parent
5fed6bdc72
commit
690a90bd35
@ -54,6 +54,7 @@ Other Changes:
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- LabelText: Fixed clipping of multi-line value text when label is single-line. (#4004)
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- LabelText: Fixed vertical alignment of single-line value text when label is multi-line. (#4004)
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- Popups: Added 'OpenPopup(ImGuiID id)' overload to facilitate calling from nested stacks. (#3993, #331) [@zlash]
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- ImDrawList: Fixed PathArcTo() regression from 1.82 preventing use of counter-clockwise angles. (#4030, #3491) [@thedmd]
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- Demo: Improved popups demo and comments.
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- Backends: SDL: Rework global mouse pos availability check listing supported platforms explicitly,
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effectively fixing mouse access on Raspberry Pi. (#2837, #3950) [@lethal-guitar, @hinxx]
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@ -1037,7 +1037,6 @@ void ImDrawList::_PathArcToFastEx(const ImVec2& center, float radius, int a_min_
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_Path.push_back(center);
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return;
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}
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IM_ASSERT(a_min_sample <= a_max_sample);
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// Calculate arc auto segment step size
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if (a_step <= 0)
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@ -1046,17 +1045,7 @@ void ImDrawList::_PathArcToFastEx(const ImVec2& center, float radius, int a_min_
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// Make sure we never do steps larger than one quarter of the circle
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a_step = ImClamp(a_step, 1, IM_DRAWLIST_ARCFAST_TABLE_SIZE / 4);
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// Normalize a_min_sample to always start lie in [0..IM_DRAWLIST_ARCFAST_SAMPLE_MAX] range.
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if (a_min_sample < 0)
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{
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int normalized_sample = a_min_sample % IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
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if (normalized_sample < 0)
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normalized_sample += IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
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a_max_sample += (normalized_sample - a_min_sample);
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a_min_sample = normalized_sample;
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}
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const int sample_range = a_max_sample - a_min_sample;
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const int sample_range = ImAbs(a_max_sample - a_min_sample);
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const int a_next_step = a_step;
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int samples = sample_range + 1;
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@ -1082,16 +1071,40 @@ void ImDrawList::_PathArcToFastEx(const ImVec2& center, float radius, int a_min_
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ImVec2* out_ptr = _Path.Data + (_Path.Size - samples);
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int sample_index = a_min_sample;
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for (int a = a_min_sample; a <= a_max_sample; a += a_step, sample_index += a_step, a_step = a_next_step)
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if (sample_index < 0 || sample_index >= IM_DRAWLIST_ARCFAST_SAMPLE_MAX)
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{
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// a_step is clamped to IM_DRAWLIST_ARCFAST_SAMPLE_MAX, so we have guaranteed that it will not wrap over range twice or more
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if (sample_index >= IM_DRAWLIST_ARCFAST_SAMPLE_MAX)
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sample_index -= IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
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sample_index = sample_index % IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
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if (sample_index < 0)
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sample_index += IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
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}
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const ImVec2 s = _Data->ArcFastVtx[sample_index];
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out_ptr->x = center.x + s.x * radius;
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out_ptr->y = center.y + s.y * radius;
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out_ptr++;
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if (a_max_sample >= a_min_sample)
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{
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for (int a = a_min_sample; a <= a_max_sample; a += a_step, sample_index += a_step, a_step = a_next_step)
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{
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// a_step is clamped to IM_DRAWLIST_ARCFAST_SAMPLE_MAX, so we have guaranteed that it will not wrap over range twice or more
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if (sample_index >= IM_DRAWLIST_ARCFAST_SAMPLE_MAX)
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sample_index -= IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
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const ImVec2 s = _Data->ArcFastVtx[sample_index];
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out_ptr->x = center.x + s.x * radius;
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out_ptr->y = center.y + s.y * radius;
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out_ptr++;
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}
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}
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else
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{
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for (int a = a_min_sample; a >= a_max_sample; a -= a_step, sample_index -= a_step, a_step = a_next_step)
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{
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// a_step is clamped to IM_DRAWLIST_ARCFAST_SAMPLE_MAX, so we have guaranteed that it will not wrap over range twice or more
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if (sample_index < 0)
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sample_index += IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
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const ImVec2 s = _Data->ArcFastVtx[sample_index];
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out_ptr->x = center.x + s.x * radius;
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out_ptr->y = center.y + s.y * radius;
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out_ptr++;
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}
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}
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if (extra_max_sample)
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@ -1116,7 +1129,6 @@ void ImDrawList::_PathArcToN(const ImVec2& center, float radius, float a_min, fl
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_Path.push_back(center);
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return;
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}
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IM_ASSERT(a_min <= a_max);
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// Note that we are adding a point at both a_min and a_max.
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// If you are trying to draw a full closed circle you don't want the overlapping points!
