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REMOVED: rlPushMatrix()/rlPopMatrix() from rshapes

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This simplification will allow the usage of `rshapes` as STANDALONE mode in a future. Only a small set of `rlgl` functions are required and they can be "more" easely replaced if no `rlPushMatrix()`/`rlPopMatrix()` are involved.

More simplification planned for the future, maybe the textures dependencies.
This commit is contained in:
Ray
2022-09-05 18:23:25 +02:00
parent 9996e328cb
commit e59442bfab
2 changed files with 83 additions and 95 deletions
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11
examples/shapes/shapes_basic_shapes.c
View File

@@ -2,7 +2,7 @@
* *
* raylib [shapes] example - Draw basic shapes 2d (rectangle, circle, line...) * raylib [shapes] example - Draw basic shapes 2d (rectangle, circle, line...)
* *
* Example originally created with raylib 1.0, last time updated with raylib 4.0 * Example originally created with raylib 1.0, last time updated with raylib 4.2
* *
* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified, * Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
* BSD-like license that allows static linking with closed source software * BSD-like license that allows static linking with closed source software
@@ -25,6 +25,8 @@ int main(void)
InitWindow(screenWidth, screenHeight, "raylib [shapes] example - basic shapes drawing"); InitWindow(screenWidth, screenHeight, "raylib [shapes] example - basic shapes drawing");
float rotation = 0.0f;
SetTargetFPS(60); // Set our game to run at 60 frames-per-second SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//-------------------------------------------------------------------------------------- //--------------------------------------------------------------------------------------
@@ -33,7 +35,7 @@ int main(void)
{ {
// Update // Update
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
// TODO: Update your variables here rotation += 0.2f;
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
// Draw // Draw
@@ -64,8 +66,9 @@ int main(void)
(Vector2){ screenWidth/4.0f*3.0f + 20.0f, 230.0f }, DARKBLUE); (Vector2){ screenWidth/4.0f*3.0f + 20.0f, 230.0f }, DARKBLUE);
// Polygon shapes and lines // Polygon shapes and lines
DrawPoly((Vector2){screenWidth/4.0f*3, 320}, 6, 80, 0, BROWN); DrawPoly((Vector2){ screenWidth/4.0f*3, 330 }, 6, 80, rotation, BROWN);
DrawPolyLinesEx((Vector2){screenWidth/4.0f*3, 320}, 6, 80, 0, 6, BEIGE); DrawPolyLines((Vector2){ screenWidth/4.0f*3, 330 }, 6, 90, rotation, BROWN);
DrawPolyLinesEx((Vector2){ screenWidth/4.0f*3, 330 }, 6, 85, rotation, 6, BEIGE);
// NOTE: We draw all LINES based shapes together to optimize internal drawing, // NOTE: We draw all LINES based shapes together to optimize internal drawing,
// this way, all LINES are rendered in a single draw pass // this way, all LINES are rendered in a single draw pass

