/src/compositor/mpeg4_geometry_ifs2d.c
C | 345 lines | 265 code | 47 blank | 33 comment | 49 complexity | c42e16851044489eed473aad58b45e6f MD5 | raw file
Possible License(s): LGPL-2.1, GPL-2.0
- /*
- * GPAC - Multimedia Framework C SDK
- *
- * Authors: Jean Le Feuvre
- * Copyright (c) Telecom ParisTech 2000-2012
- * All rights reserved
- *
- * This file is part of GPAC / Scene Compositor sub-project
- *
- * GPAC is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * GPAC is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
- #include "nodes_stacks.h"
- #include "visual_manager.h"
- #ifndef GPAC_DISABLE_VRML
- static void ifs2d_check_changes(GF_Node *node, Drawable *stack, GF_TraverseState *tr_state)
- {
- u32 i;
- SFVec2f *pts;
- u32 ci_count, c_count;
- Bool started;
- M_IndexedFaceSet2D *ifs2D;
- M_Coordinate2D *coord;
- if (! gf_node_dirty_get(node)) return;
- ifs2D = (M_IndexedFaceSet2D *)node;
- coord = (M_Coordinate2D *)ifs2D->coord;
- drawable_reset_path(stack);
- gf_node_dirty_clear(node, 0);
- drawable_mark_modified(stack, tr_state);
- c_count = coord->point.count;
- ci_count = ifs2D->coordIndex.count;
- pts = coord->point.vals;
- if (ci_count > 0) {
- started = 0;
- for (i=0; i < ci_count; i++) {
- if (ifs2D->coordIndex.vals[i] == -1) {
- gf_path_close(stack->path);
- started = 0;
- } else if (!started) {
- started = 1;
- gf_path_add_move_to_vec(stack->path, &pts[ifs2D->coordIndex.vals[i]]);
- } else {
- gf_path_add_line_to_vec(stack->path, &pts[ifs2D->coordIndex.vals[i]]);
- }
- }
- if (started) gf_path_close(stack->path);
- } else if (c_count) {
- gf_path_add_move_to_vec(stack->path, &pts[0]);
- for (i=1; i < c_count; i++) {
- gf_path_add_line_to_vec(stack->path, &pts[i]);
- }
- gf_path_close(stack->path);
- }
- }
- static void IFS2D_Draw(GF_Node *node, GF_TraverseState *tr_state)
- {
- u32 i, count, ci_count;
- u32 j, ind_col, num_col;
- SFVec2f center, end;
- SFColor col_cen;
- GF_STENCIL grad;
- u32 *colors;
- GF_Path *path;
- SFVec2f start;
- SFVec2f *pts;
- SFColor col;
- Fixed alpha;
- GF_Raster2D *raster;
- DrawableContext *ctx = tr_state->ctx;
- M_IndexedFaceSet2D *ifs2D = (M_IndexedFaceSet2D *)node;
- M_Coordinate2D *coord = (M_Coordinate2D*) ifs2D->coord;
- M_Color *color = (M_Color *) ifs2D->color;
- col.red = col.green = col.blue = 0;
- /*simple case, no color specified*/
- if (!ifs2D->color) {
- visual_2d_texture_path(tr_state->visual, ctx->drawable->path, ctx, tr_state);
- visual_2d_draw_path(tr_state->visual, ctx->drawable->path, ctx, NULL, NULL, tr_state);
- return;
- }
- /*if default face use first color*/
- ci_count = ifs2D->coordIndex.count;
- pts = coord->point.vals;
- if (ci_count == 0) {
- col = (ifs2D->colorIndex.count > 0) ? color->color.vals[ifs2D->colorIndex.vals[0]] : color->color.vals[0];
- alpha = INT2FIX(GF_COL_A(ctx->aspect.fill_color)) / 255;
- if (!alpha || !ctx->aspect.pen_props.width) {
- alpha = INT2FIX(GF_COL_A(ctx->aspect.line_color)) / 255;
- ctx->aspect.line_color = GF_COL_ARGB_FIXED(alpha, col.red, col.green, col.blue);
- } else {
- ctx->aspect.fill_color = GF_COL_ARGB_FIXED(alpha, col.red, col.green, col.blue);
- }
- visual_2d_texture_path(tr_state->visual, ctx->drawable->path, ctx, tr_state);
- visual_2d_draw_path(tr_state->visual, ctx->drawable->path, ctx, NULL, NULL, tr_state);
- return;
- }
- /*we have color per faces so we need N path :(*/
