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ADDED: DrawTriangleStrip()

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Ray 2019-06-17 10:29:58 +02:00
parent f951f0c536
commit e0854696b4
2 changed files with 35 additions and 0 deletions
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1
src/raylib.h
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@ -1055,6 +1055,7 @@ RLAPI void DrawRectangleRoundedLines(Rectangle rec, float roundness, int segment
RLAPI void DrawTriangle(Vector2 v1, Vector2 v2, Vector2 v3, Color color); // Draw a color-filled triangle
RLAPI void DrawTriangleLines(Vector2 v1, Vector2 v2, Vector2 v3, Color color); // Draw triangle outline
RLAPI void DrawTriangleFan(Vector2 *points, int numPoints, Color color); // Draw a triangle fan defined by points
RLAPI void DrawTriangleStrip(Vector2 *points, int pointsCount, Color color); // Draw a triangle strip defined by points
RLAPI void DrawPoly(Vector2 center, int sides, float radius, float rotation, Color color); // Draw a regular polygon (Vector version)
RLAPI void SetShapesTexture(Texture2D texture, Rectangle source); // Define default texture used to draw shapes

34
src/shapes.c
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@ -1181,6 +1181,8 @@ void DrawRectangleRoundedLines(Rectangle rec, float roundness, int segments, int
// Draw a triangle
void DrawTriangle(Vector2 v1, Vector2 v2, Vector2 v3, Color color)
{
if (rlCheckBufferLimit(4)) rlglDraw();
#if defined(SUPPORT_QUADS_DRAW_MODE)
rlEnableTexture(GetShapesTexture().id);
@ -1214,6 +1216,8 @@ void DrawTriangle(Vector2 v1, Vector2 v2, Vector2 v3, Color color)
// Draw a triangle using lines
void DrawTriangleLines(Vector2 v1, Vector2 v2, Vector2 v3, Color color)
{
if (rlCheckBufferLimit(6)) rlglDraw();
rlBegin(RL_LINES);
rlColor4ub(color.r, color.g, color.b, color.a);
rlVertex2f(v1.x, v1.y);
@ -1258,6 +1262,36 @@ void DrawTriangleFan(Vector2 *points, int pointsCount, Color color)
}
}
// Draw a triangle strip defined by points
// NOTE: Every new point connects with previous two
void DrawTriangleStrip(Vector2 *points, int pointsCount, Color color)
{
if (pointsCount >= 3)
{
if (rlCheckBufferLimit(pointsCount)) rlglDraw();
rlBegin(RL_TRIANGLES);
rlColor4ub(color.r, color.g, color.b, color.a);
for (int i = 2; i < pointsCount; i++)
{
if ((i%2) == 0)
{
rlVertex2f(points[i].x, points[i].y);
rlVertex2f(points[i - 2].x, points[i - 2].y);
rlVertex2f(points[i - 1].x, points[i - 1].y);
}
else
{
rlVertex2f(points[i].x, points[i].y);
rlVertex2f(points[i - 1].x, points[i - 1].y);
rlVertex2f(points[i - 2].x, points[i - 2].y);
}
}
rlEnd();
}
}
// Draw a regular polygon of n sides (Vector version)
void DrawPoly(Vector2 center, int sides, float radius, float rotation, Color color)
{