diff options
Diffstat (limited to 'source/blender/editors/manipulator_library/manipulator_types/arrow2d_manipulator.c')
-rw-r--r-- | source/blender/editors/manipulator_library/manipulator_types/arrow2d_manipulator.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/source/blender/editors/manipulator_library/manipulator_types/arrow2d_manipulator.c b/source/blender/editors/manipulator_library/manipulator_types/arrow2d_manipulator.c new file mode 100644 index 00000000000..44dd5698a48 --- /dev/null +++ b/source/blender/editors/manipulator_library/manipulator_types/arrow2d_manipulator.c @@ -0,0 +1,224 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2016 Blender Foundation. + * All rights reserved. + * + * Contributor(s): none yet. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file arrow2d_manipulator.c + * \ingroup wm + * + * \name 2D Arrow Manipulator + * + * \brief Simple arrow manipulator which is dragged into a certain direction. + */ + +#include "BIF_gl.h" + +#include "BKE_context.h" + +#include "BLI_listbase.h" +#include "BLI_math.h" +#include "BLI_rect.h" + +#include "DNA_windowmanager_types.h" + +#include "ED_screen.h" +#include "ED_manipulator_library.h" + +#include "GPU_draw.h" +#include "GPU_immediate.h" +#include "GPU_matrix.h" + +#include "MEM_guardedalloc.h" + +#include "RNA_access.h" +#include "RNA_define.h" + +#include "WM_types.h" + +/* own includes */ +#include "WM_api.h" + +#include "../manipulator_library_intern.h" + +static void arrow2d_draw_geom(wmManipulator *mpr, const float matrix[4][4], const float color[4]) +{ + const float size = 0.11f; + const float size_breadth = size / 2.0f; + const float size_length = size * 1.7f; + /* Subtract the length so the arrow fits in the hotspot. */ + const float arrow_length = RNA_float_get(mpr->ptr, "length") - size_length; + const float arrow_angle = RNA_float_get(mpr->ptr, "angle"); + + uint pos = GWN_vertformat_attr_add(immVertexFormat(), "pos", GWN_COMP_F32, 2, GWN_FETCH_FLOAT); + + gpuPushMatrix(); + gpuMultMatrix(matrix); + gpuRotate2D(RAD2DEGF(arrow_angle)); + + immBindBuiltinProgram(GPU_SHADER_2D_UNIFORM_COLOR); + + immUniformColor4fv(color); + + immBegin(GWN_PRIM_LINES, 2); + immVertex2f(pos, 0.0f, 0.0f); + immVertex2f(pos, 0.0f, arrow_length); + immEnd(); + + immBegin(GWN_PRIM_TRIS, 3); + immVertex2f(pos, size_breadth, arrow_length); + immVertex2f(pos, -size_breadth, arrow_length); + immVertex2f(pos, 0.0f, arrow_length + size_length); + immEnd(); + + immUnbindProgram(); + + gpuPopMatrix(); +} + +static void manipulator_arrow2d_draw(const bContext *UNUSED(C), wmManipulator *mpr) +{ + float color[4]; + + float matrix_final[4][4]; + + manipulator_color_get(mpr, mpr->state & WM_MANIPULATOR_STATE_HIGHLIGHT, color); + + glLineWidth(mpr->line_width); + + WM_manipulator_calc_matrix_final(mpr, matrix_final); + + glEnable(GL_BLEND); + arrow2d_draw_geom(mpr, matrix_final, color); + glDisable(GL_BLEND); + + if (mpr->interaction_data) { + ManipulatorInteraction *inter = mpr->interaction_data; + + glEnable(GL_BLEND); + arrow2d_draw_geom(mpr, inter->init_matrix_final, (const float[4]){0.5f, 0.5f, 