Example of using "Canvas" form "Graphics" library to display 3D graphics.
Dependencies: BSP_DISCO_F746NG Graphics mbed
Models/Sphere.cpp@3:aca7fe2d44b3, 2016-11-11 (annotated)
- Committer:
- karpent
- Date:
- Fri Nov 11 17:06:53 2016 +0000
- Revision:
- 3:aca7fe2d44b3
- Parent:
- 2:ef3093a7a43e
New 3d models added
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
karpent | 1:4a5e329e617b | 1 | // |
karpent | 1:4a5e329e617b | 2 | // Sphere.cpp - example of usage graphics commands to create 3D graphics. |
karpent | 1:4a5e329e617b | 3 | // |
karpent | 1:4a5e329e617b | 4 | // This example is based on code written by |
karpent | 1:4a5e329e617b | 5 | // Fabio de Albuquerque Dela Antonio (fabio914 at gmail.com) |
karpent | 1:4a5e329e617b | 6 | // See : https://github.com/fabio914/arduinogl/blob/master/examples |
karpent | 1:4a5e329e617b | 7 | // |
karpent | 1:4a5e329e617b | 8 | |
karpent | 1:4a5e329e617b | 9 | #include "Sphere.h" |
karpent | 1:4a5e329e617b | 10 | |
karpent | 1:4a5e329e617b | 11 | // Constructor |
karpent | 2:ef3093a7a43e | 12 | Sphere::Sphere(Display * display) : Model() |
karpent | 1:4a5e329e617b | 13 | { |
karpent | 1:4a5e329e617b | 14 | glUseCanvas(display); |
karpent | 1:4a5e329e617b | 15 | |
karpent | 1:4a5e329e617b | 16 | _perspectiveAspect = display->DisplayWidth() / display->DisplayHeight(); |
karpent | 1:4a5e329e617b | 17 | } |
karpent | 1:4a5e329e617b | 18 | |
karpent | 1:4a5e329e617b | 19 | |
karpent | 1:4a5e329e617b | 20 | void Sphere::Setup() |
karpent | 1:4a5e329e617b | 21 | { |
karpent | 2:ef3093a7a43e | 22 | // Make the model a little bigger |
karpent | 2:ef3093a7a43e | 23 | SetFixedScaleMode(3.1f); |
karpent | 2:ef3093a7a43e | 24 | |
karpent | 1:4a5e329e617b | 25 | glClear(GL_COLOR_BUFFER_BIT); |
karpent | 1:4a5e329e617b | 26 | glPointSize(4); |
karpent | 1:4a5e329e617b | 27 | |
karpent | 1:4a5e329e617b | 28 | glMatrixMode(GL_PROJECTION); |
karpent | 1:4a5e329e617b | 29 | glLoadIdentity(); |
karpent | 1:4a5e329e617b | 30 | |
karpent | 1:4a5e329e617b | 31 | gluPerspective(30.0, _perspectiveAspect, 0.1f, 9999.f); |
karpent | 1:4a5e329e617b | 32 | |
karpent | 1:4a5e329e617b | 33 | glMatrixMode(GL_MODELVIEW); |
karpent | 1:4a5e329e617b | 34 | } |
karpent | 1:4a5e329e617b | 35 | |
karpent | 1:4a5e329e617b | 36 | |
karpent | 1:4a5e329e617b | 37 | void Sphere::Render() |
karpent | 1:4a5e329e617b | 38 | { |
karpent | 2:ef3093a7a43e | 39 | float scale = GetScaleValue(); |
karpent | 1:4a5e329e617b | 40 | |
karpent | 1:4a5e329e617b | 41 | glLoadIdentity(); |
karpent | 1:4a5e329e617b | 42 | gluLookAt(10, 8, -10, 0, 0, 0, 0, 1, 0); |
karpent | 1:4a5e329e617b | 43 | |
karpent | 1:4a5e329e617b | 44 | glScalef(scale, scale, scale); |
karpent | 2:ef3093a7a43e | 45 | glRotatef(GetAngleValue(), 0.f, 1.f, 0.f); |
karpent | 1:4a5e329e617b | 46 | |
karpent | 1:4a5e329e617b | 47 | DrawModel(1.0, 10); |
karpent | 1:4a5e329e617b | 48 | } |
karpent | 1:4a5e329e617b | 49 | |
karpent | 1:4a5e329e617b | 50 | |
karpent | 1:4a5e329e617b | 51 | void Sphere::DrawModel(float radius, float p) |
karpent | 1:4a5e329e617b | 52 | { |
karpent | 1:4a5e329e617b | 53 | |
karpent | 1:4a5e329e617b | 54 | float theta1 = 0.f, theta2 = 0.f, theta3 = 0.f; |
karpent | 1:4a5e329e617b | 55 | float ex, ey, ez; |
karpent | 1:4a5e329e617b | 56 | |
karpent | 1:4a5e329e617b | 57 | for(int i = 0; i < p/2; i++) { |
karpent | 1:4a5e329e617b | 58 | |
karpent | 1:4a5e329e617b | 59 | theta1 = i * (M_PI * 2.0)/p - M_PI_2; |
karpent | 1:4a5e329e617b | 60 | theta2 = (i + 1) * (M_PI * 2.0)/p - M_PI_2; |
karpent | 1:4a5e329e617b | 61 | |
karpent | 1:4a5e329e617b | 62 | glBegin(GL_TRIANGLE_STRIP); |
karpent | 1:4a5e329e617b | 63 | for(int j = 0; j <= p; j++) { |
karpent | 1:4a5e329e617b | 64 | |
karpent | 1:4a5e329e617b | 65 | theta3 = j * (M_PI * 2.0)/p; |
karpent | 1:4a5e329e617b | 66 | ex = cosf(theta2) * cosf(theta3); |
karpent | 1:4a5e329e617b | 67 | ey = sinf(theta2); |
karpent | 1:4a5e329e617b | 68 | ez = cosf(theta2) * sinf(theta3); |
karpent | 1:4a5e329e617b | 69 | |
karpent | 1:4a5e329e617b | 70 | glVertex3f(radius * ex, radius * ey, radius * ez); |
karpent | 1:4a5e329e617b | 71 | |
karpent | 1:4a5e329e617b | 72 | ex = cosf(theta1) * cosf(theta3); |
karpent | 1:4a5e329e617b | 73 | ey = sinf(theta1); |
karpent | 1:4a5e329e617b | 74 | ez = cosf(theta1) * sinf(theta3); |
karpent | 1:4a5e329e617b | 75 | |
karpent | 1:4a5e329e617b | 76 | glVertex3f(radius * ex, radius * ey, radius * ez); |
karpent | 1:4a5e329e617b | 77 | } |
karpent | 1:4a5e329e617b | 78 | glEnd(); |
karpent | 1:4a5e329e617b | 79 | } |
karpent | 1:4a5e329e617b | 80 | } |