Manipulators: lamp, camera & force-field

From custom-manipulators branch.
These may be improved they work on a basic level.

4 files changed, 362 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_armature.h b/source/blender/blenkernel/BKE_armature.h
index a68f1e763fd..131a229f43e 100644
--- a/source/blender/blenkernel/BKE_armature.h
+++ b/source/blender/blenkernel/BKE_armature.h
@@ -33,6 +33,7 @@
  *  \author nzc
  */
 
+struct bPose;
 struct Bone;
 struct GHash;
 struct Main;
diff --git a/source/blender/editors/space_view3d/CMakeLists.txt b/source/blender/editors/space_view3d/CMakeLists.txt
index 34b68a80a0f..af4c220ed46 100644
--- a/source/blender/editors/space_view3d/CMakeLists.txt
+++ b/source/blender/editors/space_view3d/CMakeLists.txt
@@ -59,6 +59,7 @@ set(SRC
 	view3d_walk.c
 	view3d_header.c
 	view3d_iterators.c
+	view3d_manipulators.c
 	view3d_ops.c
 	view3d_project.c
 	view3d_ruler.c
diff --git a/source/blender/editors/space_view3d/space_view3d.c b/source/blender/editors/space_view3d/space_view3d.c
index 1dc9b169714..33121291935 100644
--- a/source/blender/editors/space_view3d/space_view3d.c
+++ b/source/blender/editors/space_view3d/space_view3d.c
@@ -739,6 +739,9 @@ static void view3d_widgets(void)
 	wmManipulatorMapType *wmaptype = WM_manipulatormaptype_ensure(&wmap_params);
 
 	WM_manipulatorgrouptype_append(wmaptype, TRANSFORM_WGT_manipulator);
+	WM_manipulatorgrouptype_append(wmaptype, VIEW3D_WGT_lamp);
+	WM_manipulatorgrouptype_append(wmaptype, VIEW3D_WGT_force_field);
+	WM_manipulatorgrouptype_append(wmaptype, VIEW3D_WGT_camera);
 }
 
 
diff --git a/source/blender/editors/space_view3d/view3d_manipulators.c b/source/blender/editors/space_view3d/view3d_manipulators.c
new file mode 100644
index 00000000000..8d853498740
--- /dev/null
+++ b/source/blender/editors/space_view3d/view3d_manipulators.c
@@ -0,0 +1,357 @@
+/*
+ * ***** 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.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/editors/space_view3d/view3d_manipulators.c
+ *  \ingroup spview3d
+ */
+
+
+#include "BLI_blenlib.h"
+#include "BLI_math.h"
+#include "BLI_utildefines.h"
+
+#include "BKE_armature.h"
+#include "BKE_camera.h"
+#include "BKE_context.h"
+#include "BKE_object.h"
+
+#include "DNA_armature_types.h"
+#include "DNA_camera_types.h"
+#include "DNA_lamp_types.h"
+#include "DNA_object_types.h"
+#include "DNA_object_force.h"
+#include "DNA_manipulator_types.h"
+
+#include "ED_armature.h"
+#include "ED_screen.h"
+
+#include "MEM_guardedalloc.h"
+
+#include "RNA_access.h"
+
+#include "WM_api.h"
+#include "WM_types.h"
+
+#include "view3d_intern.h"  /* own include */
+
+/* -------------------------------------------------------------------- */
+
+/** \name Lamp Manipulators
+ * \{ */
+
+static bool WIDGETGROUP_lamp_poll(const bContext *C, wmManipulatorGroupType *UNUSED(wgrouptype))
+{
+	Object *ob = CTX_data_active_object(C);
+
+	if (ob && ob->type == OB_LAMP) {
+		Lamp *la = ob->data;
+		return (la->type == LA_SPOT);
+	}
+	return false;
+}
+
+static void WIDGETGROUP_lamp_init(const bContext *UNUSED(C), wmManipulatorGroup *wgroup)
+{
+	const char *propname = "spot_size";
+
+	const float color[4] = {0.5f, 0.5f, 1.0f, 1.0f};
+	const float color_hi[4] = {0.8f, 0.8f, 0.45f, 1.0f};
+
+	wmManipulatorWrapper *wwrapper = MEM_mallocN(sizeof(wmManipulatorWrapper), __func__);
+
