/*
* Draw a quad, using two triangles
*/
void S2D_DrawQuad(GLfloat x1, GLfloat y1,
GLfloat c1r, GLfloat c1g, GLfloat c1b, GLfloat c1a,
GLfloat x2, GLfloat y2,
GLfloat c2r, GLfloat c2g, GLfloat c2b, GLfloat c2a,
GLfloat x3, GLfloat y3,
GLfloat c3r, GLfloat c3g, GLfloat c3b, GLfloat c3a,
GLfloat x4, GLfloat y4,
GLfloat c4r, GLfloat c4g, GLfloat c4b, GLfloat c4a) {
S2D_GL_DrawTriangle(x1, y1, c1r, c1g, c1b, c1a,
x2, y2, c2r, c2g, c2b, c2a,
x3, y3, c3r, c3g, c3b, c3a);
S2D_GL_DrawTriangle(x3, y3, c3r, c3g, c3b, c3a,
x4, y4, c4r, c4g, c4b, c4a,
x1, y1, c1r, c1g, c1b, c1a);
};
/*
* Draw a quad, using two triangles
*/
void S2D_DrawQuad(GLfloat x1, GLfloat y1,
GLfloat r1, GLfloat g1, GLfloat b1, GLfloat a1,
GLfloat x2, GLfloat y2,
GLfloat r2, GLfloat g2, GLfloat b2, GLfloat a2,
GLfloat x3, GLfloat y3,
GLfloat r3, GLfloat g3, GLfloat b3, GLfloat a3,
GLfloat x4, GLfloat y4,
GLfloat r4, GLfloat g4, GLfloat b4, GLfloat a4) {
S2D_GL_DrawTriangle(x1, y1, r1, g1, b1, a1,
x2, y2, r2, g2, b2, a2,
x3, y3, r3, g3, b3, a3);
S2D_GL_DrawTriangle(x3, y3, r3, g3, b3, a3,
x4, y4, r4, g4, b4, a4,
x1, y1, r1, g1, b1, a1);
};
/*
* Draw a triangle
*/
void S2D_DrawTriangle(GLfloat x1, GLfloat y1,
GLfloat c1r, GLfloat c1g, GLfloat c1b, GLfloat c1a,
GLfloat x2, GLfloat y2,
GLfloat c2r, GLfloat c2g, GLfloat c2b, GLfloat c2a,
GLfloat x3, GLfloat y3,
GLfloat c3r, GLfloat c3g, GLfloat c3b, GLfloat c3a) {
S2D_GL_DrawTriangle(x1, y1, c1r, c1g, c1b, c1a,
x2, y2, c2r, c2g, c2b, c2a,
x3, y3, c3r, c3g, c3b, c3a);
}
/*
* Draw a triangle
*/
void S2D_DrawTriangle(GLfloat x1, GLfloat y1,
GLfloat r1, GLfloat g1, GLfloat b1, GLfloat a1,
GLfloat x2, GLfloat y2,
GLfloat r2, GLfloat g2, GLfloat b2, GLfloat a2,
GLfloat x3, GLfloat y3,
GLfloat r3, GLfloat g3, GLfloat b3, GLfloat a3) {
S2D_GL_DrawTriangle(x1, y1, r1, g1, b1, a1,
x2, y2, r2, g2, b2, a2,
x3, y3, r3, g3, b3, a3);
}
/*
* Draw a circle from triangles
*/
void S2D_DrawCircle(GLfloat x, GLfloat y, GLfloat radius, int sectors,
GLfloat r, GLfloat g, GLfloat b, GLfloat a) {
double angle = 2 * M_PI / sectors;
for (int i = 0; i < sectors; i++) {
GLfloat x1 = x + radius * cos(i * angle);
GLfloat y1 = y + radius * sin(i * angle);
GLfloat x2 = x + radius * cos((i - 1) * angle);
GLfloat y2 = y + radius * sin((i - 1) * angle);
S2D_GL_DrawTriangle( x, y, r, g, b, a,
x1, y1, r, g, b, a,
x2, y2, r, g, b, a);
}
}