- if (! ifs2D->colorPerVertex) {
- path = gf_path_new();
- count = 0;
- i = 0;
- while (1) {
- gf_path_reset(path);
- start = pts[ifs2D->coordIndex.vals[i]];
- gf_path_add_move_to(path, start.x, start.y);
- i++;
- while (ifs2D->coordIndex.vals[i] != -1) {
- start = pts[ifs2D->coordIndex.vals[i]];
- gf_path_add_line_to(path, start.x, start.y);
- i++;
- if (i >= ci_count) break;
- }
- /*close in ALL cases because even if the start/end points are the same the line join needs to be present*/
- gf_path_close(path);
- col = (ifs2D->colorIndex.count > 0) ? color->color.vals[ifs2D->colorIndex.vals[count]] : color->color.vals[count];
- alpha = INT2FIX(GF_COL_A(ctx->aspect.fill_color)) / 255;
- if (!alpha) {
- alpha = INT2FIX(GF_COL_A(ctx->aspect.line_color)) / 255;
- ctx->aspect.line_color = GF_COL_ARGB_FIXED(alpha, col.red, col.green, col.blue);
- } else {
- ctx->aspect.fill_color = GF_COL_ARGB_FIXED(alpha, col.red, col.green, col.blue);
- }
- visual_2d_texture_path(tr_state->visual, path, ctx, tr_state);
- visual_2d_draw_path(tr_state->visual, path, ctx, NULL, NULL, tr_state);
- count++;
- i++;
- if (i >= ci_count) break;
- ctx->flags &= ~CTX_PATH_FILLED;
- ctx->flags &= ~CTX_PATH_STROKE;
- }
- gf_path_del(path);
- return;
- }
- /*final case, color per vertex means gradient fill/strike*/
- raster = tr_state->visual->compositor->rasterizer;
- grad = raster->stencil_new(raster, GF_STENCIL_VERTEX_GRADIENT);
- /*not supported, fill default*/
- if (!grad) {
- visual_2d_texture_path(tr_state->visual, ctx->drawable->path, ctx, tr_state);
- visual_2d_draw_path(tr_state->visual, ctx->drawable->path, ctx, NULL, NULL, tr_state);
- return;
- }
- path = gf_path_new();
- ind_col = 0;
- i = 0;
- while (1) {
- gf_path_reset(path);
- start = pts[ifs2D->coordIndex.vals[i]];
- center = start;
- gf_path_add_move_to(path, start.x, start.y);
- num_col = 1;
- i+=1;
- while (ifs2D->coordIndex.vals[i] != -1) {
- end = pts[ifs2D->coordIndex.vals[i]];
- gf_path_add_line_to(path, end.x, end.y);
- i++;
- center.x += end.x;
- center.y += end.y;
- num_col ++;
- if (i >= ci_count) break;
- }
- gf_path_close(path);
- num_col++;
- alpha = INT2FIX(GF_COL_A(ctx->aspect.fill_color) ) / 255;
- colors = (u32*)gf_malloc(sizeof(u32) * num_col);
- col_cen.blue = col_cen.red = col_cen.green = 0;
- for (j=0; j<num_col-1; j++) {
- if (ifs2D->colorIndex.count > ind_col + j) {
- col = color->color.vals[ifs2D->colorIndex.vals[ind_col + j]];
- } else if (ci_count > ind_col + j) {
- col = color->color.vals[ifs2D->coordIndex.vals[ind_col + j]];
- }
- colors[j] = GF_COL_ARGB_FIXED(alpha, col.red, col.green, col.blue);
- col_cen.blue += col.blue;
- col_cen.green += col.green;
- col_cen.red += col.red;
- }
- colors[num_col-1] = colors[0];
- if (ifs2D->colorIndex.count > ind_col) {
- col = color->color.vals[ifs2D->colorIndex.vals[ind_col]];
- } else if (ci_count > ind_col) {
- col = color->color.vals[ifs2D->coordIndex.vals[ind_col]];
- }
- col_cen.blue += col.blue;
- col_cen.green += col.green;
- col_cen.red += col.red;
- raster->stencil_set_vertex_path(grad, path);
- raster->stencil_set_vertex_colors(grad, colors, num_col);
- gf_free(colors);
- col_cen.blue /= num_col;
- col_cen.green /= num_col;
- col_cen.red /= num_col;
- center.x /= num_col;
- center.y /= num_col;