+	wwrapper->manipulator = MANIPULATOR_arrow_new(wgroup, propname, MANIPULATOR_ARROW_STYLE_INVERTED);
+	wgroup->customdata = wwrapper;
+
+	MANIPULATOR_arrow_set_range_fac(wwrapper->manipulator, 4.0f);
+	WM_manipulator_set_color(wwrapper->manipulator, color);
+	WM_manipulator_set_color_highlight(wwrapper->manipulator, color_hi);
+}
+
+static void WIDGETGROUP_lamp_refresh(const bContext *C, wmManipulatorGroup *wgroup)
+{
+	wmManipulatorWrapper *wwrapper = wgroup->customdata;
+	Object *ob = CTX_data_active_object(C);
+	Lamp *la = ob->data;
+	float dir[3];
+
+	negate_v3_v3(dir, ob->obmat[2]);
+
+	MANIPULATOR_arrow_set_direction(wwrapper->manipulator, dir);
+	WM_manipulator_set_origin(wwrapper->manipulator, ob->obmat[3]);
+
+	/* need to set property here for undo. TODO would prefer to do this in _init */
+	PointerRNA lamp_ptr;
+	const char *propname = "spot_size";
+	RNA_pointer_create(&la->id, &RNA_Lamp, la, &lamp_ptr);
+	WM_manipulator_set_property(wwrapper->manipulator, ARROW_SLOT_OFFSET_WORLD_SPACE, &lamp_ptr, propname);
+}
+
+void VIEW3D_WGT_lamp(wmManipulatorGroupType *wgt)
+{
+	wgt->name = "Lamp Widgets";
+
+	wgt->poll = WIDGETGROUP_lamp_poll;
+	wgt->init = WIDGETGROUP_lamp_init;
+	wgt->refresh = WIDGETGROUP_lamp_refresh;
+
+	wgt->flag |= (WM_MANIPULATORGROUPTYPE_IS_3D | WM_MANIPULATORGROUPTYPE_SCALE_3D);
+}
+
+/** \} */
+
+
+/* -------------------------------------------------------------------- */
+
+/** \name Camera Manipulators
+ * \{ */
+
+struct CameraWidgetGroup {
+	wmManipulator *dop_dist;
+	wmManipulator *focal_len;
+	wmManipulator *ortho_scale;
+};
+
+static bool WIDGETGROUP_camera_poll(const bContext *C, wmManipulatorGroupType *UNUSED(wgrouptype))
+{
+	Object *ob = CTX_data_active_object(C);
+
+	return (ob && ob->type == OB_CAMERA);
+}
+
+static void cameragroup_property_setup(wmManipulator *widget, Object *ob, Camera *ca, const bool is_ortho)
+{
+	const float scale[3] = {1.0f / len_v3(ob->obmat[0]), 1.0f / len_v3(ob->obmat[1]), 1.0f / len_v3(ob->obmat[2])};
+	const float scale_fac = ca->drawsize;
+	const float drawsize = is_ortho ?
+	        (0.5f * ca->ortho_scale) :
+	        (scale_fac / ((scale[0] + scale[1] + scale[2]) / 3.0f));
+	const float half_sensor = 0.5f * ((ca->sensor_fit == CAMERA_SENSOR_FIT_VERT) ? ca->sensor_y : ca->sensor_x);
+	const char *propname = is_ortho ? "ortho_scale" : "lens";
+
+	PointerRNA camera_ptr;
+	float min, max, range;
+	float step, precision;
+
+	RNA_pointer_create(&ca->id, &RNA_Camera, ca, &camera_ptr);
+
+	/* get property range */
+	PropertyRNA *prop = RNA_struct_find_property(&camera_ptr, propname);
+	RNA_property_float_ui_range(&camera_ptr, prop, &min, &max, &step, &precision);
+	range = max - min;
+
+	MANIPULATOR_arrow_set_range_fac(widget, is_ortho ? (scale_fac * range) : (drawsize * range / half_sensor));
+}
+
+static void WIDGETGROUP_camera_init(const bContext *C, wmManipulatorGroup *wgroup)
+{
+	Object *ob = CTX_data_active_object(C);
+	Camera *ca = ob->data;
+	float dir[3];
+
+	struct CameraWidgetGroup *camgroup = MEM_callocN(sizeof(struct CameraWidgetGroup), __func__);
+	wgroup->customdata = camgroup;
+
+	negate_v3_v3(dir, ob->obmat[2]);
+
+	/* dof distance */
+	{
+		const float color[4] = {1.0f, 0.3f, 0.0f, 1.0f};
+		const float color_hi[4] = {1.0f, 0.3f, 0.0f, 1.0f};
+
+		camgroup->dop_dist = MANIPULATOR_arrow_new(wgroup, "dof_distance", MANIPULATOR_ARROW_STYLE_CROSS);
