primitiveview.cpp

C:Documents and SettingsAdministrator桌面VC++多媒体特效制作百例CHAR08Primitive

	}
    } else {
	glIndexi(index);
    }
}

void CPrimitiveView::Viewport(GLint row, GLint column)
{
    GLint x, y;

    boxW = (windW - (COLS + 1) * GAP) / COLS;
    boxH = (windH - (ROWS + 1) * GAP) / ROWS;

    x = GAP + column * (boxW + GAP);
    y = GAP + row * (boxH + GAP);

    glViewport(x, y, boxW, boxH);

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glOrtho(-boxW/2, boxW/2, -boxH/2, boxH/2, 0.0, 1.0);
    glMatrixMode(GL_MODELVIEW);

    glEnable(GL_SCISSOR_TEST);
    glScissor(x, y, boxW, boxH);
}

void CPrimitiveView::Point(void)
{
    GLint i;

    glBegin(GL_POINTS);
	for (i = 1; i < 8; i++) {
	    GLint j = i * 2;
	    SetColor(i);
	    glVertex2i(-j, -j);
	    glVertex2i(-j, 0);
	    glVertex2i(-j, j);
	    glVertex2i(0, j);
	    glVertex2i(j, j);
	    glVertex2i(j, 0);
	    glVertex2i(j, -j);
	    glVertex2i(0, -j);
	}
    glEnd();
}

void CPrimitiveView::Lines(void)
{
    GLint i;

    glPushMatrix();

    glTranslatef(-12, 0, 0);
    for (i = 1; i < 8; i++) {
	SetColor(i);
	glBegin(GL_LINES);
	    glVertex2i(-boxW/4, -boxH/4);
	    glVertex2i(boxW/4, boxH/4);
	glEnd();
	glTranslatef(4, 0, 0);
    }

    glPopMatrix();

    (rgb) ? glColor3f(1.0, 1.0, 1.0) : glIndexi(7);
    glBegin(GL_LINES);
	glVertex2i(0, 0);
    glEnd();
}

void CPrimitiveView::LineStrip(void)
{

    glBegin(GL_LINE_STRIP);
	SetColor(1);
	glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(-boxH/4));
	SetColor(2);
	glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(boxH/4));
	SetColor(3);
	glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(boxH/4));
	SetColor(4);
	glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(-boxH/4));
    glEnd();

    (rgb) ? glColor3f(1.0, 1.0, 1.0) : glIndexi(7);
    glBegin(GL_LINE_STRIP);
	glVertex2i(0, 0);
    glEnd();
}

void CPrimitiveView::LineLoop(void)
{

    glBegin(GL_LINE_LOOP);
	SetColor(1);
	glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(-boxH/4));
	SetColor(2);
	glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(boxH/4));
	SetColor(3);
	glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(boxH/4));
	SetColor(4);
	glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(-boxH/4));
    glEnd();

    glEnable(GL_LOGIC_OP);
    glLogicOp(GL_XOR);

    glEnable(GL_BLEND);
    glBlendFunc(GL_ONE, GL_ONE);

    SetColor(5);
    glBegin(GL_LINE_LOOP);
	glVertex2f(PIXEL_CENTER(-boxW/8), PIXEL_CENTER(-boxH/8));
	glVertex2f(PIXEL_CENTER(-boxW/8), PIXEL_CENTER(boxH/8));
    glEnd();
    glBegin(GL_LINE_LOOP);
	glVertex2f(PIXEL_CENTER(-boxW/8), PIXEL_CENTER(boxH/8+5));
	glVertex2f(PIXEL_CENTER(boxW/8), PIXEL_CENTER(boxH/8+5));
    glEnd();
    glDisable(GL_LOGIC_OP);
    glDisable(GL_BLEND);

    SetColor(6);
    glBegin(GL_POINTS);
	glVertex2i(0, 0);
    glEnd();

    (rgb) ? glColor3f(1.0, 1.0, 1.0) : glIndexi(7);
    glBegin(GL_LINE_LOOP);
	glVertex2i(0, 0);
    glEnd();
}

void CPrimitiveView::Bitmap(void)
{

    glBegin(GL_LINES);
	SetColor(1);
	glVertex2i(-boxW/2, 0);
	glVertex2i(boxW/2, 0);
	glVertex2i(0, -boxH/2);
	glVertex2i(0, boxH/2);
	SetColor(2);
	glVertex2i(0, -3);
	glVertex2i(0, -3+OPENGL_HEIGHT);
	SetColor(3);
	glVertex2i(0, -3);
	glVertex2i(OPENGL_WIDTH, -3);
    glEnd();

    SetColor(4);

    glPixelStorei(GL_UNPACK_LSB_FIRST, GL_TRUE);
    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);

    glRasterPos2i(0, 0);
    glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, 0, 3, 0.0, 0.0, OpenGL_bits);
}

void CPrimitiveView::Triangles(void)
{

    glBegin(GL_TRIANGLES);
	SetColor(1);
	glVertex2i(-boxW/4, -boxH/4);
	SetColor(2);
	glVertex2i(-boxW/8, -boxH/16);
	SetColor(3);
	glVertex2i(boxW/8, -boxH/16);

	SetColor(4);
	glVertex2i(-boxW/4, boxH/4);
	SetColor(5);
	glVertex2i(-boxW/8, boxH/16);
	SetColor(6);
	glVertex2i(boxW/8, boxH/16);
    glEnd();

