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在main.cpp中完成opencv图标的绘制 #26

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在main.cpp中完成opencv图标的绘制 #26

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74 changes: 47 additions & 27 deletions src/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -9,34 +9,54 @@

static void render() {
glBegin(GL_TRIANGLES);
glColor3f(1.0f, 0.0f, 0.0f);
glVertex3f(0.0f, 0.5f, 0.0f);
glColor3f(0.0f, 1.0f, 0.0f);
glVertex3f(-0.5f, -0.5f, 0.0f);
glColor3f(0.0f, 0.0f, 1.0f);
glVertex3f(0.5f, -0.5f, 0.0f);
constexpr int n = 1000;
constexpr float pi = 3.1415926535897f;
float radius = 0.3f;
float inner_radius = 0.15f;
float top_x = 0.0f;
float top_y = 1.0f / sqrt(3.0f);
float left_x = 0.5f;
float left_y = -0.5f * top_y;
float right_x = -left_x;
float right_y = left_y;

for (int i = 0; i < 5 * n / 6; i++) {
float angle1 = i / (float)n * pi * 2 - pi / 3;
float angle1_next = (i + 1) / (float)n * pi * 2 - pi / 3;
glColor3f(1.0f, 0.0f, 0.0f);
glVertex3f(top_x + radius * cosf(angle1), top_y + radius * sinf(angle1), 0.0f);
glVertex3f(top_x + radius * cosf(angle1_next), top_y + radius * sinf(angle1_next), 0.0f);
glVertex3f(top_x + inner_radius * cosf(angle1), top_y + inner_radius * sinf(angle1), 0.0f);
glColor3f(1.0f, 0.0f, 0.0f);
glVertex3f(top_x + inner_radius * cosf(angle1_next), top_y + inner_radius * sinf(angle1_next), 0.0f);
glVertex3f(top_x + radius * cosf(angle1_next), top_y + radius * sinf(angle1_next), 0.0f);
glVertex3f(top_x + inner_radius * cosf(angle1), top_y + inner_radius * sinf(angle1), 0.0f);

float angle2 = i / (float)n * pi * 2 + pi / 3;
float angle2_next = (i + 1) / (float)n * pi * 2 + pi / 3;
glColor3f(0.0f, 1.0f, 0.0f);
glVertex3f(right_x + radius * cosf(angle2), right_y + radius * sinf(angle2), 0.0f);
glVertex3f(right_x + radius * cosf(angle2_next), right_y + radius * sinf(angle2_next), 0.0f);
glVertex3f(right_x + inner_radius * cosf(angle2), right_y + inner_radius * sinf(angle2), 0.0f);
glColor3f(0.0f, 1.0f, 0.0f);
glVertex3f(right_x + inner_radius * cosf(angle2_next), right_y + inner_radius * sinf(angle2_next), 0.0f);
glVertex3f(right_x + radius * cosf(angle2_next), right_y + radius * sinf(angle2_next), 0.0f);
glVertex3f(right_x + inner_radius * cosf(angle2), right_y + inner_radius * sinf(angle2), 0.0f);

float angle3 = i / (float)n * pi * 2 + 2 * pi / 3;
float angle3_next = (i + 1) / (float)n * pi * 2 + 2 * pi / 3;
glColor3f(0.0f, 0.0f, 1.0f);
glVertex3f(left_x + radius * cosf(angle3), left_y + radius * sinf(angle3), 0.0f);
glVertex3f(left_x + radius * cosf(angle3_next), left_y + radius * sinf(angle3_next), 0.0f);
glVertex3f(left_x + inner_radius * cosf(angle3), left_y + inner_radius * sinf(angle3), 0.0f);
glColor3f(0.0f, 0.0f, 1.0f);
glVertex3f(left_x + inner_radius * cosf(angle3_next), left_y + inner_radius * sinf(angle3_next), 0.0f);
glVertex3f(left_x + radius * cosf(angle3_next), left_y + radius * sinf(angle3_next), 0.0f);
glVertex3f(left_x + inner_radius * cosf(angle3), left_y + inner_radius * sinf(angle3), 0.0f);

}
CHECK_GL(glEnd());
/* glBegin(GL_TRIANGLES); */
/* constexpr int n = 100; */
/* constexpr float pi = 3.1415926535897f; */
/* float radius = 0.5f; */
/* float inner_radius = 0.25f; */
/* static int x = 0; */
/* x++; */
/* if (x > n) */
/* x -= n; */
/* for (int i = 0; i < x; i++) { */
/* float angle = i / (float)n * pi * 2; */
/* float angle_next = (i + 1) / (float)n * pi * 2; */
/* glVertex3f(0.0f, 0.0f, 0.0f); */
/* glVertex3f(radius * sinf(angle), radius * cosf(angle), 0.0f); */
/* glVertex3f(radius * sinf(angle_next), radius * cosf(angle_next), 0.0f); */
/* glVertex3f(inner_radius * sinf(angle), inner_radius * cosf(angle), 0.0f); */
/* glVertex3f(inner_radius * sinf(angle_next), inner_radius * cosf(angle_next), 0.0f); */
/* glVertex3f(inner_radius * sinf(angle), inner_radius * cosf(angle), 0.0f); */
/* glVertex3f(radius * sinf(angle_next), radius * cosf(angle_next), 0.0f); */
/* } */
/* CHECK_GL(glEnd()); */

}

int main() {
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