+		WM_manipulator_set_flag(camgroup->dop_dist, WM_MANIPULATOR_DRAW_HOVER, true);
+		WM_manipulator_set_color(camgroup->dop_dist, color);
+		WM_manipulator_set_color_highlight(camgroup->dop_dist, color_hi);
+	}
+
+	/* focal length
+	 * - logic/calculations are similar to BKE_camera_view_frame_ex, better keep in sync */
+	{
+		const float color[4] = {1.0f, 1.0, 0.27f, 0.5f};
+		const float color_hi[4] = {1.0f, 1.0, 0.27f, 1.0f};
+
+		camgroup->focal_len = MANIPULATOR_arrow_new(
+		        wgroup, "focal_len",
+		        (MANIPULATOR_ARROW_STYLE_CONE | MANIPULATOR_ARROW_STYLE_CONSTRAINED));
+		WM_manipulator_set_color(camgroup->focal_len, color);
+		WM_manipulator_set_color_highlight(camgroup->focal_len, color_hi);
+		cameragroup_property_setup(camgroup->focal_len, ob, ca, false);
+
+		camgroup->ortho_scale = MANIPULATOR_arrow_new(
+		        wgroup, "ortho_scale",
+		        (MANIPULATOR_ARROW_STYLE_CONE | MANIPULATOR_ARROW_STYLE_CONSTRAINED));
+		WM_manipulator_set_color(camgroup->ortho_scale, color);
+		WM_manipulator_set_color_highlight(camgroup->ortho_scale, color_hi);
+		cameragroup_property_setup(camgroup->ortho_scale, ob, ca, true);
+	}
+}
+
+static void WIDGETGROUP_camera_refresh(const bContext *C, wmManipulatorGroup *wgroup)
+{
+	if (!wgroup->customdata)
+		return;
+
+	struct CameraWidgetGroup *camgroup = wgroup->customdata;
+	Object *ob = CTX_data_active_object(C);
+	Camera *ca = ob->data;
+	PointerRNA camera_ptr;
+	float dir[3];
+
+	RNA_pointer_create(&ca->id, &RNA_Camera, ca, &camera_ptr);
+
+	negate_v3_v3(dir, ob->obmat[2]);
+
+	if (ca->flag & CAM_SHOWLIMITS) {
+		MANIPULATOR_arrow_set_direction(camgroup->dop_dist, dir);
+		MANIPULATOR_arrow_set_up_vector(camgroup->dop_dist, ob->obmat[1]);
+		WM_manipulator_set_origin(camgroup->dop_dist, ob->obmat[3]);
+		WM_manipulator_set_scale(camgroup->dop_dist, ca->drawsize);
+		WM_manipulator_set_flag(camgroup->dop_dist, WM_MANIPULATOR_HIDDEN, false);
+
+		/* need to set property here for undo. TODO would prefer to do this in _init */
+		WM_manipulator_set_property(camgroup->dop_dist, ARROW_SLOT_OFFSET_WORLD_SPACE, &camera_ptr, "dof_distance");
+	}
+	else {
+		WM_manipulator_set_flag(camgroup->dop_dist, WM_MANIPULATOR_HIDDEN, true);
+	}
+
+	/* TODO - make focal length/ortho scale widget optional */
+	if (true) {
+		const bool is_ortho = (ca->type == CAM_ORTHO);
+		const float scale[3] = {1.0f / len_v3(ob->obmat[0]), 1.0f / len_v3(ob->obmat[1]), 1.0f / len_v3(ob->obmat[2])};
+		const float scale_fac = ca->drawsize;
+		const float drawsize = is_ortho ?
+		        (0.5f * ca->ortho_scale) :
+		        (scale_fac / ((scale[0] + scale[1] + scale[2]) / 3.0f));
+		float offset[3];
+		float asp[2];
+
+		wmManipulator *widget = is_ortho ? camgroup->ortho_scale : camgroup->focal_len;
+		WM_manipulator_set_flag(widget, WM_MANIPULATOR_HIDDEN, false);
+		WM_manipulator_set_flag(is_ortho ? camgroup->focal_len : camgroup->ortho_scale, WM_MANIPULATOR_HIDDEN, true);
+
+
+		/* account for lens shifting */
+		offset[0] = ((ob->size[0] > 0.0f) ? -2.0f : 2.0f) * ca->shiftx;
+		offset[1] = 2.0f * ca->shifty;
+		offset[2] = 0.0f;
+
+		/* get aspect */
+		const Scene *scene = CTX_data_scene(C);
+		const float aspx = (float)scene->r.xsch * scene->r.xasp;
+		const float aspy = (float)scene->r.ysch * scene->r.yasp;
+		const int sensor_fit = BKE_camera_sensor_fit(ca->sensor_fit, aspx, aspy);