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@ -1136,7 +1148,6 @@ void ImDrawList::PathArcToFast(const ImVec2& center, float radius, int a_min_of_
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_Path.push_back(center);
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return;
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}
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IM_ASSERT(a_min_of_12 <= a_max_of_12);
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_PathArcToFastEx(center, radius, a_min_of_12 * IM_DRAWLIST_ARCFAST_SAMPLE_MAX / 12, a_max_of_12 * IM_DRAWLIST_ARCFAST_SAMPLE_MAX / 12, 0);
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}
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@ -1147,7 +1158,6 @@ void ImDrawList::PathArcTo(const ImVec2& center, float radius, float a_min, floa
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_Path.push_back(center);
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return;
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}
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IM_ASSERT(a_min <= a_max);
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if (num_segments > 0)
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{
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@ -1158,28 +1168,33 @@ void ImDrawList::PathArcTo(const ImVec2& center, float radius, float a_min, floa
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// Automatic segment count
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if (radius <= _Data->ArcFastRadiusCutoff)
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{
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const bool a_is_reverse = a_max < a_min;
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// We are going to use precomputed values for mid samples.
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// Determine first and last sample in lookup table that belong to the arc.
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const int a_min_sample = (int)ImCeil(IM_DRAWLIST_ARCFAST_SAMPLE_MAX * a_min / (IM_PI * 2.0f));
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const int a_max_sample = (int)( IM_DRAWLIST_ARCFAST_SAMPLE_MAX * a_max / (IM_PI * 2.0f));
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const int a_mid_samples = ImMax(a_max_sample - a_min_sample, 0);
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const float a_min_sample_f = IM_DRAWLIST_ARCFAST_SAMPLE_MAX * a_min / (IM_PI * 2.0f);
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const float a_max_sample_f = IM_DRAWLIST_ARCFAST_SAMPLE_MAX * a_max / (IM_PI * 2.0f);
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const int a_min_sample = a_is_reverse ? (int)ImFloorSigned(a_min_sample_f) : (int)ImCeil(a_min_sample_f);
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const int a_max_sample = a_is_reverse ? (int)ImCeil(a_max_sample_f) : (int)ImFloorSigned(a_max_sample_f);
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const int a_mid_samples = a_is_reverse ? ImMax(a_min_sample - a_max_sample, 0) : ImMax(a_max_sample - a_min_sample, 0);
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const float a_min_segment_angle = a_min_sample * IM_PI * 2.0f / IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
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const float a_max_segment_angle = a_max_sample * IM_PI * 2.0f / IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
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const bool a_emit_start = (a_min_segment_angle - a_min) > 0.0f;
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const bool a_emit_end = (a_max - a_max_segment_angle) > 0.0f;
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const bool a_emit_start = (a_min_segment_angle - a_min) != 0.0f;
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const bool a_emit_end = (a_max - a_max_segment_angle) != 0.0f;
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_Path.reserve(_Path.Size + (a_mid_samples + 1 + (a_emit_start ? 1 : 0) + (a_emit_end ? 1 : 0)));
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if (a_emit_start)
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_Path.push_back(ImVec2(center.x + ImCos(a_min) * radius, center.y + ImSin(a_min) * radius));
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if (a_max_sample >= a_min_sample)
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if (a_mid_samples > 0)
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_PathArcToFastEx(center, radius, a_min_sample, a_max_sample, 0);
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if (a_emit_end)
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_Path.push_back(ImVec2(center.x + ImCos(a_max) * radius, center.y + ImSin(a_max) * radius));
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}
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else
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{
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const float arc_length = a_max - a_min;
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const float arc_length = ImAbs(a_max - a_min);
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const int circle_segment_count = _CalcCircleAutoSegmentCount(radius);
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const int arc_segment_count = ImMax((int)ImCeil(circle_segment_count * arc_length / (IM_PI * 2.0f)), (int)(2.0f * IM_PI / arc_length));
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_PathArcToN(center, radius, a_min, a_max, arc_segment_count);
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@ -371,6 +371,7 @@ static inline float ImPow(float x, float y) { return powf(x, y); }
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static inline double ImPow(double x, double y) { return pow(x, y); }
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static inline float ImLog(float x) { return logf(x); } // DragBehaviorT/SliderBehaviorT uses ImLog with either float/double and need the precision
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static inline double ImLog(double x) { return log(x); }
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static inline int ImAbs(int x) { return x < 0 ? -x : x; }
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static inline float ImAbs(float x) { return fabsf(x); }
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static inline double ImAbs(double x) { return fabs(x); }
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static inline float ImSign(float x) { return (x < 0.0f) ? -1.0f : ((x > 0.0f) ? 1.0f : 0.0f); } // Sign operator - returns -1, 0 or 1 based on sign of argument
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