a/src/sp-namedview.h +++ b/src/sp-namedview.h @@ -7,6 +7,7 @@ * Authors: * Lauris Kaplinski * + * Copyright (C) 2006 Johan Engelen * Copyright (C) Lauris Kaplinski 2000-2002 * * Released under GNU GPL, read the file 'COPYING' for more information @@ -32,6 +33,7 @@ enum { struct SPNamedView : public SPObjectGroup { unsigned int editable : 1; unsigned int showgrid : 1; + unsigned int gridtype : 1; // 0=normal 1=axonometric unsigned int showguides : 1; unsigned int showborder : 1; unsigned int showpageshadow : 1; @@ -51,6 +53,7 @@ struct SPNamedView : public SPObjectGroup { /* Grid data is in points regardless of unit */ NR::Point gridorigin; gdouble gridspacing[2]; + gdouble gridangle[2]; // for axonometric grid gint gridempspacing; SPUnit const *doc_units; @@ -81,6 +84,7 @@ struct SPNamedView : public SPObjectGroup { GSList *guides; GSList *views; GSList *gridviews; + gint viewcount; void show(SPDesktop *desktop); @@ -105,6 +109,7 @@ void sp_namedview_document_from_window(SPDesktop *desktop); void sp_namedview_toggle_guides(SPDocument *doc, Inkscape::XML::Node *repr); void sp_namedview_toggle_grid(SPDocument *doc, Inkscape::XML::Node *repr); +void sp_namedview_set_gridtype(bool type, SPDocument *doc, Inkscape::XML::Node *repr); #endif /* !INKSCAPE_SP_NAMEDVIEW_H */ diff --git a/src/ui/dialog/document-properties.cpp b/src/ui/dialog/document-properties.cpp index 726c0ad94..c32ac9f1f 100644 --- a/src/ui/dialog/document-properties.cpp +++ b/src/ui/dialog/document-properties.cpp @@ -9,6 +9,7 @@ * Jon Phillips * Ralf Stephan (Gtkmm) * + * Copyright (C) 2006 Johan Engelen * Copyright (C) 2000 - 2005 Authors * * Released under GNU GPL. Read the file 'COPYING' for more information @@ -231,6 +232,11 @@ DocumentProperties::build_grid() /// Dissenting view: you want snapping without grid. _rcbgrid.init (_("_Show grid"), _("Show or hide grid"), "showgrid", _wr); + _rrb_gridtype.init (_("Grid type:"), _("Normal (2D)"), _("Axonometric (3D)"), + _("The normal grid with vertical and horizontal lines."), + _("A grid with vertical lines and two diagonal line groups, each representing the projection of a primary axis."), + _("gridtype"), _wr); + _rumg.init (_("Grid _units:"), "grid_units", _wr); _rsu_ox.init (_("_Origin X:"), _("X coordinate of grid origin"), "gridoriginx", _rumg, _wr); @@ -240,6 +246,10 @@ DocumentProperties::build_grid() "gridspacingx", _rumg, _wr); _rsu_sy.init (_("Spacing _Y:"), _("Distance of horizontal grid lines"), "gridspacingy", _rumg, _wr); + _rsu_ax.init (_("Angle X:"), _("Angle of x-axis of axonometric grid"), + "gridanglex", _rumg, _wr); + _rsu_az.init (_("Angle Z:"), _("Angle of z-axis of axonometric grid"), + "gridanglez", _rumg, _wr); _rcp_gcol.init (_("Grid line _color:"), _("Grid line color"), _("Color of grid lines"), "gridcolor", "gridopacity", _wr); _rcp_gmcol.init (_("Ma_jor grid line color:"), _("Major grid line color"), @@ -261,11 +271,14 @@ DocumentProperties::build_grid() { label_grid, 0, 0, _rcbgrid._button, + _rrb_gridtype._hbox, 0, _rumg._label, _rumg._sel, 0, _rsu_ox.getSU(), 0, _rsu_oy.getSU(), 0, _rsu_sx.getSU(), 0, _rsu_sy.getSU(), + 0, _rsu_ax.getSU(), + 0, _rsu_az.getSU(), _rcp_gcol._label, _rcp_gcol._cp, 0, 0, _rcp_gmcol._label, _rcp_gmcol._cp, @@ -386,6 +399,7 @@ DocumentProperties::update() //-----------------------------------------------------------grid page _rcbgrid.setActive (nv->showgrid); + _rrb_gridtype.setValue (nv->gridtype); _rumg.setUnit (nv->gridunit); gdouble val; @@ -402,6 +416,11 @@ DocumentProperties::update() double gridy = sp_pixels_get_units (val, *(nv->gridunit)); _rsu_sy.setValue (gridy); + val = nv->gridangle[0]; + _rsu_ax.setValue (val); + val = nv->gridangle[1]; + _rsu_az.setValue (val); + _rcp_gcol.setRgba32 (nv->gridcolor); _rcp_gmcol.setRgba32 (nv->gridempcolor); _rsi.setValue (nv->gridempspacing); diff --git a/src/ui/dialog/document-properties.h b/src/ui/dialog/document-properties.h index ae2c30cbf..0f67508f2 100644 --- a/src/ui/dialog/document-properties.h +++ b/src/ui/dialog/document-properties.h @@ -5,6 +5,7 @@ * Ralf Stephan * Bryce W. Harrington * + * Copyright (C) 2006 Johan Engelen * Copyright (C) 2004, 2005 Authors * * Released under GNU GPL. Read the file 'COPYING' for more information. @@ -61,8 +62,9 @@ protected: PageSizer _page_sizer; //--------------------------------------------------------------- RegisteredCheckButton _rcbgrid, _rcbsnbb, _rcbsnnod; + RegisteredRadioButtonPair _rrb_gridtype; RegisteredUnitMenu _rumg, _rums; - RegisteredScalarUnit _rsu_ox, _rsu_oy, _rsu_sx, _rsu_sy; + RegisteredScalarUnit _rsu_ox, _rsu_oy, _rsu_sx, _rsu_sy, _rsu_ax, _rsu_az; RegisteredColorPicker _rcp_gcol, _rcp_gmcol; RegisteredSuffixedInteger _rsi; //--------------------------------------------------------------- -- 2.30.2