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Fix Cohen-Sutherland algorithm implementation for d3d9

This commit is contained in:
floppyhammer 2021-07-16 10:34:18 +08:00
parent 62fbfcc91c
commit 7a57ce2ff9
1 changed files with 8 additions and 8 deletions
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16
content/src/clip.rs
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@ -515,25 +515,25 @@ pub fn clip_line_segment_to_rect(mut line_segment: LineSegment2F, rect: RectF)
point = vec2f(rect.min_x(),
lerp(line_segment.from_y(),
line_segment.to_y(),
(line_segment.min_x() - line_segment.from_x()) /
(line_segment.max_x() - line_segment.min_x())));
(rect.min_x() - line_segment.from_x()) /
(line_segment.to_x() - line_segment.from_x())));
} else if outcode.contains(Outcode::RIGHT) {
point = vec2f(rect.max_x(),
lerp(line_segment.from_y(),
line_segment.to_y(),
(line_segment.max_x() - line_segment.from_x()) /
(line_segment.max_x() - line_segment.min_x())));
(rect.max_x() - line_segment.from_x()) /
(line_segment.to_x() - line_segment.from_x())));
} else if outcode.contains(Outcode::TOP) {
point = vec2f(lerp(line_segment.from_x(),
line_segment.to_x(),
(line_segment.min_y() - line_segment.from_y()) /
(line_segment.max_y() - line_segment.min_y())),
(rect.min_y() - line_segment.from_y()) /
(line_segment.to_y() - line_segment.from_y())),
rect.min_y());
} else if outcode.contains(Outcode::BOTTOM) {
point = vec2f(lerp(line_segment.from_x(),
line_segment.to_x(),
(line_segment.max_y() - line_segment.from_y()) /
(line_segment.max_y() - line_segment.min_y())),
(rect.max_y() - line_segment.from_y()) /
(line_segment.to_y() - line_segment.from_y())),
rect.max_y());
}