59
src/rshapes.c
View File

@@ -1395,11 +1395,7 @@ void DrawTriangleStrip(Vector2 *points, int pointCount, Color color)
void DrawPoly(Vector2 center, int sides, float radius, float rotation, Color color) void DrawPoly(Vector2 center, int sides, float radius, float rotation, Color color)
{ {
if (sides < 3) sides = 3; if (sides < 3) sides = 3;
float centralAngle = 0.0f; float centralAngle = rotation;
rlPushMatrix();
rlTranslatef(center.x, center.y, 0.0f);
rlRotatef(rotation, 0.0f, 0.0f, 1.0f);
#if defined(SUPPORT_QUADS_DRAW_MODE) #if defined(SUPPORT_QUADS_DRAW_MODE)
rlSetTexture(texShapes.id); rlSetTexture(texShapes.id);
@@ -1410,17 +1406,17 @@ void DrawPoly(Vector2 center, int sides, float radius, float rotation, Color col
rlColor4ub(color.r, color.g, color.b, color.a); rlColor4ub(color.r, color.g, color.b, color.a);
rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height);
rlVertex2f(0, 0); rlVertex2f(center.x, center.y);
rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height);
rlVertex2f(sinf(DEG2RAD*centralAngle)*radius, cosf(DEG2RAD*centralAngle)*radius); rlVertex2f(center.x + sinf(DEG2RAD*centralAngle)*radius, center.y + cosf(DEG2RAD*centralAngle)*radius);
rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height);
rlVertex2f(sinf(DEG2RAD*centralAngle)*radius, cosf(DEG2RAD*centralAngle)*radius); rlVertex2f(center.x + sinf(DEG2RAD*centralAngle)*radius, center.y + cosf(DEG2RAD*centralAngle)*radius);
centralAngle += 360.0f/(float)sides; centralAngle += 360.0f/(float)sides;
rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height);
rlVertex2f(sinf(DEG2RAD*centralAngle)*radius, cosf(DEG2RAD*centralAngle)*radius); rlVertex2f(center.x + sinf(DEG2RAD*centralAngle)*radius, center.y + cosf(DEG2RAD*centralAngle)*radius);
} }
rlEnd(); rlEnd();
rlSetTexture(0); rlSetTexture(0);
@@ -1430,51 +1426,41 @@ void DrawPoly(Vector2 center, int sides, float radius, float rotation, Color col
{ {
rlColor4ub(color.r, color.g, color.b, color.a); rlColor4ub(color.r, color.g, color.b, color.a);
rlVertex2f(0, 0); rlVertex2f(center.x, center.y);
rlVertex2f(sinf(DEG2RAD*centralAngle)*radius, cosf(DEG2RAD*centralAngle)*radius); rlVertex2f(center.x + sinf(DEG2RAD*centralAngle)*radius, center.y + cosf(DEG2RAD*centralAngle)*radius);
centralAngle += 360.0f/(float)sides; centralAngle += 360.0f/(float)sides;
rlVertex2f(sinf(DEG2RAD*centralAngle)*radius, cosf(DEG2RAD*centralAngle)*radius); rlVertex2f(center.x + sinf(DEG2RAD*centralAngle)*radius, center.y + cosf(DEG2RAD*centralAngle)*radius);
} }
rlEnd(); rlEnd();
#endif #endif
rlPopMatrix();
} }
// Draw a polygon outline of n sides // Draw a polygon outline of n sides
void DrawPolyLines(Vector2 center, int sides, float radius, float rotation, Color color) void DrawPolyLines(Vector2 center, int sides, float radius, float rotation, Color color)
{ {
if (sides < 3) sides = 3; if (sides < 3) sides = 3;
float centralAngle = 0.0f; float centralAngle = rotation;
rlPushMatrix();
rlTranslatef(center.x, center.y, 0.0f);
rlRotatef(rotation, 0.0f, 0.0f, 1.0f);
rlBegin(RL_LINES); rlBegin(RL_LINES);
for (int i = 0; i < sides; i++) for (int i = 0; i < sides; i++)
{ {
rlColor4ub(color.r, color.g, color.b, color.a); rlColor4ub(color.r, color.g, color.b, color.a);
rlVertex2f(sinf(DEG2RAD*centralAngle)*radius, cosf(DEG2RAD*centralAngle)*radius); rlVertex2f(center.x + sinf(DEG2RAD*centralAngle)*radius, center.y + cosf(DEG2RAD*centralAngle)*radius);
centralAngle += 360.0f/(float)sides; centralAngle += 360.0f/(float)sides;
rlVertex2f(sinf(DEG2RAD*centralAngle)*radius, cosf(DEG2RAD*centralAngle)*radius); rlVertex2f(center.x + sinf(DEG2RAD*centralAngle)*radius, center.y + cosf(DEG2RAD*centralAngle)*radius);
} }
rlEnd(); rlEnd();
rlPopMatrix();
} }