+		asp[0] = (sensor_fit == CAMERA_SENSOR_FIT_HOR) ? 1.0 : aspx / aspy;
+		asp[1] = (sensor_fit == CAMERA_SENSOR_FIT_HOR) ? aspy / aspx : 1.0f;
+
+		MANIPULATOR_arrow_set_up_vector(widget, ob->obmat[1]);
+		MANIPULATOR_arrow_set_direction(widget, dir);
+		MANIPULATOR_arrow_cone_set_aspect(widget, asp);
+		WM_manipulator_set_origin(widget, ob->obmat[3]);
+		WM_manipulator_set_offset(widget, offset);
+		WM_manipulator_set_scale(widget, drawsize);
+
+		/* need to set property here for undo. TODO would prefer to do this in _init */
+		WM_manipulator_set_property(camgroup->focal_len, ARROW_SLOT_OFFSET_WORLD_SPACE, &camera_ptr, "lens");
+		WM_manipulator_set_property(camgroup->ortho_scale, ARROW_SLOT_OFFSET_WORLD_SPACE, &camera_ptr, "ortho_scale");
+	}
+}
+
+void VIEW3D_WGT_camera(wmManipulatorGroupType *wgt)
+{
+	wgt->name = "Camera Widgets";
+
+	wgt->poll = WIDGETGROUP_camera_poll;
+	wgt->init = WIDGETGROUP_camera_init;
+	wgt->refresh = WIDGETGROUP_camera_refresh;
+
+	wgt->flag |= WM_MANIPULATORGROUPTYPE_IS_3D;
+}
+
+/** \} */
+
+
+/* -------------------------------------------------------------------- */
+
+/** \name Force Field Manipulators
+ * \{ */
+
+static bool WIDGETGROUP_forcefield_poll(const bContext *C, wmManipulatorGroupType *UNUSED(wgrouptype))
+{
+	Object *ob = CTX_data_active_object(C);
+
+	return (ob && ob->pd && ob->pd->forcefield);
+}
+
+static void WIDGETGROUP_forcefield_init(const bContext *UNUSED(C), wmManipulatorGroup *wgroup)
+{
+	const float col[4] = {0.8f, 0.8f, 0.45f, 0.5f};
+	const float col_hi[4] = {0.8f, 0.8f, 0.45f, 1.0f};
+
+	/* only wind effector for now */
+	wmManipulatorWrapper *wwrapper = MEM_mallocN(sizeof(wmManipulatorWrapper), __func__);
+	wgroup->customdata = wwrapper;
+
+	wwrapper->manipulator = MANIPULATOR_arrow_new(wgroup, "field_strength", MANIPULATOR_ARROW_STYLE_CONSTRAINED);
+
+	MANIPULATOR_arrow_set_ui_range(wwrapper->manipulator, -200.0f, 200.0f);
+	MANIPULATOR_arrow_set_range_fac(wwrapper->manipulator, 6.0f);
+	WM_manipulator_set_color(wwrapper->manipulator, col);
+	WM_manipulator_set_color_highlight(wwrapper->manipulator, col_hi);
+}
+
+static void WIDGETGROUP_forcefield_refresh(const bContext *C, wmManipulatorGroup *wgroup)
+{
+	wmManipulatorWrapper *wwrapper = wgroup->customdata;
+	Object *ob = CTX_data_active_object(C);
+	PartDeflect *pd = ob->pd;
+
+	if (pd->forcefield == PFIELD_WIND) {
+		const float size = (ob->type == OB_EMPTY) ? ob->empty_drawsize : 1.0f;
+		const float ofs[3] = {0.0f, -size, 0.0f};
+		PointerRNA field_ptr;
+
+		RNA_pointer_create(&ob->id, &RNA_FieldSettings, pd, &field_ptr);
+
+		MANIPULATOR_arrow_set_direction(wwrapper->manipulator, ob->obmat[2]);
+		WM_manipulator_set_origin(wwrapper->manipulator, ob->obmat[3]);
+		WM_manipulator_set_offset(wwrapper->manipulator, ofs);
+		WM_manipulator_set_flag(wwrapper->manipulator, WM_MANIPULATOR_HIDDEN, false);
+		WM_manipulator_set_property(wwrapper->manipulator, ARROW_SLOT_OFFSET_WORLD_SPACE, &field_ptr, "strength");
+	}
+	else {
+		WM_manipulator_set_flag(wwrapper->manipulator, WM_MANIPULATOR_HIDDEN, true);
+	}
+}
+
+void VIEW3D_WGT_force_field(wmManipulatorGroupType *wgt)
+{
+	wgt->name = "Force Field Widgets";
+
+	wgt->poll = WIDGETGROUP_forcefield_poll;
+	wgt->init = WIDGETGROUP_forcefield_init;
+	wgt->refresh = WIDGETGROUP_forcefield_refresh;
+
+	wgt->flag |= WM_MANIPULATORGROUPTYPE_IS_3D;
+}
+
+/** \} */