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Gizmo: show hovering regions of cage2d gizmo to indicate constraint axis

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This commit is contained in:
Weizhen Huang
2023-02-13 19:19:12 +01:00
parent 7bf20e93d6
commit 275d69467b
1 changed files with 53 additions and 8 deletions
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61
source/blender/editors/gizmo_library/gizmo_types/cage2d_gizmo.c
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@@ -580,12 +580,19 @@ static void cage2d_draw_circle_wire(const float color[3],
immUnbindProgram();
}
static void cage2d_draw_rect_handles(const rctf *r,
const float margin[2],
const float color[3],
const int transform_flag,
bool solid)
static void cage2d_draw_rect_corner_handles(const rctf *r,
const int highlighted,
const float margin[2],
const float color[3],
const int transform_flag,
bool solid)
{
/* Only draw corner handles when hovering over the corners. */
if (highlighted < ED_GIZMO_CAGE2D_PART_SCALE_MIN_X_MIN_Y ||
highlighted > ED_GIZMO_CAGE2D_PART_SCALE_MAX_X_MAX_Y) {
return;
}
uint pos = GPU_vertformat_attr_add(immVertexFormat(), "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
void (*circle_fn)(uint, float, float, float, float, int) = (solid) ?
imm_draw_circle_fill_aspect_2d :
@@ -615,6 +622,38 @@ static void cage2d_draw_rect_handles(const rctf *r,
immUnbindProgram();
}
static void cage2d_draw_rect_edge_handles(const rctf *r,
const int highlighted,
const float size[2],
const float margin[2],
const float color[3],
bool solid)
{
uint pos = GPU_vertformat_attr_add(immVertexFormat(), "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
immUniformColor3fv(color);
switch (highlighted) {
case ED_GIZMO_CAGE2D_PART_SCALE_MIN_X:
case ED_GIZMO_CAGE2D_PART_SCALE_MAX_X: {
const float rad[2] = {0.2f * margin[0], 0.4f * size[1]};
imm_draw_point_aspect_2d(pos, r->xmin, 0.f, rad[0], rad[1], solid);
imm_draw_point_aspect_2d(pos, r->xmax, 0.f, rad[0], rad[1], solid);
break;
}
case ED_GIZMO_CAGE2D_PART_SCALE_MIN_Y:
case ED_GIZMO_CAGE2D_PART_SCALE_MAX_Y: {
const float rad[2] = {0.4f * size[0], 0.2f * margin[1]};
imm_draw_point_aspect_2d(pos, 0.f, r->ymin, rad[0], rad[1], solid);
imm_draw_point_aspect_2d(pos, 0.f, r->ymax, rad[0], rad[1], solid);
break;
}
}
immUnbindProgram();
}
/** \} */
static void gizmo_cage2d_draw_intern(wmGizmo *gz,
@@ -754,9 +793,15 @@ static void gizmo_cage2d_draw_intern(wmGizmo *gz,
cage2d_draw_rect_wire(&r, margin, black, transform_flag, draw_options, outline_line_width);
cage2d_draw_rect_wire(&r, margin, color, transform_flag, draw_options, gz->line_width);
/* Corner gizmos. */
cage2d_draw_rect_handles(&r, margin, black, transform_flag, false);
cage2d_draw_rect_handles(&r, margin, color, transform_flag, true);
/* Edge handles. */
cage2d_draw_rect_edge_handles(&r, gz->highlight_part, size_real, margin, color, true);
cage2d_draw_rect_edge_handles(&r, gz->highlight_part, size_real, margin, black, false);
/* Corner handles. */
cage2d_draw_rect_corner_handles(
&r, gz->highlight_part, margin, color, transform_flag, true);
cage2d_draw_rect_corner_handles(
&r, gz->highlight_part, margin, black, transform_flag, false);
}
else if (draw_style == ED_GIZMO_CAGE2D_STYLE_CIRCLE) {
cage2d_draw_circle_wire(black, size_real, margin, outline_line_width);