    (rgb) ? glColor3f(1.0, 1.0, 1.0) : glIndexi(7);
    glBegin(GL_TRIANGLES);
	glVertex2i(0, 0);
	glVertex2i(-100, 100);
    glEnd();
}

void CPrimitiveView::TriangleStrip(void)
{

    glBegin(GL_TRIANGLE_STRIP);
	SetColor(1);
	glVertex2i(-boxW/4, -boxH/4);
	SetColor(2);
	glVertex2i(-boxW/4, boxH/4);
	SetColor(3);
	glVertex2i(0, -boxH/4);
	SetColor(4);
	glVertex2i(0, boxH/4);
	SetColor(5);
	glVertex2i(boxW/4, -boxH/4);
	SetColor(6);
	glVertex2i(boxW/4, boxH/4);
    glEnd();

    (rgb) ? glColor3f(1.0, 1.0, 1.0) : glIndexi(7);
    glBegin(GL_TRIANGLE_STRIP);
	glVertex2i(0, 0);
	glVertex2i(-100, 100);
    glEnd();
}

void CPrimitiveView::TriangleFan(void)
{
    GLint vx[8][2];
    GLint x0, y0, x1, y1, x2, y2, x3, y3;
    GLint i;

    y0 = -boxH/4;
    y1 = y0 + boxH/2/3;
    y2 = y1 + boxH/2/3;
    y3 = boxH/4;
    x0 = -boxW/4;
    x1 = x0 + boxW/2/3;
    x2 = x1 + boxW/2/3;
    x3 = boxW/4;

    vx[0][0] = x0; vx[0][1] = y1;
    vx[1][0] = x0; vx[1][1] = y2;
    vx[2][0] = x1; vx[2][1] = y3;
    vx[3][0] = x2; vx[3][1] = y3;
    vx[4][0] = x3; vx[4][1] = y2;
    vx[5][0] = x3; vx[5][1] = y1;
    vx[6][0] = x2; vx[6][1] = y0;
    vx[7][0] = x1; vx[7][1] = y0;

    glBegin(GL_TRIANGLE_FAN);
    SetColor(7);
	glVertex2i(0, 0);
	for (i = 0; i < 8; i++) {
	    SetColor(7-i);
	    glVertex2iv(vx[i]);
	}
    glEnd();

    (rgb) ? glColor3f(1.0, 1.0, 1.0) : glIndexi(7);
    glBegin(GL_TRIANGLE_FAN);
	glVertex2i(0, 0);
	glVertex2i(-100, 100);
    glEnd();
}

void CPrimitiveView::Rect(void)
{

    (rgb) ? glColor3f(1.0, 0.0, 1.0) : glIndexi(5);
    glRecti(-boxW/4, -boxH/4, boxW/4, boxH/4);
}

void CPrimitiveView::Polygons(void)
{
    GLint vx[8][2];
    GLint x0, y0, x1, y1, x2, y2, x3, y3;
    GLint i;

    y0 = -boxH/4;
    y1 = y0 + boxH/2/3;
    y2 = y1 + boxH/2/3;
    y3 = boxH/4;
    x0 = -boxW/4;
    x1 = x0 + boxW/2/3;
    x2 = x1 + boxW/2/3;
    x3 = boxW/4;

    vx[0][0] = x0; vx[0][1] = y1;
    vx[1][0] = x0; vx[1][1] = y2;
    vx[2][0] = x1; vx[2][1] = y3;
    vx[3][0] = x2; vx[3][1] = y3;
    vx[4][0] = x3; vx[4][1] = y2;
    vx[5][0] = x3; vx[5][1] = y1;
    vx[6][0] = x2; vx[6][1] = y0;
    vx[7][0] = x1; vx[7][1] = y0;

    glBegin(GL_POLYGON);
	for (i = 0; i < 8; i++) {
	    SetColor(7-i);
	    glVertex2iv(vx[i]);
	}
    glEnd();

    (rgb) ? glColor3f(1.0, 1.0, 1.0) : glIndexi(7);
    glBegin(GL_POLYGON);
	glVertex2i(0, 0);
	glVertex2i(100, 100);
    glEnd();
}

void CPrimitiveView::Quads(void)
{

    glBegin(GL_QUADS);
	SetColor(1);
	glVertex2i(-boxW/4, -boxH/4);
	SetColor(2);
	glVertex2i(-boxW/8, -boxH/16);
	SetColor(3);
	glVertex2i(boxW/8, -boxH/16);
	SetColor(4);
	glVertex2i(boxW/4, -boxH/4);

	SetColor(5);
	glVertex2i(-boxW/4, boxH/4);
	SetColor(6);
	glVertex2i(-boxW/8, boxH/16);
	SetColor(7);
	glVertex2i(boxW/8, boxH/16);
	SetColor(0);
	glVertex2i(boxW/4, boxH/4);
    glEnd();

    (rgb) ? glColor3f(1.0, 1.0, 1.0) : glIndexi(7);
    glBegin(GL_QUADS);
	glVertex2i(0, 0);
	glVertex2i(100, 100);
	glVertex2i(-100, 100);
    glEnd();
}

void CPrimitiveView::QuadStrip(void)
{

    glBegin(GL_QUAD_STRIP);
	SetColor(1);
	glVertex2i(-boxW/4, -boxH/4);
	SetColor(2);
	glVertex2i(-boxW/4, boxH/4);
	SetColor(3);
	glVertex2i(0, -boxH/4);
	SetColor(4);
	glVertex2i(0, boxH/4);
	SetColor(5);
	glVertex2i(boxW/4, -boxH/4);
	SetColor(6);
	glVertex2i(boxW/4, boxH/4);
    glEnd();

    (rgb) ? glColor3f(1.0, 1.0, 1.0) : glIndexi(7);
    glBegin(GL_QUAD_STRIP);
	glVertex2i(0, 0);
	glVertex2i(100, 100);
	glVertex2i(-100, 100);
    glEnd();
}
//add up