void VisualToolRotateZ::Draw() {
if (!active_line) return;
DrawAllFeatures();
float radius = (pos - org->pos).Len();
float oRadius = radius;
if (radius < 50)
radius = 50;
// Set up the projection
gl.SetOrigin(org->pos);
gl.SetRotation(rotation_x, rotation_y, 0);
gl.SetScale(scale);
// Draw the circle
gl.SetLineColour(colour[0]);
gl.SetFillColour(colour[1], 0.3f);
gl.DrawRing(Vector2D(0, 0), radius + 4, radius - 4);
// Draw markers around circle
int markers = 6;
float markStart = -90.f / markers;
float markEnd = markStart + (180.f / markers);
for (int i = 0; i < markers; ++i) {
float angle = i * (360.f / markers);
gl.DrawRing(Vector2D(0, 0), radius+30, radius+12, 1.0, angle+markStart, angle+markEnd);
}
// Draw the baseline through the origin showing current rotation
Vector2D angle_vec(Vector2D::FromAngle(angle * deg2rad));
gl.SetLineColour(colour[3], 1, 2);
gl.DrawLine(angle_vec * -radius, angle_vec * radius);
if (org->pos != pos) {
Vector2D rotated_pos = Vector2D::FromAngle(angle * deg2rad - (pos - org->pos).Angle()) * oRadius;
// Draw the line from origin to rotated position
gl.DrawLine(Vector2D(), rotated_pos);
// Draw the line under the text
gl.DrawLine(rotated_pos - angle_vec * 20, rotated_pos + angle_vec * 20);
}
// Draw the fake features on the ring
gl.SetLineColour(colour[0], 1.f, 1);
gl.SetFillColour(colour[1], 0.3f);
gl.DrawCircle(angle_vec * radius, 4);
gl.DrawCircle(angle_vec * -radius, 4);
// Clear the projection
gl.ResetTransform();
// Draw line to mouse if it isn't over the origin feature
if (mouse_pos && (mouse_pos - org->pos).SquareLen() > 100) {
gl.SetLineColour(colour[0]);
gl.DrawLine(org->pos, mouse_pos);
}
}
void VisualToolDrag::Draw() {
DrawAllFeatures();
// Draw connecting lines
for (feature_iterator cur = features.begin(); cur != features.end(); ++cur) {
if (cur->type == DRAG_START) continue;
feature_iterator p2 = cur;
feature_iterator p1 = cur->parent;
// Move end marker has an arrow; origin doesn't
bool has_arrow = p2->type == DRAG_END;
int arrow_len = has_arrow ? 10 : 0;
// Don't show the connecting line if the features are very close
Vector2D direction = p2->pos - p1->pos;
if (direction.SquareLen() < (20 + arrow_len) * (20 + arrow_len)) continue;
direction = direction.Unit();
// Get the start and end points of the line
Vector2D start = p1->pos + direction * 10;
Vector2D end = p2->pos - direction * (10 + arrow_len);
if (has_arrow) {
gl.SetLineColour(colour[3], 0.8f, 2);
// Arrow line
gl.DrawLine(start, end);
// Arrow head
Vector2D t_half_base_w = Vector2D(-direction.Y(), direction.X()) * 4;
gl.DrawTriangle(end + direction * arrow_len, end + t_half_base_w, end - t_half_base_w);
}
// Draw dashed line
else {
gl.SetLineColour(colour[3], 0.5f, 2);
gl.DrawDashedLine(start, end, 6);
}
}
}
void VisualToolRotateXY::Draw() {
if (!active_line) return;
DrawAllFeatures();
// Transform grid
gl.SetOrigin(org->pos);
gl.SetRotation(angle_x, angle_y, angle_z);
gl.SetShear(fax, fay);
// Draw grid
gl.SetLineColour(colour[0], 0.5f, 2);
gl.SetModeLine();
float r = colour[0].Red() / 255.f;
float g = colour[0].Green() / 255.f;
float b = colour[0].Blue() / 255.f;
// Number of lines on each side of each axis
static const int radius = 15;
// Total number of lines, including center axis line
static const int line_count = radius * 2 + 1;
// Distance between each line in pixels
static const int spacing = 20;
// Length of each grid line in pixels from axis to one end
static const int half_line_length = spacing * (radius + 1);
static const float fade_factor = 0.9f / radius;
std::vector<float> colors(line_count * 8 * 4);
for (int i = 0; i < line_count * 8; ++i) {
colors[i * 4 + 0] = r;
colors[i * 4 + 1] = g;
colors[i * 4 + 2] = b;
colors[i * 4 + 3] = (i + 3) % 4 > 1 ? 0 : (1.f - abs(i / 8 - radius) * fade_factor);
}
std::vector<float> points(line_count * 8 * 2);
for (int i = 0; i < line_count; ++i) {
int pos = spacing * (i - radius);
points[i * 16 + 0] = pos;
points[i * 16 + 1] = half_line_length;
points[i * 16 + 2] = pos;
points[i * 16 + 3] = 0;
points[i * 16 + 4] = pos;
points[i * 16 + 5] = 0;
points[i * 16 + 6] = pos;
points[i * 16 + 7] = -half_line_length;
points[i * 16 + 8] = half_line_length;
points[i * 16 + 9] = pos;
points[i * 16 + 10] = 0;
points[i * 16 + 11] = pos;
points[i * 16 + 12] = 0;
points[i * 16 + 13] = pos;
points[i * 16 + 14] = -half_line_length;
points[i * 16 + 15] = pos;
}
gl.DrawLines(2, points, 4, colors);
// Draw vectors
gl.SetLineColour(colour[3], 1.f, 2);
float vectors[] = {
0.f, 0.f, 0.f,
50.f, 0.f, 0.f,
0.f, 0.f, 0.f,
0.f, 50.f, 0.f,
0.f, 0.f, 0.f,
0.f, 0.f, 50.f,
};
gl.DrawLines(3, vectors, 6);
// Draw arrow tops
float arrows[] = {
60.f, 0.f, 0.f,
50.f, -3.f, -3.f,
50.f, 3.f, -3.f,
50.f, 3.f, 3.f,
50.f, -3.f, 3.f,
50.f, -3.f, -3.f,
0.f, 60.f, 0.f,
-3.f, 50.f, -3.f,
3.f, 50.f, -3.f,
3.f, 50.f, 3.f,
-3.f, 50.f, 3.f,
-3.f, 50.f, -3.f,
0.f, 0.f, 60.f,
-3.f, -3.f, 50.f,
3.f, -3.f, 50.f,
3.f, 3.f, 50.f,
-3.f, 3.f, 50.f,
-3.f, -3.f, 50.f,
};
gl.DrawLines(3, arrows, 18);
gl.ResetTransform();
}