0.5f, 0.5f}); + glDisable(GL_BLEND); + } +} + +static void manipulator_arrow2d_setup(wmManipulator *mpr) +{ + mpr->flag |= WM_MANIPULATOR_DRAW_MODAL; +} + +static int manipulator_arrow2d_invoke( + bContext *UNUSED(C), wmManipulator *mpr, const wmEvent *UNUSED(event)) +{ + ManipulatorInteraction *inter = MEM_callocN(sizeof(ManipulatorInteraction), __func__); + + copy_m4_m4(inter->init_matrix_basis, mpr->matrix_basis); + WM_manipulator_calc_matrix_final(mpr, inter->init_matrix_final); + + mpr->interaction_data = inter; + + return OPERATOR_RUNNING_MODAL; +} + +static int manipulator_arrow2d_test_select( + bContext *UNUSED(C), wmManipulator *mpr, const wmEvent *event) +{ + const float mval[2] = {event->mval[0], event->mval[1]}; + const float arrow_length = RNA_float_get(mpr->ptr, "length"); + const float arrow_angle = RNA_float_get(mpr->ptr, "angle"); + const float line_len = arrow_length * mpr->scale_final; + float mval_local[2]; + + copy_v2_v2(mval_local, mval); + sub_v2_v2(mval_local, mpr->matrix_basis[3]); + + float line[2][2]; + line[0][0] = line[0][1] = line[1][0] = 0.0f; + line[1][1] = line_len; + + /* rotate only if needed */ + if (arrow_angle != 0.0f) { + float rot_point[2]; + copy_v2_v2(rot_point, line[1]); + rotate_v2_v2fl(line[1], rot_point, arrow_angle); + } + + /* arrow line intersection check */ + float isect_1[2], isect_2[2]; + const int isect = isect_line_sphere_v2( + line[0], line[1], mval_local, MANIPULATOR_HOTSPOT + mpr->line_width * 0.5f, + isect_1, isect_2); + + if (isect > 0) { + float line_ext[2][2]; /* extended line for segment check including hotspot */ + copy_v2_v2(line_ext[0], line[0]); + line_ext[1][0] = line[1][0] + MANIPULATOR_HOTSPOT * ((line[1][0] - line[0][0]) / line_len); + line_ext[1][1] = line[1][1] + MANIPULATOR_HOTSPOT * ((line[1][1] - line[0][1]) / line_len); + + const float lambda_1 = line_point_factor_v2(isect_1, line_ext[0], line_ext[1]); + if (isect == 1) { + if (IN_RANGE_INCL(lambda_1, 0.0f, 1.0f)) { + return 0; + } + } + else { + BLI_assert(isect == 2); + const float lambda_2 = line_point_factor_v2(isect_2, line_ext[0], line_ext[1]); + if (IN_RANGE_INCL(lambda_1, 0.0f, 1.0f) && IN_RANGE_INCL(lambda_2, 0.0f, 1.0f)) { + return 0; + } + } + } + + return -1; +} + +/* -------------------------------------------------------------------- */ +/** \name 2D Arrow Manipulator API + * + * \{ */ + +static void MANIPULATOR_WT_arrow_2d(wmManipulatorType *wt) +{ + /* identifiers */ + wt->idname = "MANIPULATOR_WT_arrow_2d"; + + /* api callbacks */ + wt->draw = manipulator_arrow2d_draw; + wt->setup = manipulator_arrow2d_setup; + wt->invoke = manipulator_arrow2d_invoke; + wt->test_select = manipulator_arrow2d_test_select; + + wt->struct_size = sizeof(wmManipulator); + + /* rna */ + RNA_def_float(wt->srna, "length", 1.0f, 0.0f, FLT_MAX, "Arrow Line Length", "", 0.0f, FLT_MAX); + RNA_def_float_rotation( + wt->srna, "angle", 0, NULL, DEG2RADF(-360.0f), DEG2RADF(360.0f), + "Roll", "", DEG2RADF(-360.0f), DEG2RADF(360.0f)); +} + +void ED_manipulatortypes_arrow_2d(void) +{ + WM_manipulatortype_append(MANIPULATOR_WT_arrow_2d); +} + +/** \} */ |