- raster->stencil_set_vertex_center(grad, center.x, center.y, GF_COL_ARGB_FIXED(alpha, col_cen.red, col_cen.green, col_cen.blue) );
- raster->stencil_set_matrix(grad, &ctx->transform);
- /*draw*/
- visual_2d_draw_path(tr_state->visual, ctx->drawable->path, ctx, grad, grad, tr_state);
- raster->stencil_delete(grad);
- //goto next point
- i++;
- ind_col += num_col + 1;
- if (i >= ci_count) break;
- grad = raster->stencil_new(raster, GF_STENCIL_VERTEX_GRADIENT);
- ctx->flags &= ~CTX_PATH_FILLED;
- ctx->flags &= ~CTX_PATH_STROKE;
- }
- gf_path_del(path);
- }
- static void TraverseIFS2D(GF_Node *node, void *rs, Bool is_destroy)
- {
- DrawableContext *ctx;
- M_IndexedFaceSet2D *ifs2D = (M_IndexedFaceSet2D *)node;
- Drawable *stack = (Drawable *)gf_node_get_private(node);
- GF_TraverseState *tr_state = (GF_TraverseState *)rs;
- if (is_destroy) {
- drawable_node_del(node);
- return;
- }
- if (!ifs2D->coord) return;
- ifs2d_check_changes(node, stack, tr_state);
- switch (tr_state->traversing_mode) {
- case TRAVERSE_DRAW_2D:
- IFS2D_Draw(node, tr_state);
- return;
- #ifndef GPAC_DISABLE_3D
- case TRAVERSE_DRAW_3D:
- {
- DrawAspect2D asp;
- if (!stack->mesh) {
- stack->mesh = new_mesh();
- mesh_new_ifs2d(stack->mesh, node);
- }
- memset(&asp, 0, sizeof(DrawAspect2D));
- drawable_get_aspect_2d_mpeg4(node, &asp, tr_state);
- if (ifs2D->color && !GF_COL_A(asp.fill_color) ) {
- /*use special func to disable outline recompute and handle recompute ourselves*/
- StrikeInfo2D *si = drawable_get_strikeinfo(tr_state->visual->compositor, stack, &asp, tr_state->appear, NULL, 0, tr_state);
- if (!si->mesh_outline) {
- si->mesh_outline = new_mesh();
- mesh_new_ils(si->mesh_outline, ifs2D->coord, &ifs2D->coordIndex, ifs2D->color, &ifs2D->colorIndex, ifs2D->colorPerVertex, 1);
- }
- visual_3d_mesh_strike(tr_state, si->mesh_outline, asp.pen_props.width, asp.line_scale, asp.pen_props.dash);
- } else {
- visual_3d_draw_2d_with_aspect(stack, tr_state, &asp);
- }
- return;
- }
- #endif
- case TRAVERSE_PICK:
- vrml_drawable_pick(stack, tr_state);
- return;
- case TRAVERSE_GET_BOUNDS:
- gf_path_get_bounds(stack->path, &tr_state->bounds);
- return;
- case TRAVERSE_SORT:
- #ifndef GPAC_DISABLE_3D
- if (tr_state->visual->type_3d) return;
- #endif
- ctx = drawable_init_context_mpeg4(stack, tr_state);
- if (!ctx) return;
- drawable_finalize_sort(ctx, tr_state, NULL);
- return;
- }
- }
- static void IFS2D_SetColorIndex(GF_Node *node, GF_Route *route)
- {
- M_IndexedFaceSet2D *ifs2D = (M_IndexedFaceSet2D *)node;
- gf_sg_vrml_field_copy(&ifs2D->colorIndex, &ifs2D->set_colorIndex, GF_SG_VRML_MFINT32);
- gf_sg_vrml_mf_reset(&ifs2D->set_colorIndex, GF_SG_VRML_MFINT32);
- }
- static void IFS2D_SetCoordIndex(GF_Node *node, GF_Route *route)
- {
- M_IndexedFaceSet2D *ifs2D = (M_IndexedFaceSet2D *)node;
- gf_sg_vrml_field_copy(&ifs2D->coordIndex, &ifs2D->set_coordIndex, GF_SG_VRML_MFINT32);
- gf_sg_vrml_mf_reset(&ifs2D->set_coordIndex, GF_SG_VRML_MFINT32);
- }
- void compositor_init_indexed_face_set2d(GF_Compositor *compositor, GF_Node *node)
- {
- M_IndexedFaceSet2D *ifs2D = (M_IndexedFaceSet2D *)node;
- Drawable *stack = drawable_stack_new(compositor, node);
- stack->flags = DRAWABLE_USE_TRAVERSE_DRAW;
- gf_node_set_callback_function(node, TraverseIFS2D);
- ifs2D->on_set_colorIndex = IFS2D_SetColorIndex;
- ifs2D->on_set_coordIndex = IFS2D_SetCoordIndex;
- }
- #endif /*GPAC_DISABLE_VRML*/