void DrawPolyLinesEx(Vector2 center, int sides, float radius, float rotation, float lineThick, Color color) void DrawPolyLinesEx(Vector2 center, int sides, float radius, float rotation, float lineThick, Color color)
{ {
if (sides < 3) sides = 3; if (sides < 3) sides = 3;
float centralAngle = 0.0f; float centralAngle = rotation;
float exteriorAngle = 360.0f/(float)sides; float exteriorAngle = 360.0f/(float)sides;
float innerRadius = radius - (lineThick*cosf(DEG2RAD*exteriorAngle/2.0f)); float innerRadius = radius - (lineThick*cosf(DEG2RAD*exteriorAngle/2.0f));
rlPushMatrix();
rlTranslatef(center.x, center.y, 0.0f);
rlRotatef(rotation, 0.0f, 0.0f, 1.0f);
#if defined(SUPPORT_QUADS_DRAW_MODE) #if defined(SUPPORT_QUADS_DRAW_MODE)
rlSetTexture(texShapes.id); rlSetTexture(texShapes.id);
@@ -1484,17 +1470,17 @@ void DrawPolyLinesEx(Vector2 center, int sides, float radius, float rotation, fl
rlColor4ub(color.r, color.g, color.b, color.a); rlColor4ub(color.r, color.g, color.b, color.a);
rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height);
rlVertex2f(sinf(DEG2RAD*centralAngle)*innerRadius, cosf(DEG2RAD*centralAngle)*innerRadius); rlVertex2f(center.x + sinf(DEG2RAD*centralAngle)*innerRadius, center.y + cosf(DEG2RAD*centralAngle)*innerRadius);
rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height);
rlVertex2f(sinf(DEG2RAD*centralAngle)*radius, cosf(DEG2RAD*centralAngle)*radius); rlVertex2f(center.x + sinf(DEG2RAD*centralAngle)*radius, center.y + cosf(DEG2RAD*centralAngle)*radius);
centralAngle += exteriorAngle; centralAngle += exteriorAngle;
rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height);
rlVertex2f(sinf(DEG2RAD*centralAngle)*radius, cosf(DEG2RAD*centralAngle)*radius); rlVertex2f(center.x + sinf(DEG2RAD*centralAngle)*radius, center.y + cosf(DEG2RAD*centralAngle)*radius);
rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height);
rlVertex2f(sinf(DEG2RAD*centralAngle)*innerRadius, cosf(DEG2RAD*centralAngle)*innerRadius); rlVertex2f(center.x + sinf(DEG2RAD*centralAngle)*innerRadius, center.y + cosf(DEG2RAD*centralAngle)*innerRadius);
} }
rlEnd(); rlEnd();
rlSetTexture(0); rlSetTexture(0);
@@ -1505,19 +1491,18 @@ void DrawPolyLinesEx(Vector2 center, int sides, float radius, float rotation, fl
rlColor4ub(color.r, color.g, color.b, color.a); rlColor4ub(color.r, color.g, color.b, color.a);
float nextAngle = centralAngle + exteriorAngle; float nextAngle = centralAngle + exteriorAngle;
rlVertex2f(sinf(DEG2RAD*centralAngle)*radius, cosf(DEG2RAD*centralAngle)*radius); rlVertex2f(center.x + sinf(DEG2RAD*centralAngle)*radius, center.y + cosf(DEG2RAD*centralAngle)*radius);
rlVertex2f(sinf(DEG2RAD*centralAngle)*innerRadius, cosf(DEG2RAD*centralAngle)*innerRadius); rlVertex2f(center.x + sinf(DEG2RAD*centralAngle)*innerRadius, center.y + cosf(DEG2RAD*centralAngle)*innerRadius);
rlVertex2f(sinf(DEG2RAD*nextAngle)*radius, cosf(DEG2RAD*nextAngle)*radius); rlVertex2f(center.x + sinf(DEG2RAD*nextAngle)*radius, center.y + cosf(DEG2RAD*nextAngle)*radius);
rlVertex2f(sinf(DEG2RAD*centralAngle)*innerRadius, cosf(DEG2RAD*centralAngle)*innerRadius); rlVertex2f(center.x + sinf(DEG2RAD*centralAngle)*innerRadius, center.y + cosf(DEG2RAD*centralAngle)*innerRadius);
rlVertex2f(sinf(DEG2RAD*nextAngle)*radius, cosf(DEG2RAD*nextAngle)*radius); rlVertex2f(center.x + sinf(DEG2RAD*nextAngle)*radius, center.y + cosf(DEG2RAD*nextAngle)*radius);
rlVertex2f(sinf(DEG2RAD*nextAngle)*innerRadius, cosf(DEG2RAD*nextAngle)*innerRadius); rlVertex2f(center.x + sinf(DEG2RAD*nextAngle)*innerRadius, center.y + cosf(DEG2RAD*nextAngle)*innerRadius);
centralAngle = nextAngle; centralAngle = nextAngle;
} }
rlEnd(); rlEnd();
#endif #endif
rlPopMatrix();
} }
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------