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Fixed DrawLineEx

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Corrected the issue https://github.com/raysan5/raylib/issues/1596
This commit is contained in:
Paul Jurczak 2021-02-19 15:06:20 -07:00 committed by GitHub
parent d96b422809
commit 27d325e5c9
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 9 additions and 37 deletions
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46
src/shapes.c
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@ -116,45 +116,17 @@ void DrawLineV(Vector2 startPos, Vector2 endPos, Color color)
// Draw a line defining thickness
void DrawLineEx(Vector2 startPos, Vector2 endPos, float thick, Color color)
{
if (startPos.x > endPos.x)
Vector2 delta = Vector2Subtract(endPos, startPos);
float length = Vector2Length(delta);
if (length > 0 && thick > 0)
{
Vector2 tempPos = startPos;
startPos = endPos;
endPos = tempPos;
float scale = thick/(2*length);
Vector2 radius = {-scale*delta.y, scale*delta.x};
Vector2 strip[] = {Vector2Subtract(startPos, radius), Vector2Add(startPos, radius), Vector2Subtract(endPos, radius), Vector2Add(endPos, radius)};
DrawTriangleStrip(strip, 4, color);
}
float dx = endPos.x - startPos.x;
float dy = endPos.y - startPos.y;
float d = sqrtf(dx*dx + dy*dy);
float angle = asinf(dy/d);
rlEnableTexture(GetShapesTexture().id);
rlPushMatrix();
rlTranslatef((float)startPos.x, (float)startPos.y, 0.0f);
rlRotatef(RAD2DEG*angle, 0.0f, 0.0f, 1.0f);
rlTranslatef(0, (thick > 1.0f)? -thick/2.0f : -1.0f, 0.0f);
rlBegin(RL_QUADS);
rlColor4ub(color.r, color.g, color.b, color.a);
rlNormal3f(0.0f, 0.0f, 1.0f);
rlTexCoord2f(GetShapesTextureRec().x/GetShapesTexture().width, GetShapesTextureRec().y/GetShapesTexture().height);
rlVertex2f(0.0f, 0.0f);
rlTexCoord2f(GetShapesTextureRec().x/GetShapesTexture().width, (GetShapesTextureRec().y + GetShapesTextureRec().height)/GetShapesTexture().height);
rlVertex2f(0.0f, thick);
rlTexCoord2f((GetShapesTextureRec().x + GetShapesTextureRec().width)/GetShapesTexture().width, (GetShapesTextureRec().y + GetShapesTextureRec().height)/GetShapesTexture().height);
rlVertex2f(d, thick);
rlTexCoord2f((GetShapesTextureRec().x + GetShapesTextureRec().width)/GetShapesTexture().width, GetShapesTextureRec().y/GetShapesTexture().height);
rlVertex2f(d, 0.0f);
rlEnd();
rlPopMatrix();
rlDisableTexture();
}
// Draw line using cubic-bezier curves in-out